CA1277303C - Tap controller for liquid delivery line - Google Patents
Tap controller for liquid delivery lineInfo
- Publication number
- CA1277303C CA1277303C CA000576597A CA576597A CA1277303C CA 1277303 C CA1277303 C CA 1277303C CA 000576597 A CA000576597 A CA 000576597A CA 576597 A CA576597 A CA 576597A CA 1277303 C CA1277303 C CA 1277303C
- Authority
- CA
- Canada
- Prior art keywords
- chamber
- piston
- housing
- tap
- pressure
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/14—Actuating devices; Operating means; Releasing devices actuated by fluid for mounting on, or in combination with, hand-actuated valves
- F16K31/143—Actuating devices; Operating means; Releasing devices actuated by fluid for mounting on, or in combination with, hand-actuated valves the fluid acting on a piston
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D1/00—Apparatus or devices for dispensing beverages on draught
- B67D1/08—Details
- B67D1/12—Flow or pressure control devices or systems, e.g. valves, gas pressure control, level control in storage containers
- B67D1/14—Reducing valves or control taps
- B67D1/1405—Control taps
- B67D1/1411—Means for controlling the build-up of foam in the container to be filled
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D1/00—Apparatus or devices for dispensing beverages on draught
- B67D1/08—Details
- B67D1/12—Flow or pressure control devices or systems, e.g. valves, gas pressure control, level control in storage containers
- B67D1/14—Reducing valves or control taps
- B67D1/1405—Control taps
- B67D1/145—Control taps comprising a valve shutter movable in a direction perpendicular to the valve seat
- B67D1/1466—Control taps comprising a valve shutter movable in a direction perpendicular to the valve seat the valve shutter being opened in a direction opposite to the liquid flow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/16—Actuating devices; Operating means; Releasing devices actuated by fluid with a mechanism, other than pulling-or pushing-rod, between fluid motor and closure member
- F16K31/163—Actuating devices; Operating means; Releasing devices actuated by fluid with a mechanism, other than pulling-or pushing-rod, between fluid motor and closure member the fluid acting on a piston
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
- F16K31/363—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor the fluid acting on a piston
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
- F16K31/38—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor in which the fluid works directly on both sides of the fluid motor, one side being connected by means of a restricted passage and the motor being actuated by operating a discharge from that side
- F16K31/383—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor in which the fluid works directly on both sides of the fluid motor, one side being connected by means of a restricted passage and the motor being actuated by operating a discharge from that side the fluid acting on a piston
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Devices For Dispensing Beverages (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
There is provided a new and useful liquid flow controller head comprising a housing, a first chamber within the housing, a piston having first and second sides and mounted in the chamber in sealed sliding engagement therewith, the piston adapted to engage and operate a push/pull activation lever of a liquid dispensing tap, and fluid passages through the housing into the chamber on opposite sides of the piston, and wherein the size of the fluid passages is chosen such that, when either passage is charged with compressed air at a predetermined pressure, the piston will slide responsive to the pressure at a predetermined speed.
There is provided a new and useful liquid flow controller head comprising a housing, a first chamber within the housing, a piston having first and second sides and mounted in the chamber in sealed sliding engagement therewith, the piston adapted to engage and operate a push/pull activation lever of a liquid dispensing tap, and fluid passages through the housing into the chamber on opposite sides of the piston, and wherein the size of the fluid passages is chosen such that, when either passage is charged with compressed air at a predetermined pressure, the piston will slide responsive to the pressure at a predetermined speed.
Description
~ '~77303 This invention relates to a head for controlling operation of a push/pull type valve or tap in a liquid delivery line. A typical example is a beer tap for serving draft beer.
sACXG~OUND O~ ~HB I~V~NTION
There are numerous situations in which foaming in liquids creates serious problems in liquid delivery lines. The foaming may result in the delivery of incorrect quantities or in wastage due to material foaming out of a container.
While the invention is not limited to any one particular application, it is very useful in the control of draft beer delivery and so will be discussed in that context. There are a number of problems associated with the serving of draft beer which result in a substantial loss of profits otherwise arising out of the sale oE beer. These include losses arising out of a bartender dispensing free drinks and losses arising out of the difficulty of dispensing draft beer using a conventional tap.
The problem of free drinks can be readily remedied by the replacing of the conventional handle with a closed automatic controller which will open the tap only in response to recorded input commands. The precise quantity o~ beer emanating from the tap can thus be monitored.
The problem of ~osses arising out of the inherent defficiencies of the tap present a more dlfficult problem. One ~, , ~773~3 major cause of losses at the tap is the fact that the speed of opening and closing the tap i5 very important in controlling foaming. If the tap is opened too quickly, the leading edge of the beer is immediately disturbed and foaming in the tap results. This type of foaming pro'pagates itself~ so that a very high proportion of the beer is in a foamed state when it arrives in the glass so that a very large "head" arises on the beer. It is then necessary to continue to add beer until the foam flows out of the glass and the beer reaches the required level or else to simply pour off the foam and begin the process of pouring the beer once again.
If the tap is closed too quickly, the leading edge of the beer which is colliding with the closed valve in the tap will immediately begin foaming, so that, no matter how the tap is turned on for the next beer, there will already be foam in the system which will then move into the glass.
While one not involved in the business might consider that the losses to which reference is made above are trivial, that in fact is not the case. The losses are of substantial significance.
It goes without saying that it is very difficult for even a conscientious barman to open and close the beer tap at the proper speed. The fact that a busy barman will want to get as many containers of beer from the tap as quickly as possible is a substantial disadvantage in this respect. This is quite apart from the fact that it is difficult in any event to ~ind the ~7~3 [)3 proper speed for opening the tap.
It is against this background that the present invention arises. A flow controller head has now been devised which prevents tampering and significantly reduces foaming by controlling the speed of opening and closing of the tap or other push/pull t~pe valve in a liquid delivery line.
PRIOR ~T
Applicant is not aware of any specific prior art documents relevant to the invention. There have been proposed from time to time controllers which have a relatively complicated system of electric motors and linkages to control pouring, but these have not proven satisfactory.
BRIE~ SUM~ ~ Y OF T~E INVE~ION
It has now been discovered that a pneumatically 15 actuated piston can be utilized to open and close a push/pull valve at a controlled rate of speed. The rate is controlled by predetermining one of the pressure of the air driving the piston or the size of the fluid passages to the piston chamber and then adjusting the other of the two to achieve the desired speed. It is preferred that the size of the passages be chosen based on the available air pressure.
Thus, the invention provides a liquid flow controller 73~3 head comprising a housing, a Eirst chamber within the housing, a piston having first and second sides and mounted in the chamber in sea]ed sliding engagement therewith, the piston adapted to engage and operate a push/pull activation lever of a liquld dispensing tap, and fluid passages through the housing into the chamber on opposite sides of the piston, and wherein the size of the fluid passages is chosen such that, when either passage is charged with compressed air at a predetermined pressure, the piston will slide responsive to the pressure at a predetermined speed.
In a preferred embodiment the controller head includes in addition a second chamber in the housing joined to the first chamber, a piston rod connected to the piston and in sealed sliding engagement with the second chamber, and a third partially threaded chamber in the housing joined to the second chamber and adapted to threadedly engage the valve control lever housing of a conventional beverage tap, whereby, when so engaged, the piston rod is in operative engagement with the lever.
BRI~F SUMMARY O~ T~E DRaWI~GS
In drawings which illustrate embodiments of the nvention, FIGURE 1 is a cross section through a controller according to the invention mounted on a beverage tap; and FIGURE 2 is a perspective view of a controller 9~77;3~3 according to the invention mounted on a beverage tap.
While the lnvention will be described in conjunction with illustrated embodiments, it will be understood that lt is not intended to limit the invention to such embodiments. On the contrary, it is intended to cover all alternatives, modifications and equivalents as may be included within the spirit and scope of the invention as defined by the appended claims.
DETAII,ED DES~RIPTI02~_OF T~IP. PREFERRED l~MBODIM~3NTS
In the following description, similar features in the drawings have been given similar reference numerals.
The controller head 10 is constructed within a housing 12~ ~ousing 12 includes the first preferably cylindrical chamber 14 in which the piston 16 is located. The piston 16 is in sliding engagement with the sidewall of chamber 14. The piston 16 is sealed around its edge 18 by the sealing ring 20.
Fluid passages 22 and 24 pass through housing 12 into chambex 14 and enter that chamber on opposite sides 26 and 28 respectively of piston 16. Fittings 30 and 32 are provided in housing 12 at the entrances to passages 2~ and 24 respectively for connection of fluid delivery lines. The fluid is preferably compressed air, although other gases may be chosen.
The piston rod 34 extends from the side 26 of piston 16 into a second pxeferably cylindrical chamber 36 in housing 12.
The rod 34 is in sliding engagement with the sidewall of chamber ;
~'773~3 36 and is sealed by a sealing ring 38.
Rod 3~ is provided with a slot 40 adapted to engage the activation lever 42 of a conventional beverage tap 44.
In the usual arrangement for serving beverages such as beer, a handle assembly is engaged with the threaded section 46 of housing 48 of tap 44.
In the present case a third chamber 50 is provided in housing 12 of the controller head lO. The chamber 50 is threaded to engage the threaded section 46 of housing 48 of tap 44. The controller head lO can then simply be screwed onto the threaded section 46 of tap 4~ in place of the conventional handle with the top 52 of lever 42 received in the slot 40.
The lever 42 is capable of rotation about the seating of the ball 54 which through the linkage 56 opens and closes the tap seal 58. Beer flow is inward at 59 and out at 60.
As indicated above, a key factor in the onset of foaming in certain foamable liquids such as beer is the speed at which the delivery tap is opened and closed. Since the human element in utilizing a conventional tap handle makes it virtuallv impossible to open and close the tap at the proper speed, this is done by controlling the rate of movement of the piston 16. This is achieved by co-ordinating the pressure of the operating fluid and the size of passages 22 and 24.
~ompressed air is normally available at a bar or other beverage sales location to drive various types of liquids as may be required. In a typical case the line pressure is 75 to 100 9 ~2'773~3 psi. In the present invention with a piston 16 having a diameter of about 1.375 inches and driven by air at a pressure of 75 to 100 psi, passages 22 and 24 having a diameter of about 0.031 inches will cause piston 16 to move at an appropriate speed to open and close the tap 52 at a speed which will substantial reduce foaming in beer. The entry of the compressed air to the passages 22 and 24 can be controlled in a number of ways. For example, a timed opening may be electronically controlled to deliver a preset quantity of beer, or a manual control on the air line may be utilized.
The preferred piston speed is in the range of about 12 to about 18 inches per minute or about 0.20 to about 0.33 inches per second.
Thus it is apparent that there has been provided in accordance with the invention a head for controlling operation of a push/pull type valve or tap in a li~uid delivery line that fully satisfies the objects, aims and advantages set forth above. While the invention has been described in conjunction ~ith specific embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the foregoing description.
Accordingly, it is intended to embrace all such alternatives, modifications and variations as fall within the spirit and broad scope of the in~ention.
sACXG~OUND O~ ~HB I~V~NTION
There are numerous situations in which foaming in liquids creates serious problems in liquid delivery lines. The foaming may result in the delivery of incorrect quantities or in wastage due to material foaming out of a container.
While the invention is not limited to any one particular application, it is very useful in the control of draft beer delivery and so will be discussed in that context. There are a number of problems associated with the serving of draft beer which result in a substantial loss of profits otherwise arising out of the sale oE beer. These include losses arising out of a bartender dispensing free drinks and losses arising out of the difficulty of dispensing draft beer using a conventional tap.
The problem of free drinks can be readily remedied by the replacing of the conventional handle with a closed automatic controller which will open the tap only in response to recorded input commands. The precise quantity o~ beer emanating from the tap can thus be monitored.
The problem of ~osses arising out of the inherent defficiencies of the tap present a more dlfficult problem. One ~, , ~773~3 major cause of losses at the tap is the fact that the speed of opening and closing the tap i5 very important in controlling foaming. If the tap is opened too quickly, the leading edge of the beer is immediately disturbed and foaming in the tap results. This type of foaming pro'pagates itself~ so that a very high proportion of the beer is in a foamed state when it arrives in the glass so that a very large "head" arises on the beer. It is then necessary to continue to add beer until the foam flows out of the glass and the beer reaches the required level or else to simply pour off the foam and begin the process of pouring the beer once again.
If the tap is closed too quickly, the leading edge of the beer which is colliding with the closed valve in the tap will immediately begin foaming, so that, no matter how the tap is turned on for the next beer, there will already be foam in the system which will then move into the glass.
While one not involved in the business might consider that the losses to which reference is made above are trivial, that in fact is not the case. The losses are of substantial significance.
It goes without saying that it is very difficult for even a conscientious barman to open and close the beer tap at the proper speed. The fact that a busy barman will want to get as many containers of beer from the tap as quickly as possible is a substantial disadvantage in this respect. This is quite apart from the fact that it is difficult in any event to ~ind the ~7~3 [)3 proper speed for opening the tap.
It is against this background that the present invention arises. A flow controller head has now been devised which prevents tampering and significantly reduces foaming by controlling the speed of opening and closing of the tap or other push/pull t~pe valve in a liquid delivery line.
PRIOR ~T
Applicant is not aware of any specific prior art documents relevant to the invention. There have been proposed from time to time controllers which have a relatively complicated system of electric motors and linkages to control pouring, but these have not proven satisfactory.
BRIE~ SUM~ ~ Y OF T~E INVE~ION
It has now been discovered that a pneumatically 15 actuated piston can be utilized to open and close a push/pull valve at a controlled rate of speed. The rate is controlled by predetermining one of the pressure of the air driving the piston or the size of the fluid passages to the piston chamber and then adjusting the other of the two to achieve the desired speed. It is preferred that the size of the passages be chosen based on the available air pressure.
Thus, the invention provides a liquid flow controller 73~3 head comprising a housing, a Eirst chamber within the housing, a piston having first and second sides and mounted in the chamber in sea]ed sliding engagement therewith, the piston adapted to engage and operate a push/pull activation lever of a liquld dispensing tap, and fluid passages through the housing into the chamber on opposite sides of the piston, and wherein the size of the fluid passages is chosen such that, when either passage is charged with compressed air at a predetermined pressure, the piston will slide responsive to the pressure at a predetermined speed.
In a preferred embodiment the controller head includes in addition a second chamber in the housing joined to the first chamber, a piston rod connected to the piston and in sealed sliding engagement with the second chamber, and a third partially threaded chamber in the housing joined to the second chamber and adapted to threadedly engage the valve control lever housing of a conventional beverage tap, whereby, when so engaged, the piston rod is in operative engagement with the lever.
BRI~F SUMMARY O~ T~E DRaWI~GS
In drawings which illustrate embodiments of the nvention, FIGURE 1 is a cross section through a controller according to the invention mounted on a beverage tap; and FIGURE 2 is a perspective view of a controller 9~77;3~3 according to the invention mounted on a beverage tap.
While the lnvention will be described in conjunction with illustrated embodiments, it will be understood that lt is not intended to limit the invention to such embodiments. On the contrary, it is intended to cover all alternatives, modifications and equivalents as may be included within the spirit and scope of the invention as defined by the appended claims.
DETAII,ED DES~RIPTI02~_OF T~IP. PREFERRED l~MBODIM~3NTS
In the following description, similar features in the drawings have been given similar reference numerals.
The controller head 10 is constructed within a housing 12~ ~ousing 12 includes the first preferably cylindrical chamber 14 in which the piston 16 is located. The piston 16 is in sliding engagement with the sidewall of chamber 14. The piston 16 is sealed around its edge 18 by the sealing ring 20.
Fluid passages 22 and 24 pass through housing 12 into chambex 14 and enter that chamber on opposite sides 26 and 28 respectively of piston 16. Fittings 30 and 32 are provided in housing 12 at the entrances to passages 2~ and 24 respectively for connection of fluid delivery lines. The fluid is preferably compressed air, although other gases may be chosen.
The piston rod 34 extends from the side 26 of piston 16 into a second pxeferably cylindrical chamber 36 in housing 12.
The rod 34 is in sliding engagement with the sidewall of chamber ;
~'773~3 36 and is sealed by a sealing ring 38.
Rod 3~ is provided with a slot 40 adapted to engage the activation lever 42 of a conventional beverage tap 44.
In the usual arrangement for serving beverages such as beer, a handle assembly is engaged with the threaded section 46 of housing 48 of tap 44.
In the present case a third chamber 50 is provided in housing 12 of the controller head lO. The chamber 50 is threaded to engage the threaded section 46 of housing 48 of tap 44. The controller head lO can then simply be screwed onto the threaded section 46 of tap 4~ in place of the conventional handle with the top 52 of lever 42 received in the slot 40.
The lever 42 is capable of rotation about the seating of the ball 54 which through the linkage 56 opens and closes the tap seal 58. Beer flow is inward at 59 and out at 60.
As indicated above, a key factor in the onset of foaming in certain foamable liquids such as beer is the speed at which the delivery tap is opened and closed. Since the human element in utilizing a conventional tap handle makes it virtuallv impossible to open and close the tap at the proper speed, this is done by controlling the rate of movement of the piston 16. This is achieved by co-ordinating the pressure of the operating fluid and the size of passages 22 and 24.
~ompressed air is normally available at a bar or other beverage sales location to drive various types of liquids as may be required. In a typical case the line pressure is 75 to 100 9 ~2'773~3 psi. In the present invention with a piston 16 having a diameter of about 1.375 inches and driven by air at a pressure of 75 to 100 psi, passages 22 and 24 having a diameter of about 0.031 inches will cause piston 16 to move at an appropriate speed to open and close the tap 52 at a speed which will substantial reduce foaming in beer. The entry of the compressed air to the passages 22 and 24 can be controlled in a number of ways. For example, a timed opening may be electronically controlled to deliver a preset quantity of beer, or a manual control on the air line may be utilized.
The preferred piston speed is in the range of about 12 to about 18 inches per minute or about 0.20 to about 0.33 inches per second.
Thus it is apparent that there has been provided in accordance with the invention a head for controlling operation of a push/pull type valve or tap in a li~uid delivery line that fully satisfies the objects, aims and advantages set forth above. While the invention has been described in conjunction ~ith specific embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the foregoing description.
Accordingly, it is intended to embrace all such alternatives, modifications and variations as fall within the spirit and broad scope of the in~ention.
Claims (14)
1. A liquid flow controller head comprising:
a housing;
a first chamber within said housing;
a piston having first and second sides and mounted in said chamber in sealed sliding engagement therewith, said piston adapted to engage and operate a push/pull activation lever of a liquid dispensing tap; and fluid passages through said housing into said chamber on opposite sides of said piston; and wherein the size of said fluid passages is chosen such that, when either passage is charged with gas at a predetermined pressure, said piston will slide responsive to said pressure at a predetermined speed.
a housing;
a first chamber within said housing;
a piston having first and second sides and mounted in said chamber in sealed sliding engagement therewith, said piston adapted to engage and operate a push/pull activation lever of a liquid dispensing tap; and fluid passages through said housing into said chamber on opposite sides of said piston; and wherein the size of said fluid passages is chosen such that, when either passage is charged with gas at a predetermined pressure, said piston will slide responsive to said pressure at a predetermined speed.
2. The controller head of claim 1 wherein said housing is adapted to be mounted over the activation lever of a conventional beverage tap.
3. The controller head of claim 1 wherein said tap is a beer tap.
4. The controller head of claim 1 wherein said predetermined speed is about 0.20 to about 0.33 inches per second.
5. The controller head of claim 1 including, in addition:
a second chamber in said housing joined to said first chamber;
a piston rod connected to said piston and in sealed sliding engagement with said second chamber;
a third partially threaded chamber in said housing joined to said second chamber and adapted to threadedly engage the valve control lever housing of a conventional beverage tap, whereby, when so engaged, said piston rod is in operative engagement with said lever.
a second chamber in said housing joined to said first chamber;
a piston rod connected to said piston and in sealed sliding engagement with said second chamber;
a third partially threaded chamber in said housing joined to said second chamber and adapted to threadedly engage the valve control lever housing of a conventional beverage tap, whereby, when so engaged, said piston rod is in operative engagement with said lever.
6. The controller head of claim 5 wherein said tap is a beer tap.
7. The controller head of claim 5 wherein said piston rod includes a notch therein which receives a top section of said lever when said head is engaged on said control lever housing.
8. The controller head of claim 1 wherein the said gas is air at a pressure of about 75 to about 100 psi.
9. The controller head of claim 1 wherein said passages are approximately 0.031 inches in diameter.
10. The controller head of claim 5 wherein the said fluid is air at a pressure of about 75 to about 100 psi and the said passages have a diameter of about 0.031 inches.
11. The controller head of claim 5 wherein said predetermined speed is about 0.20 to about 0.33 inches per second.
12. A liquid flow controller head comprising:
a housing;
a first chamber within said housing;
a piston for engaging and operating a push/pull activation lever of a liquid dispensing tap, said piston having first and second sides and mounted in said chamber in sealed sliding engagement therewith; and at least two fluid passage through said housing into said chamber, one said passage on each of respective ones of said first and second sides of said piston, wherein the size of said fluid passages is chosen such that, when either passage is charged with gas at a predetermined pressure and pressure in the other said passage is released, said piston will slide responsive to said pressure at a predetermined speed;
a second chamber in said housing joined to said first chamber;
a piston rod connected to said piston and in sealed sliding engagement with said second chamber;
a third partially threaded chamber in said housing joined to said second chamber for engaging the activation lever housing of said tap, whereby when said head is engaged on said activation lever housing, said piston rod is in operative engagement with said lever.
a housing;
a first chamber within said housing;
a piston for engaging and operating a push/pull activation lever of a liquid dispensing tap, said piston having first and second sides and mounted in said chamber in sealed sliding engagement therewith; and at least two fluid passage through said housing into said chamber, one said passage on each of respective ones of said first and second sides of said piston, wherein the size of said fluid passages is chosen such that, when either passage is charged with gas at a predetermined pressure and pressure in the other said passage is released, said piston will slide responsive to said pressure at a predetermined speed;
a second chamber in said housing joined to said first chamber;
a piston rod connected to said piston and in sealed sliding engagement with said second chamber;
a third partially threaded chamber in said housing joined to said second chamber for engaging the activation lever housing of said tap, whereby when said head is engaged on said activation lever housing, said piston rod is in operative engagement with said lever.
13. A method of reducing foaming in a liquid delivered from a tap having a push/pull type valve, comprising controlling the speed of opening and closing the valve by operatively connecting to the valve activation stem a compressed air driven sliding piston in a chamber and controlling the speed of the piston in the chamber by preselecting the magnitude of one of the pressure of the compressed air and the size of the driving fluid passages into said chamber, and adjusting the other of said pressure or said size to achieve the desired speed.
14. The method of claim 13 comprising preselecting the magnitude of the pressure of the compressed air and thereafter adjusting the size of said driving fluid passages to achieve said desired speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000576597A CA1277303C (en) | 1988-09-06 | 1988-09-06 | Tap controller for liquid delivery line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000576597A CA1277303C (en) | 1988-09-06 | 1988-09-06 | Tap controller for liquid delivery line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1277303C true CA1277303C (en) | 1990-12-04 |
Family
ID=4138683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000576597A Expired - Lifetime CA1277303C (en) | 1988-09-06 | 1988-09-06 | Tap controller for liquid delivery line |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1277303C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11084707B2 (en) | 2019-02-04 | 2021-08-10 | Validfill Llc | Apparatus for controlling flow of beverage |
-
1988
- 1988-09-06 CA CA000576597A patent/CA1277303C/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11084707B2 (en) | 2019-02-04 | 2021-08-10 | Validfill Llc | Apparatus for controlling flow of beverage |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |