CA1280902C - Percolator holding pan for espresso coffee making machines - Google Patents
Percolator holding pan for espresso coffee making machinesInfo
- Publication number
- CA1280902C CA1280902C CA000548928A CA548928A CA1280902C CA 1280902 C CA1280902 C CA 1280902C CA 000548928 A CA000548928 A CA 000548928A CA 548928 A CA548928 A CA 548928A CA 1280902 C CA1280902 C CA 1280902C
- Authority
- CA
- Canada
- Prior art keywords
- percolator
- holding pan
- membrane
- pan according
- coffee
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J31/00—Apparatus for making beverages
- A47J31/06—Filters or strainers for coffee or tea makers ; Holders therefor
- A47J31/0605—Filters or strainers for coffee or tea makers ; Holders therefor with a valve at the filter-outlet; Anti-drip devices
Abstract
A PERCOLATOR HOLDING PAN FOR
ESPRESSO COFFEE MAKING MACHINES
ABSTRACT OF THE DISCLOSURE
A percolator holding pan for "espresso" coffee making machines enabling delivery of a rich "espresso" coffee with a good flavor irrespective of the coffee powder conditions, such as its grinding grade, moisture content, and possibly the extent of its pressing, comprises a body adapted for fitting to a delivery assembly of an "espresso" coffee maker, a cavity formed in said body and-having a bottom, a cupped percolator for the coffee powder housed within said cavity , two "espresso" coffee dispensing spouts , a liquid path extending through said body between the cupped percolator and the spouts and including a compartment interposed to said cupped percolator and said bottom , as well as pressure control means provided in said path to control the pressure downstream of the cupped percolator.
ESPRESSO COFFEE MAKING MACHINES
ABSTRACT OF THE DISCLOSURE
A percolator holding pan for "espresso" coffee making machines enabling delivery of a rich "espresso" coffee with a good flavor irrespective of the coffee powder conditions, such as its grinding grade, moisture content, and possibly the extent of its pressing, comprises a body adapted for fitting to a delivery assembly of an "espresso" coffee maker, a cavity formed in said body and-having a bottom, a cupped percolator for the coffee powder housed within said cavity , two "espresso" coffee dispensing spouts , a liquid path extending through said body between the cupped percolator and the spouts and including a compartment interposed to said cupped percolator and said bottom , as well as pressure control means provided in said path to control the pressure downstream of the cupped percolator.
Description
3~3~
A PERCOLAT~R HOLDING PAN FOR
ESPRESS~ COFFEE MAKING MACHINES
This invention relates to a percolator holding pan for"espresso" coffee making machines, being of a type which comprises a body adapted for fitting to a delivery assembly of an "espresso"
coffee making machine; a cavity formed in said body and having a bottom; a cupped percolator intended for holding the coffee powder and housed within said cavity; at least one "espresso"
coffee dispensing spout; and a liquid flow path extending through said body between the cupped percolator and said at least one spout, and including a compartment provided at a locat;on between sa;d cupped percolator and sa;d bottom.
As is known, to prepare a good, r;ch "espresso" coffee, the del;very t;me -- i.e. the time required to complete the percolation process ~- and, hence, the flow rate, should be set at optimum values ensuring satisfactory results from the organolept;c standpo;nt.
Such values are directly dependent on the pressure of the water upstream of the coffee powder charge and the ground coffee size, since the coffee powder charge ;s bound to form a filter;ng element effect;ng upstream a pressure value wh;ch obv;ously reflect on the liquid coffee delivery rate.
It is a recognized fact that coarse grinding results in increased flow rate, and consequently shorter delivery time, whereas fine gr;nding leads to decreased flow rate, with longer delivery time as a consequence.
Note should be made that the flow rate value, for the same conditions of water pressure upstream of the filtering element formed by the coffee powder, is also tied to many other factors, such as the coffee variety being used, moisture ,, , ~
. ............... . . .
~ - . ,' ' : . .
~. .
3~'~
content, ageing of the powder, pressing the powder within the cupped percolator, and a number of contingent weather factors which can change upon occasion and usually make adjustment rather problematical.
It should be further noted that the coffee delivery time, and therefore the rate at which it will be dispensed downstream of the percolator, are substantial to the obtainment of a rich "espresso" coffee with a fine flavor. In fact, too low a flow rate is apt to yield an "espresso" coffee with a thin head or "cream", dark colored and tasting bitter, commonly referred to as "burned" coffee, whereas an excessively high flow rate yields an "espresso" coffee having a weakly flavored pale colored head which make the "espresso" coffee more akin to an ordinary coffee infusion.
The aforementioned settings have been quite difficult to make heretofore, and have largely relied on the operator's skill, the operator being each time forced to adjust the coffee grinding, pressing, and the like settings until an opt;mum result can be ob~ained.
The problem underly;ng this invention is to provide a percolator holding pan of the type specified above, which has such constructional and operational features as to overcome the aforementioned shortcoming~
This problem is solved by a percolator holding pan as indicated being characterized in that it comprises pressure control means placed in said path for controll;ng the pressure downstream of the cupped percolator.
Said pressure control means advantageously comprise a restrictor effective to produce a pilot backpressure, and a '. ~ .
., ,-. : : .
.
;
., ~ . .
~ 3~3~
shut-off valve located between the cupped percolator and the restrictor and being piloted by sa;d backpressure.
Further features and the advantages of the percolator holding pan according to this invention will become apparent from the following detailed description of a preferred embodiment thereof, to be taken by way of illustrat;on and not of limitation in conjunction with the accompanying drawings, where:
Figure 1 is a perspective view of a percolator holding pan according to the invention;
Figure 2 is a sectional view of the percoLator hoLding pan shown in Figure 1, taken along the line I-I;
Figure 3 is a detail view of the percolator hoLding pan shown in Figure 1, taken in the direction of the arrow III;
Figure 4 is a perspective view of a modified embodiment of the percoLator hoLd;ng pan according to the ;nvent;on; and Figure 5 is a sect;onaL v;ew of the percoLator hoLding pan shown in Figure 4, taken aLong the line VI-VI.
With reference to the drawing figures, a percolator holding pan according to the invention comprises a body 1 which is formed with a handle 2 and bayonet coupling eLements 3 for fitting to a deLivery assembLy of an "espresso" coffee maker.
The body 1 defines on its interior a cavity 4 adapted to accommodate a cupped percoLator 5 to be loaded with a charge of coffee powder and which ;s acted upon by a ring seal 8 provided in the side waLL of the cavity ~.
An underpan 10 having dispensing spouts 11 is connected to the bottom of the body 1.
The gist of the invention resides in that means of controlling the "espresso" coffee delivery pressuré are .
- :
provided at a port 20 which is ~ormed through the bottom of the cavity 4 and puts the cavity in communication with the dispensing spouts 11.
These control means consist of a needle 21 formed at the tip with a conical termination 22 acting on the port 20 so as to control its working cross-sectional area. The needle Z1 has, at a middle portion thereof, a ballasting body or weight 25 which is contained inside a compensation chamber, generally indicated at 26, which is defined between the bottom outside of the cavity and a deformable membrane 30 defining an outlet port 31, in a middle portion thereof, which ~lso functions as a lower guide member for the needle 21n The deformable membrane is urged upwards by a spring 32 arranged to act between the cited underpan 10 and a central bulge 34 defined by the membrane and which forms, in its corresponding inward portion, the actual area accommodating the weight 25~
At the inward portion of the cited bulge 34, there are provided spacers 35 which serve as rest members for the weight effective to prevent it from fully blocking the outlet port 31. The compensation chamber should have extremely small volume dimens;ons in order to avoid unnecessary stagnation sites. To prevent the deformable membrane 3C from st;cking to the outside bottom of the cavity defined by the body l, under the thrust of the spr;ng, slender ridges 36 are provided to hold the membrane off, thus affording small dimensions for the chamber. Further, such a minimized volume compensation chamber should have a pitched configuration toward the outlet hole in order to prevent formation of residues and stagnation s;tes for obvious sanitary considerations~
1.
. :
.
, ~ .: , ' .
.
sa3~
In addition, the spacers 35 will function as a stop -for the weight 25, preventing it from blocking the inlet port 20 to the compensation chamber 26.
It stands to reason that the ports 20 and outlet ports 31 should be cal;brated to control the flow with the utmost accuracy in order to prov;de the required del;very pressure on the occurrence o-f an eccessively high flow.
It has been found in the course of actual tests that, where a pump with a 10-15 atm capacity is used for the coffee maker, the optimum diameter dimension of the port is within the range of 1.5 mm to 2.5 mm, with an 0.8-1.5 mm needle; the output port will then have a diameter equal to or smaller than that of the port 20.
Particularly in the inoperative condition, the needle 10 will leave the port 20 uncovered while throttling down the calibrated outlet port 31 defined in the membrane 30 with its calibrated stem.
The presence of the needle inside the two calibrated holes forming the port 20 and outLet port 31 affords self-cleaning of the two holes, in a s;mple manner upon loading and shaking out the coffee grounds, thereby ensuring perfect dimensional stability of the holes, and hence, correct performance over time.
To make an "espresso" coffee, water is admitted under pressure through the filter formed by the coffee powder, thereby 3 flow path of coffee percolate is formed leading ;nto the compensation chamber through the hole 20. Should the flow prove excessive, i.e. the coffee be delivered with;n too short a time, the outlet hole 31, which is throttled down .
. .................... . . .
- . . :.
. . . .
by the needle at the bottom of the compensation chamber, practically creates then a dinamic barrier effective to trigger a backpressure within said chamber which causes the membrane to become deformed by pushing it downwards against the bias of the spring 32.
The weight 25, allowed to rest on the membrane and rigid with the needle, will move down in consequence such that its conical tip 22 tends to cover the inlet port and throttle the flow further down, thus reducing the flow rate until a desired flow rate is achieved.
Thus, the percolator holding pan affords control over the flow pressure in a virtually automatic manner becaus-e of the pressure established downstream of the cupped percolator on closing the port in the event that the fLow of coffee proves to be too fast.
It should be added to the foregoing that a safety valve may be provided to reLieve the pressure in the event that, for a reason whatever, excessively high internal pressures are created.
Furthermore, provided in the bottom of the underpan 10 are drain holes 40 effective to prevent the formation of stagnant pockets of any kind.
W;th reference to F;gures 4 and 5, a percolator holding pan 51 according to the ;nvention comprises an aluminum body 52 having a handle 53 and bayonet coupling elements 54 for fitting to a delivery assembly of an "espresso" coffee maker.
In the body 1, there is formed a cavity 55 having a bottom 56.
The cavity 55 accommodates a cupped percolator 57 for the ' ' . ' '.. ..
- :
.
c~
.
coffee powder, which defines in said cavity 55 a compartment 58 formed between the cupped percolator and the bottom 55.
~ wo "espresso" coffee dispensing spouts, both ;ndicated at 59, are prov;ded on the body 52 at the bottom 56, thereby forming through said body 52 a liquid path, designated 60, which extends between the cupped percolator 57 and the spouts 59 and including said compartment 58~
The percolator holding pan 51 of this invention includes pressure control means 61 located in the path 60 for controlling the pressure downstream of the cupped percolator 57.
These pressure control means 61 comprise a restrictor 62, effective to produce a pilot backpressure, and a shut-off valve 63, interposed to the cupped percolator 57 and the restrictor 62 and being piloted by said backpressure.
The restrictor 62 has a calibrated port 64 formed through an elastically cleformable membrane 65 lying in the compartment 58. More specifically, the calibrated port 64 is formed in a nozzle 66 of a non-sticking material removably push-fitted in the membrane 65 at a bulge 67 thereof.
The periphery of the membrane 65 is configured as a toric ring 87 whereby it is held in the body 52. To this end, the body 52 is formed in two juxtaposed parts 88 and 89, held together by screw fasteners and defining a seat 9û ~or said toric ring. The membrane will deform relatively to the toric ring, generating neither friction nor jerks.
` The shut-off valve 63 includes a shutter seat 6~, formed in a partition 69 provided in said compartment 58 between the cupped percolator 57 and the membrane 56r and a shutter 70, which is arranged to contact the membrane 65 and is movable toward ." , : .
`
~ 3~
and away from said shutter seat 68 by the action of said membrane.
Formed between the part;tion 69 and the membrane 65 is a chamber 71 wherein said backpressure prevails and whose volume will change as the backpressure varies according to the extent by which the membrane is deformed~
It should be noted that a spring 72 is mounted between the membrane 65 and the bottom 56 to constantly bias the membrane 65 toward the partition 69.
Indicated at 73 are ra;sed splines formed on the partition 69, which prov;de spacers effective to prevent thé membrane 65 from resting across the entire surface of the partition 69 with the volume of the chamber 71 at a minimum, thereby preventing the membrane from sticking to the partition.
In particular, the shutter seat 68 would be formed preferably w;th;n an ;nsert 74 of a non-st;ck;ng and non-rust;ng material, force fitted ;nto sa;d part;tion.
The shutter 70 comprises a needle 75 received through the shutter seat 68 and hav;ng a frustocon;cal tip 76 mating w;th the shutter seat 68 to control the shutter passage cross-sect;on.
The shutter 70 further comprises an enlargement 77, formed along the needle 75, which is seated ;n a seat 78 formed ;n the bulge 77. The enlargement 77 prov;des we;ght to hold the shutter 68 ;n contact with the membrane 65.
This contact ;s effected by engagement of the enlargement 77 w;th ridges 79 formed on the membrane.
From the path 60, at a locat;on directly downstream of the ; cupped percolator 57 and upstream of the pressure control meAns 61, there b-an h-s ff a ~nduit 80, formed i- the brdy - ; - ' ' , ' .
: , . . . : .
- - - - . . :
. , . , :
- . , 52 and being open to the outside, in which a safety valve 81 is mounted.
The percolator holding pan 51 includes a plug 82, push fitted removably at the bottom 56, the spouts 59 being formed on said plug 82.
The plug 82 has a tubular portion 83 jutting into the compartment 58. The tubular portion 83 forms inwardly a collecting well 84, upstream of the spouts, and defines outwardly an annular groove 85 for receiving and centering one end of the spr;ng 72, the other spring end being fitted over the bulge 68.
Said annular groove 85 is provided with drain holes 86 to prevent stagnation within the groove itself.
The diameter of the plug 82 should be selected for convenient access to the nozzle 66, removal and re-assembling thereof.
The spouts 59 have their ends cut obl;quely, to a so-called flute mouthpiece configuration, with d;verging tips to hold the flows of "espresso" coffee issuing from the spouts well apart.
During the delivery of the "espresso" coffee, and for any grinding grade of the coffee powder or pressing thereof or the like, it has been found that delivery proceeds at nearly constant flow rate. This is owed to higher or lower flow rates than opt;mum immed;ately generat;ng, ;n passing the restr;ctor 62, higher or lower backpressures, respect;vely, ;n the chamber 71, and accord;ngly, a larger or smaller d;splacement of the membrane 65 away from the part;t;on~ Th;s results ;n the shutter be;ng brought more or less close to the shutter sea~. Ihe n~t esul~ is an increase or decrease of the pressur~
" ` ' ' ' `:
' ~ ~.
' .
9~
.
downstream of the cupped percolator which will prevail until the flow rate settles at the desired optimum value.
The main advantage of the percolator holding pan according to the ;nvent;on resides in that it adjusts the flow rate of the del;vered stream in an automatic manner, irrespective of the nature and state of the coffee powder being used, thus contributing toward optimum utilization of the coFfee powder.
In other words, the use of the percolator holding pan according to the invention yields "espresso" coffee of excellent quality, without requiring apDlication of any special sk1ll or reiterated attempts at perfecting the coffee powder pressing operation as dictated each time by the coffee powder actually employed.
The percolator holding pan of this invention is also advantageous from the sanitary standpoint. In fact, all the "espresso" coffee will readily flow out of the percolator holding pan at each delivery. In all cases~ it has proved easy and quick to clean out.
The holding pan of this invention is also advantageous from the standpoint of safety in use.
An additional advantage of the inventive percolator holding pan is that its construction is simple and reliable, thereby affording fla~less operation either -Following a number of successive deliveries or prolonged off cycles.
Lastly, it lends itself for use in lieu of a conventional one, to retrofit any "espresso" coffee maker whether of a professional or household type.
Understandably, several modifications and alterations may be applied to the percolator holding pans disclosed hereinabove, : ` ~- ' ' ' ' :
' " ' '- ' '. ' ' ' ' ' :' ' ,' .
~8~3U~
to meet specific contingent requirernents, w;thout depart;ng f rom the protect;on scope of the invention as set forth in the appended c la i ms .
~ .
~ :
, . .
,: . : .
.. .. .
. .
.
- . .
: . ., ,: ' ~ .
A PERCOLAT~R HOLDING PAN FOR
ESPRESS~ COFFEE MAKING MACHINES
This invention relates to a percolator holding pan for"espresso" coffee making machines, being of a type which comprises a body adapted for fitting to a delivery assembly of an "espresso"
coffee making machine; a cavity formed in said body and having a bottom; a cupped percolator intended for holding the coffee powder and housed within said cavity; at least one "espresso"
coffee dispensing spout; and a liquid flow path extending through said body between the cupped percolator and said at least one spout, and including a compartment provided at a locat;on between sa;d cupped percolator and sa;d bottom.
As is known, to prepare a good, r;ch "espresso" coffee, the del;very t;me -- i.e. the time required to complete the percolation process ~- and, hence, the flow rate, should be set at optimum values ensuring satisfactory results from the organolept;c standpo;nt.
Such values are directly dependent on the pressure of the water upstream of the coffee powder charge and the ground coffee size, since the coffee powder charge ;s bound to form a filter;ng element effect;ng upstream a pressure value wh;ch obv;ously reflect on the liquid coffee delivery rate.
It is a recognized fact that coarse grinding results in increased flow rate, and consequently shorter delivery time, whereas fine gr;nding leads to decreased flow rate, with longer delivery time as a consequence.
Note should be made that the flow rate value, for the same conditions of water pressure upstream of the filtering element formed by the coffee powder, is also tied to many other factors, such as the coffee variety being used, moisture ,, , ~
. ............... . . .
~ - . ,' ' : . .
~. .
3~'~
content, ageing of the powder, pressing the powder within the cupped percolator, and a number of contingent weather factors which can change upon occasion and usually make adjustment rather problematical.
It should be further noted that the coffee delivery time, and therefore the rate at which it will be dispensed downstream of the percolator, are substantial to the obtainment of a rich "espresso" coffee with a fine flavor. In fact, too low a flow rate is apt to yield an "espresso" coffee with a thin head or "cream", dark colored and tasting bitter, commonly referred to as "burned" coffee, whereas an excessively high flow rate yields an "espresso" coffee having a weakly flavored pale colored head which make the "espresso" coffee more akin to an ordinary coffee infusion.
The aforementioned settings have been quite difficult to make heretofore, and have largely relied on the operator's skill, the operator being each time forced to adjust the coffee grinding, pressing, and the like settings until an opt;mum result can be ob~ained.
The problem underly;ng this invention is to provide a percolator holding pan of the type specified above, which has such constructional and operational features as to overcome the aforementioned shortcoming~
This problem is solved by a percolator holding pan as indicated being characterized in that it comprises pressure control means placed in said path for controll;ng the pressure downstream of the cupped percolator.
Said pressure control means advantageously comprise a restrictor effective to produce a pilot backpressure, and a '. ~ .
., ,-. : : .
.
;
., ~ . .
~ 3~3~
shut-off valve located between the cupped percolator and the restrictor and being piloted by sa;d backpressure.
Further features and the advantages of the percolator holding pan according to this invention will become apparent from the following detailed description of a preferred embodiment thereof, to be taken by way of illustrat;on and not of limitation in conjunction with the accompanying drawings, where:
Figure 1 is a perspective view of a percolator holding pan according to the invention;
Figure 2 is a sectional view of the percoLator hoLding pan shown in Figure 1, taken along the line I-I;
Figure 3 is a detail view of the percolator hoLding pan shown in Figure 1, taken in the direction of the arrow III;
Figure 4 is a perspective view of a modified embodiment of the percoLator hoLd;ng pan according to the ;nvent;on; and Figure 5 is a sect;onaL v;ew of the percoLator hoLding pan shown in Figure 4, taken aLong the line VI-VI.
With reference to the drawing figures, a percolator holding pan according to the invention comprises a body 1 which is formed with a handle 2 and bayonet coupling eLements 3 for fitting to a deLivery assembLy of an "espresso" coffee maker.
The body 1 defines on its interior a cavity 4 adapted to accommodate a cupped percoLator 5 to be loaded with a charge of coffee powder and which ;s acted upon by a ring seal 8 provided in the side waLL of the cavity ~.
An underpan 10 having dispensing spouts 11 is connected to the bottom of the body 1.
The gist of the invention resides in that means of controlling the "espresso" coffee delivery pressuré are .
- :
provided at a port 20 which is ~ormed through the bottom of the cavity 4 and puts the cavity in communication with the dispensing spouts 11.
These control means consist of a needle 21 formed at the tip with a conical termination 22 acting on the port 20 so as to control its working cross-sectional area. The needle Z1 has, at a middle portion thereof, a ballasting body or weight 25 which is contained inside a compensation chamber, generally indicated at 26, which is defined between the bottom outside of the cavity and a deformable membrane 30 defining an outlet port 31, in a middle portion thereof, which ~lso functions as a lower guide member for the needle 21n The deformable membrane is urged upwards by a spring 32 arranged to act between the cited underpan 10 and a central bulge 34 defined by the membrane and which forms, in its corresponding inward portion, the actual area accommodating the weight 25~
At the inward portion of the cited bulge 34, there are provided spacers 35 which serve as rest members for the weight effective to prevent it from fully blocking the outlet port 31. The compensation chamber should have extremely small volume dimens;ons in order to avoid unnecessary stagnation sites. To prevent the deformable membrane 3C from st;cking to the outside bottom of the cavity defined by the body l, under the thrust of the spr;ng, slender ridges 36 are provided to hold the membrane off, thus affording small dimensions for the chamber. Further, such a minimized volume compensation chamber should have a pitched configuration toward the outlet hole in order to prevent formation of residues and stagnation s;tes for obvious sanitary considerations~
1.
. :
.
, ~ .: , ' .
.
sa3~
In addition, the spacers 35 will function as a stop -for the weight 25, preventing it from blocking the inlet port 20 to the compensation chamber 26.
It stands to reason that the ports 20 and outlet ports 31 should be cal;brated to control the flow with the utmost accuracy in order to prov;de the required del;very pressure on the occurrence o-f an eccessively high flow.
It has been found in the course of actual tests that, where a pump with a 10-15 atm capacity is used for the coffee maker, the optimum diameter dimension of the port is within the range of 1.5 mm to 2.5 mm, with an 0.8-1.5 mm needle; the output port will then have a diameter equal to or smaller than that of the port 20.
Particularly in the inoperative condition, the needle 10 will leave the port 20 uncovered while throttling down the calibrated outlet port 31 defined in the membrane 30 with its calibrated stem.
The presence of the needle inside the two calibrated holes forming the port 20 and outLet port 31 affords self-cleaning of the two holes, in a s;mple manner upon loading and shaking out the coffee grounds, thereby ensuring perfect dimensional stability of the holes, and hence, correct performance over time.
To make an "espresso" coffee, water is admitted under pressure through the filter formed by the coffee powder, thereby 3 flow path of coffee percolate is formed leading ;nto the compensation chamber through the hole 20. Should the flow prove excessive, i.e. the coffee be delivered with;n too short a time, the outlet hole 31, which is throttled down .
. .................... . . .
- . . :.
. . . .
by the needle at the bottom of the compensation chamber, practically creates then a dinamic barrier effective to trigger a backpressure within said chamber which causes the membrane to become deformed by pushing it downwards against the bias of the spring 32.
The weight 25, allowed to rest on the membrane and rigid with the needle, will move down in consequence such that its conical tip 22 tends to cover the inlet port and throttle the flow further down, thus reducing the flow rate until a desired flow rate is achieved.
Thus, the percolator holding pan affords control over the flow pressure in a virtually automatic manner becaus-e of the pressure established downstream of the cupped percolator on closing the port in the event that the fLow of coffee proves to be too fast.
It should be added to the foregoing that a safety valve may be provided to reLieve the pressure in the event that, for a reason whatever, excessively high internal pressures are created.
Furthermore, provided in the bottom of the underpan 10 are drain holes 40 effective to prevent the formation of stagnant pockets of any kind.
W;th reference to F;gures 4 and 5, a percolator holding pan 51 according to the ;nvention comprises an aluminum body 52 having a handle 53 and bayonet coupling elements 54 for fitting to a delivery assembly of an "espresso" coffee maker.
In the body 1, there is formed a cavity 55 having a bottom 56.
The cavity 55 accommodates a cupped percolator 57 for the ' ' . ' '.. ..
- :
.
c~
.
coffee powder, which defines in said cavity 55 a compartment 58 formed between the cupped percolator and the bottom 55.
~ wo "espresso" coffee dispensing spouts, both ;ndicated at 59, are prov;ded on the body 52 at the bottom 56, thereby forming through said body 52 a liquid path, designated 60, which extends between the cupped percolator 57 and the spouts 59 and including said compartment 58~
The percolator holding pan 51 of this invention includes pressure control means 61 located in the path 60 for controlling the pressure downstream of the cupped percolator 57.
These pressure control means 61 comprise a restrictor 62, effective to produce a pilot backpressure, and a shut-off valve 63, interposed to the cupped percolator 57 and the restrictor 62 and being piloted by said backpressure.
The restrictor 62 has a calibrated port 64 formed through an elastically cleformable membrane 65 lying in the compartment 58. More specifically, the calibrated port 64 is formed in a nozzle 66 of a non-sticking material removably push-fitted in the membrane 65 at a bulge 67 thereof.
The periphery of the membrane 65 is configured as a toric ring 87 whereby it is held in the body 52. To this end, the body 52 is formed in two juxtaposed parts 88 and 89, held together by screw fasteners and defining a seat 9û ~or said toric ring. The membrane will deform relatively to the toric ring, generating neither friction nor jerks.
` The shut-off valve 63 includes a shutter seat 6~, formed in a partition 69 provided in said compartment 58 between the cupped percolator 57 and the membrane 56r and a shutter 70, which is arranged to contact the membrane 65 and is movable toward ." , : .
`
~ 3~
and away from said shutter seat 68 by the action of said membrane.
Formed between the part;tion 69 and the membrane 65 is a chamber 71 wherein said backpressure prevails and whose volume will change as the backpressure varies according to the extent by which the membrane is deformed~
It should be noted that a spring 72 is mounted between the membrane 65 and the bottom 56 to constantly bias the membrane 65 toward the partition 69.
Indicated at 73 are ra;sed splines formed on the partition 69, which prov;de spacers effective to prevent thé membrane 65 from resting across the entire surface of the partition 69 with the volume of the chamber 71 at a minimum, thereby preventing the membrane from sticking to the partition.
In particular, the shutter seat 68 would be formed preferably w;th;n an ;nsert 74 of a non-st;ck;ng and non-rust;ng material, force fitted ;nto sa;d part;tion.
The shutter 70 comprises a needle 75 received through the shutter seat 68 and hav;ng a frustocon;cal tip 76 mating w;th the shutter seat 68 to control the shutter passage cross-sect;on.
The shutter 70 further comprises an enlargement 77, formed along the needle 75, which is seated ;n a seat 78 formed ;n the bulge 77. The enlargement 77 prov;des we;ght to hold the shutter 68 ;n contact with the membrane 65.
This contact ;s effected by engagement of the enlargement 77 w;th ridges 79 formed on the membrane.
From the path 60, at a locat;on directly downstream of the ; cupped percolator 57 and upstream of the pressure control meAns 61, there b-an h-s ff a ~nduit 80, formed i- the brdy - ; - ' ' , ' .
: , . . . : .
- - - - . . :
. , . , :
- . , 52 and being open to the outside, in which a safety valve 81 is mounted.
The percolator holding pan 51 includes a plug 82, push fitted removably at the bottom 56, the spouts 59 being formed on said plug 82.
The plug 82 has a tubular portion 83 jutting into the compartment 58. The tubular portion 83 forms inwardly a collecting well 84, upstream of the spouts, and defines outwardly an annular groove 85 for receiving and centering one end of the spr;ng 72, the other spring end being fitted over the bulge 68.
Said annular groove 85 is provided with drain holes 86 to prevent stagnation within the groove itself.
The diameter of the plug 82 should be selected for convenient access to the nozzle 66, removal and re-assembling thereof.
The spouts 59 have their ends cut obl;quely, to a so-called flute mouthpiece configuration, with d;verging tips to hold the flows of "espresso" coffee issuing from the spouts well apart.
During the delivery of the "espresso" coffee, and for any grinding grade of the coffee powder or pressing thereof or the like, it has been found that delivery proceeds at nearly constant flow rate. This is owed to higher or lower flow rates than opt;mum immed;ately generat;ng, ;n passing the restr;ctor 62, higher or lower backpressures, respect;vely, ;n the chamber 71, and accord;ngly, a larger or smaller d;splacement of the membrane 65 away from the part;t;on~ Th;s results ;n the shutter be;ng brought more or less close to the shutter sea~. Ihe n~t esul~ is an increase or decrease of the pressur~
" ` ' ' ' `:
' ~ ~.
' .
9~
.
downstream of the cupped percolator which will prevail until the flow rate settles at the desired optimum value.
The main advantage of the percolator holding pan according to the ;nvent;on resides in that it adjusts the flow rate of the del;vered stream in an automatic manner, irrespective of the nature and state of the coffee powder being used, thus contributing toward optimum utilization of the coFfee powder.
In other words, the use of the percolator holding pan according to the invention yields "espresso" coffee of excellent quality, without requiring apDlication of any special sk1ll or reiterated attempts at perfecting the coffee powder pressing operation as dictated each time by the coffee powder actually employed.
The percolator holding pan of this invention is also advantageous from the sanitary standpoint. In fact, all the "espresso" coffee will readily flow out of the percolator holding pan at each delivery. In all cases~ it has proved easy and quick to clean out.
The holding pan of this invention is also advantageous from the standpoint of safety in use.
An additional advantage of the inventive percolator holding pan is that its construction is simple and reliable, thereby affording fla~less operation either -Following a number of successive deliveries or prolonged off cycles.
Lastly, it lends itself for use in lieu of a conventional one, to retrofit any "espresso" coffee maker whether of a professional or household type.
Understandably, several modifications and alterations may be applied to the percolator holding pans disclosed hereinabove, : ` ~- ' ' ' ' :
' " ' '- ' '. ' ' ' ' ' :' ' ,' .
~8~3U~
to meet specific contingent requirernents, w;thout depart;ng f rom the protect;on scope of the invention as set forth in the appended c la i ms .
~ .
~ :
, . .
,: . : .
.. .. .
. .
.
- . .
: . ., ,: ' ~ .
Claims (17)
1. A percolator holding pan for "expresso" coffee making machines comprising: a body adapted for fitting to a delivery assembly of an "expresso" coffee making machine, said body including a cavity formed therein having a bottom; a cupped percolator for holding coffee powder and housed within said cavity; at least one "expresso" coffee dispensing spout; a liquid flow path extending through said body between the cupped percolator and said at least one spout, said cupped percolator and said bottom of said cavity forming a compartment therebet-ween; pressure control means placed in said path for controlling the pressure downstream of the cupped percolator, said pressure control means comprising a restrictor effective to bring about a pilot backpressure, and a normally open shut-off valve interposed between the cupped percolator and the restrictor and being piloted by said backpressure.
2. A percolator holding pan according to claim 1, characterized in that said restrictor comprises a calibrated port formed through a membrane extending in said compartment, and that said shut-off valve comprises a shutter seat formed in a partition provided in said compartment between the membrane and the cupped percolator and a shutter contacting said membrane and being movable toward and away from said shutter seat by the action of said membrane, between the membrane and the partition there being defined a variable volume chamber wherein said backpressure prevails.
3. A percolator holding pan according to claim 2, characterized in that said shutter comprises a needle received through said shutter seat and having a frustoconical tip controlling the shutter passage cross-section.
4. A percolator holding pan according to claim 3, characterized in the said shutter includes an enlargement on the needle forming a weight effective to hold the shutter in contact with the membrane.
5. A percolator holding pan according to claim 4, characterized in that said needle extends through the calibrated port.
6. A percolator holding pan according to claim 5, characterized in that said partition has raised splines forming spacers between the membrane and the partition when the chamber has minimal volume.
7. A percolator holding pan according to claim 6, characterized in that it comprises a spring arranged to keep the membrane constantly biased toward the partition.
8. A percolator holding pan according to claim 7, characterized in that the partition and the membrane have both a frustoconical shape pitched respectively toward the shutter seat and the calibrated port.
9. A percolator holding pan according to claim 8, characterized in that the shutter seat is formed in an insert force fitted into said partition.
10. A percolator holding pan according to claim 9, characterized in that a nozzle of a non-sticking material is formed in said calibrated port and push fitted removably in said membrane.
11. A percolator holding pan according to claim 10, characterized in that it comprises a safety valve placed in a conduit branching off said liquid path upstream the pressure control means.
12. A percolator holding pan according to claim 11, characterized in that it comprises a plug with a preset diameter dimension and being push fitted at the bottom of the body, said plug being formed with the dispensing spouts.
13. A percolator holding pan according to claim 12, characterized in that said plug has a tubular portion jutting into the compartment and defining an annular groove for accommo-dating the spring.
14. A percolator holding pan according to claim 13, characterized in that said annular groove includes drain holes formed therein.
15. A percolator holding pan according to claim 14, characterized in that said spouts have their ends cut obliquely and diverging tips.
16. A percolator holding pan according to claim 15, characterized in that the membrane is formed with a toric ring around its periphery whereby the membrane can be retained in a seat defined in said body.
17. A percolator holding pan according to claim 16, characterized in that said body is formed in two juxtaposed parts screw-fastened together and defining said seat.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT21942/86A IT1197368B (en) | 1986-10-08 | 1986-10-08 | FILTER HOLDER CUP WITH CAPACITY ADJUSTMENT MEASURES FOR COFFEE MACHINES |
| IT21942-A/86 | 1986-10-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1280902C true CA1280902C (en) | 1991-03-05 |
Family
ID=11189160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000548928A Expired - Lifetime CA1280902C (en) | 1986-10-08 | 1987-10-08 | Percolator holding pan for espresso coffee making machines |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US4882982A (en) |
| EP (1) | EP0264352B1 (en) |
| AT (1) | ATE88331T1 (en) |
| CA (1) | CA1280902C (en) |
| DE (1) | DE3785539T2 (en) |
| ES (1) | ES2041272T3 (en) |
| IT (1) | IT1197368B (en) |
Families Citing this family (73)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2008609A6 (en) * | 1988-09-28 | 1989-07-16 | Soler Saez Daniel | Filter holder intended for machines for preparing infusions |
| US5127318A (en) * | 1988-12-12 | 1992-07-07 | Selsys Corporation | Apparatus and process for extracting espresso coffee |
| FR2655529B1 (en) * | 1989-12-13 | 1995-02-03 | Seb Sa | ELECTRIC APPARATUS FOR THE PREPARATION OF BEVERAGES BY RAPID PRESSURE EXTRACTION. |
| IT1240583B (en) * | 1990-03-28 | 1993-12-17 | Ariete Srl | FILTER HOLDER FOR ESPRESSO COFFEE MACHINES. |
| FR2662594B3 (en) * | 1990-05-30 | 1992-10-09 | Moulinex Sa | FILTER HOLDER FOR COFFEE MACHINE OF THE "ESPRESSO" TYPE. |
| EP0523278B1 (en) * | 1991-07-19 | 1995-11-22 | Eugster/Frismag AG | Espresso coffee machine |
| US5267506A (en) * | 1993-01-13 | 1993-12-07 | Zhihua Cai | Apparatus for automatic coffee brewing |
| EP0622039A1 (en) * | 1993-04-27 | 1994-11-02 | ESSEGIELLE S.r.l | Percolator cup for espresso coffee machines |
| PT8987U (en) * | 1994-03-11 | 1997-08-29 | Briel Electrodomesticos | COUNTER-PRESSURE FILTER, FOR CAFE CREME |
| US5638740A (en) * | 1995-02-24 | 1997-06-17 | Cai; Zhihua | Apparatus for brewing espresso and cappuccino |
| FR2744002B1 (en) * | 1996-01-25 | 1999-05-28 | Krups Fa Robert | FILTER HOLDER FOR ESPRESSO COFFEE MACHINE |
| DE69737535T2 (en) * | 1997-06-13 | 2007-12-06 | Anthony P. Roseville Priley | Process for making tea with an espresso machine |
| US6220147B1 (en) | 1997-06-13 | 2001-04-24 | Affinitea Brewing Technologies, Inc. | Beverage preparation and layering device for an espresso machine |
| US6016740A (en) * | 1997-11-25 | 2000-01-25 | Hilbrich; Daniel A. | Filtering device for an espresso-type coffee maker |
| WO2000007488A1 (en) * | 1998-08-06 | 2000-02-17 | Oficina De Investigacion Agrupada, S.A. | Filter for espresso coffee machine with a cream producing device |
| US6203837B1 (en) | 1998-10-06 | 2001-03-20 | Xcafe' Llc | Coffee system |
| EP1016364A3 (en) * | 1998-12-18 | 2000-11-02 | Antica Torref. del Borgo Bardassano snc di Boido Aldo e C. | Device and process for the formation of cream, usable on machines for the preparation of infusions, in particular coffee |
| EP1231842B1 (en) | 1999-10-28 | 2007-03-07 | X Cafe, LLC | Methods and systems for forming concentrated consumable extracts |
| US6488976B1 (en) | 1999-12-13 | 2002-12-03 | Affinitea Brewing Technologies, Inc. | Method and apparatus for brewing tea with an espresso machine |
| US6405637B1 (en) | 2000-01-13 | 2002-06-18 | Houseware Technology Group Llc | Fluid delivery system for generating pressure pulses to make beverages |
| IT1320945B1 (en) * | 2000-02-07 | 2003-12-18 | Francesco Bonanno | AUTOMATIC EMULSIFIER WITH SLIDING ADJUSTMENT AND FLOW SHOCK ABSORBER. |
| IN192798B (en) | 2000-03-15 | 2004-05-22 | Fianara Int Bv | |
| US6740345B2 (en) * | 2000-12-22 | 2004-05-25 | Edward Zhihua Cai | Beverage making cartridge |
| ITMI20010972A1 (en) * | 2001-05-11 | 2002-11-11 | De Longhi Spa | FILTER HOLDER OF A COFFEE STAIN AND PROCEDURE TO PRODUCE A COFFEE BEVERAGE |
| FR2833825B1 (en) * | 2001-12-24 | 2004-07-02 | Carasso Bossert S A | COFFEE FILTER HOLDER |
| EP1460921B1 (en) * | 2001-12-24 | 2006-03-15 | Koninklijke Philips Electronics N.V. | Beverage device for making a beverage with a foam layer on top |
| US20030226449A1 (en) * | 2001-12-24 | 2003-12-11 | Philippe Carasso | Coffee Filter holder |
| ES2229843B1 (en) * | 2002-05-29 | 2006-02-01 | Carlos Rodriguez Ferre | REINFORCED FLAT STRUCTURE, FOR LARGE WEIGHT SUPPORT. |
| NL1020833C2 (en) * | 2002-06-12 | 2003-12-15 | Sara Lee De Nv | Device for preparing a beverage suitable for consumption with a fine-bubble froth layer. |
| NL1020836C2 (en) * | 2002-06-12 | 2003-12-15 | Sara Lee De Nv | Device and method for preparing coffee with a fine-bubble froth layer, in particular cappuccino. |
| ES2229847B1 (en) * | 2002-06-18 | 2006-07-01 | Electrodomesticos Taurus, S.L. | EXPRESS COFFEE HOLDER ASSEMBLY |
| US6840158B2 (en) | 2002-12-09 | 2005-01-11 | Edward Z. Cai | Device for making coffee drink having a crema layer |
| US7334799B2 (en) * | 2002-12-23 | 2008-02-26 | Caterpillar Inc. | Sealing device for a turbocharger |
| CN100515290C (en) * | 2003-01-06 | 2009-07-22 | 皇家飞利浦电子股份有限公司 | Container receiving unit with even distribution of beverage |
| US6935222B2 (en) * | 2003-07-09 | 2005-08-30 | Electrical And Electronics Limited | Locking device sustaining high pressure for coffee maker lid |
| US20050076784A1 (en) * | 2003-10-10 | 2005-04-14 | Hp Intellectual Corp. | Brewing apparatus pod carrier and frothing attachment |
| US7281467B2 (en) * | 2003-10-22 | 2007-10-16 | Household Technology Group Llc | Fluid delivery system for generating pressurized hot water pulses |
| US7237475B2 (en) * | 2003-12-23 | 2007-07-03 | Electrical And Electronics, Limited | Cabinet design of filter holder for pressurized espresso machines |
| US7617763B2 (en) * | 2003-12-23 | 2009-11-17 | Electrical & Electronics Limited | Motorized and remote-controlled cabinet design of filter holder for pressurized espresso machines |
| US7228790B2 (en) * | 2004-02-11 | 2007-06-12 | Electrical And Electronics Limited | Spoon brewing apparatus |
| EP1676509A1 (en) * | 2004-12-30 | 2006-07-05 | Rhea Vendors S.p.A. | Process and apparatus for controlling the preparation of brewed beverages |
| US20070259092A1 (en) * | 2005-08-02 | 2007-11-08 | Chen Yee M | Brewing apparatus for preparing foam, froth, or crema under low pressure |
| US20070028783A1 (en) * | 2005-08-02 | 2007-02-08 | Chen Yee M | Brewing apparatus for preparing foam, froth, or crema under low pressure |
| US20070028784A1 (en) * | 2005-08-02 | 2007-02-08 | Chen Yee M | Brewing apparatus for preparing foam, froth, or crema under low pressure |
| US8230776B2 (en) * | 2005-08-02 | 2012-07-31 | Electrical & Electronics Ltd. | Brewing apparatus for preparing foam, froth or crema under low pressure |
| WO2007020610A1 (en) * | 2005-08-17 | 2007-02-22 | The Procter & Gamble Company | Beverage brewing devices |
| ES2322860T3 (en) * | 2005-09-21 | 2009-06-30 | Illycaffe' S.P.A. | CARTRIDGE CONTAINING A SUBSTANCE TO REMOVE A DRINK. |
| US11832755B2 (en) * | 2007-07-13 | 2023-12-05 | Adrian Rivera | Brewing material container for a beverage brewer |
| US10722066B2 (en) * | 2010-12-04 | 2020-07-28 | Adrian Rivera | Windowed single serving brewing material holder |
| US11337543B2 (en) * | 2007-07-13 | 2022-05-24 | Adrian Rivera | Brewing material holder |
| ITFI20070206A1 (en) * | 2007-09-14 | 2009-03-15 | Saeco Ipr Ltd | "A FILTER HOLDER FOR COFFEE MACHINES WITH DEVICES FOR THE REGULATION OF THE QUALITY OF COFFEE AND THE MACHINE INCLUDING THE FILTER DOOR" |
| JP2009093348A (en) * | 2007-10-05 | 2009-04-30 | Hitachi Ltd | Information processing apparatus and information processing system |
| EP2510802B2 (en) | 2008-01-29 | 2020-01-08 | Koninklijke Douwe Egberts B.V. | System for preparing a beverage |
| US9763461B2 (en) | 2009-10-28 | 2017-09-19 | Bkon Llc | Vacuum infusion method |
| US9295358B2 (en) | 2009-10-28 | 2016-03-29 | Bkon Llc | Vacuum brewed beverage machine and vacuum brewing method |
| WO2012010317A1 (en) * | 2010-07-22 | 2012-01-26 | Krüger Gmbh & Co. Kg | Portion capsule having an identifier |
| US9066623B2 (en) * | 2010-11-15 | 2015-06-30 | Conair Corporation | Brewed beverage appliance and method |
| EP2887844B1 (en) * | 2012-08-21 | 2017-09-27 | Breville Pty Limited | Portafilter for capsule |
| US20140090565A1 (en) * | 2012-10-02 | 2014-04-03 | Klub Manufacturing Corp. | Buffer Structure of Portafilter |
| EP2767198B1 (en) * | 2013-02-14 | 2020-04-22 | Alex Gort-Barten | A filter holder for an espresso coffee machine |
| GB2512815A (en) * | 2013-02-14 | 2014-10-15 | Alex Gort-Barten | A filter holder for an espresso coffee machine |
| PT107672B (en) * | 2014-05-30 | 2020-11-02 | Novadelta - Comércio E Indústria De Cafés, Lda. | DRINK PREPARATION MACHINE WITH OPTIMIZED DRINK DISCHARGE DISPOSAL |
| US10111554B2 (en) | 2015-03-20 | 2018-10-30 | Meltz, LLC | Systems for and methods of controlled liquid food or beverage product creation |
| US9480359B1 (en) | 2015-07-30 | 2016-11-01 | Meltz, LLC | Semi-continuous processes for creating an extract from coffee or other extractable materials |
| ITUB20153105A1 (en) * | 2015-08-13 | 2017-02-13 | Andrea Ceccarini | AUXILIARY INFUSION DEVICE, PARTICULARLY FOR ESPRESSO COFFEE PREPARATION MACHINES |
| CN205322113U (en) * | 2015-12-09 | 2016-06-22 | 广东德豪润达电气股份有限公司 | Coffee powder closing device of coffee machine and have its coffee machine |
| EP3463011B1 (en) * | 2016-06-01 | 2023-10-18 | Nupuk Limited | Device, method and system for dispensing fat-based edible consumables |
| EP3614889A1 (en) | 2017-04-27 | 2020-03-04 | Meltz LLC | Method for centrifugal extraction and apparatus suitable for carrying out this method |
| KR102071046B1 (en) * | 2018-02-05 | 2020-01-28 | 주식회사 이노디자인 | Dripper and portable coffee drinking tumbler |
| US11724849B2 (en) | 2019-06-07 | 2023-08-15 | Cometeer, Inc. | Packaging and method for single serve beverage product |
| US11805934B1 (en) * | 2020-10-21 | 2023-11-07 | Adrian Rivera | Brewing material lid and container for a beverage brewer |
| US20230012660A1 (en) * | 2021-07-16 | 2023-01-19 | Lincoln Global, Inc. | Plasma cutting system with dual electrode plasma arc torch |
| IT202100024806A1 (en) | 2021-09-28 | 2023-03-28 | Caffitaly System Spa | Apparatus for preparing a drink by infusing a food substance |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2338140A (en) * | 1939-12-16 | 1944-01-04 | Robert C Brown Jr | Method for making coffeee |
| US2997940A (en) * | 1958-05-21 | 1961-08-29 | Ref Mfg Corp | Method and canister means for making beverages |
| FR1367182A (en) * | 1963-08-16 | 1964-07-17 | Process for the preparation of coffee foam, and device for its implementation | |
| US3333527A (en) * | 1964-12-14 | 1967-08-01 | Vacuum Die Casting Corp | Drip brew maker with delay valve |
| IT1075342B (en) * | 1977-04-18 | 1985-04-22 | Haddad Adrien | PRESSURE AND FLUID SUPPLY AND CONTROL DEVICE, ESPECIALLY FOR COFFEE MACHINES |
| DE3035157A1 (en) * | 1980-09-18 | 1982-04-22 | Hans Wirtz Plastikverarbeitung GmbH, 5108 Monschau | Expresso coffee machine with brewing head ensuring constant foaming - has partially closed sieve insert ensuring build-up of pressure prior to delivery |
| IT1161041B (en) * | 1983-04-14 | 1987-03-11 | Nuova Faema Spa | BREWING GROUP FOR ESPRESSO COFFEE MACHINES |
| DE3400567C3 (en) * | 1984-01-10 | 1994-07-28 | Krups Fa Robert | Electrically operated espresso machine |
| DE3416403A1 (en) * | 1984-05-03 | 1985-11-07 | Braun Ag, 6000 Frankfurt | ELECTRIC COFFEE MACHINE WITH DRIP PROTECTION VALVE ON FILTER BOTTOM |
| DE3506781C1 (en) * | 1985-02-26 | 1986-07-17 | Württembergische Metallwarenfabrik AG, 7340 Geislingen | coffee machine |
-
1986
- 1986-10-08 IT IT21942/86A patent/IT1197368B/en active
-
1987
- 1987-10-06 US US07/105,130 patent/US4882982A/en not_active Expired - Lifetime
- 1987-10-07 AT AT87830355T patent/ATE88331T1/en not_active IP Right Cessation
- 1987-10-07 EP EP87830355A patent/EP0264352B1/en not_active Expired - Lifetime
- 1987-10-07 ES ES198787830355T patent/ES2041272T3/en not_active Expired - Lifetime
- 1987-10-07 DE DE8787830355T patent/DE3785539T2/en not_active Expired - Fee Related
- 1987-10-08 CA CA000548928A patent/CA1280902C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE3785539D1 (en) | 1993-05-27 |
| IT8621942A1 (en) | 1988-04-08 |
| ES2041272T3 (en) | 1993-11-16 |
| IT8621942A0 (en) | 1986-10-08 |
| DE3785539T2 (en) | 1993-08-19 |
| IT1197368B (en) | 1988-11-30 |
| EP0264352B1 (en) | 1993-04-21 |
| US4882982A (en) | 1989-11-28 |
| EP0264352A1 (en) | 1988-04-20 |
| ATE88331T1 (en) | 1993-05-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1280902C (en) | Percolator holding pan for espresso coffee making machines | |
| US8826804B2 (en) | Filter-holder for coffee machines with means for adjusting the quality of the coffee, and a machine comprising said filter-holder | |
| US6382083B2 (en) | Coffee machine | |
| US5901635A (en) | Flow control and flow rate control mechanisms for use in brewing machines with fluidly connected chambers | |
| US5490448A (en) | Beverage brewing machine | |
| EP0857447B1 (en) | Brewing apparatus with selectable dripping zones | |
| EP0622039A1 (en) | Percolator cup for espresso coffee machines | |
| US20010050002A1 (en) | Method and device for preparing espresso coffee | |
| EP0231156B1 (en) | A manually operated coffee-making machine | |
| GB2162418A (en) | Combined coffee grinding and brewing machine | |
| US5590581A (en) | Assembly kit for a filter coffee maker | |
| EP2109386B1 (en) | Coffee-maker structure for preparation of hot beverages | |
| EP0880330B1 (en) | Filter-holder for coffee machine of the espresso type | |
| US5775204A (en) | Tea filter assembly for a coffee or tea maker | |
| US20040103796A1 (en) | Filter-holder for espresso coffee machine | |
| US5970849A (en) | Coffee maker | |
| CN208355233U (en) | A kind of caffeine concentration regulating device | |
| JPH0747135B2 (en) | Water discharge nozzle | |
| JPH0433082Y2 (en) | ||
| CN219556867U (en) | Hand flushing kettle | |
| CN217118158U (en) | Needle cylinder type manual coffee pressing machine device | |
| CN117224012A (en) | Milk foaming device with mark air passage | |
| JPH03228715A (en) | Tea extracting device for automatic tea supplier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |