US3286724A - Float control means - Google Patents

Float control means Download PDF

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US3286724A
US3286724A US374665A US37466564A US3286724A US 3286724 A US3286724 A US 3286724A US 374665 A US374665 A US 374665A US 37466564 A US37466564 A US 37466564A US 3286724 A US3286724 A US 3286724A
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Prior art keywords
float
housing
control means
valve
bracket
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US374665A
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Frank L Sawyer
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Robert Manufacturing Co
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Robert Manufacturing Co
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    • 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
    • F16K31/18—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float
    • F16K31/20—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float actuating a lift valve
    • F16K31/24—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float actuating a lift valve with a transmission with parts linked together from a single float to a single valve
    • F16K31/26—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float actuating a lift valve with a transmission with parts linked together from a single float to a single valve with the valve guided for rectilinear movement and the float attached to a pivoted arm
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C1/00—Producing ice
    • F25C1/22—Construction of moulds; Filling devices for moulds
    • F25C1/25—Filling devices for moulds
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7287—Liquid level responsive or maintaining systems
    • Y10T137/7358—By float controlled valve
    • Y10T137/7413—Level adjustment or selection means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7287—Liquid level responsive or maintaining systems
    • Y10T137/7358—By float controlled valve
    • Y10T137/7439—Float arm operated valve
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7287—Liquid level responsive or maintaining systems
    • Y10T137/7358—By float controlled valve
    • Y10T137/7439—Float arm operated valve
    • Y10T137/7465—Assembly mounted on and having reciprocating valve element coaxial with inlet pipe

Definitions

  • a float control means which is particularly adapted, but not limited, ⁇ for use in conjunction with ice-making equipment employed in the automatic production of -ice cubes or aked ice.
  • a float control means which utilizes a novelly arranged float housing adapted to be mounted outside the freezing zone of an ice-making machine, and operatively connected therewith to maintain a predetermined level therein.
  • the housing and cover are molded of plastic material and contoured to facilitate maintenance in a sanitary condition, the cover fitting the housing in such a manner that contamination is minimized yet permitting movement of air into and out of the housing as the water level is lowered or raised.
  • FIG. l is a longitudinal, sectional view of the float control means
  • FIG. 2 is an end elevational view taken from 2-2 of FIG. 1;
  • FIG. 3 is a transverse sectional view taken sub-stantially through 3-3 of FIG. l;
  • FIG. 4 is a transverse sectional view taken through 4-4 of FIG. 1.
  • the oat control means includes a rectangular -housing l 1 having side walls 2, end walls 3, and a bottom wall 4, the upper side being open.
  • One corner of the housing 1 is externally recessed as indicated by 5. The recessed corner terminates short of the upper side of the housing 1 to form a shelf 6 from which depends an overow tube 7.
  • the bottom wall 4 is provided with an outlet tube 8.
  • the outlet tube 8 is connected by a supply line A to the container B, as indicated by broken lines in FIG. l, in which the ice is formed. yIn this case the level of water to be maintained in the tioat control means corresponds to the level of the water or ice in the container B.
  • the outlet tube 8 is provided with a removable tubular plug 9.
  • the upper portion of the housing 1 is provided with a peripheral bead 10 which reinforces the open upper side of the housing 1.
  • the end of the housing 1 opposite from the overow tube 7 is provided with a bracket 11 which includes a vertically extending portion 12 terminating in 4a horizontal shelf 13 overlying the housing 1. Except for the side of the shelf 13 joined to the vertical extension 12, the margins of the shelf are provided with an upstanding rim 14.
  • the underside of the shelf 13 is attached to the vertical extension 12 by ribs 15, and portions of the vertical extension 12 as well as the adja- 3,286,724 Patented Nov. 22, 1966 ICC cent portion of the end Wall 3 are increased in thickness.
  • the housing structure thus far described is preferably molded of acryolonitrile-butadiene-styrene polyethylene or other plastic material which has a slight degree of flexibility, and which presents a surface which may readily be maintained in -a sanitary condition.
  • the shelf 13 i-s provided with an aperture which receives a valve body 16 having a head 17 at its lower end.
  • the body 16 is externally screw-threaded to receive a washer 18 and a nut 19 for the purpose of clamping the valve body ,16 firmly to the shelf 13.
  • the upper portion of the valve body is reduced in diameter and provided with screw threads 20 for attachment by a suitable fitting, not shown, to a water supply line.
  • the valve body 16 is provided with an axial bore therethrough constricted to form a valve seat 21. Below the valve seat 21 the bore of the valve body 16 is enlarged to receive a slidable valve pin 22, which is preferably hexagonal in cross section sothat water may flow ⁇ around the valve pin 22 and discharge from the lower end of the valve body 16. The upper end of the valve pin 22 is provided with a valve washer which lengages the valve seat 21.
  • the valve head 17 is provided with a cross slot 23 which receives a control lever 24.
  • the control lever is pivotally secured in the cross slot 23 by a cotter pin 25 which forms a fulcrum.
  • the control lever 24 extends toward the remote end of the housing 1 and is attached to one end of a U-clip 26.
  • the U-clip 26 includes diverging legs 27 which have aligned slots.
  • a float-supporting rod 28 is provided which includes an upwardly extending at portion 29 which extends through the aligned slots in the diverging legs 27.
  • the U-clip 26 functions as a leaf spring so arranged that, when the diverging legs 27 are pressed toward each other, the ilat portion 29 of the float-supporting rod 28 may be adjusted lengthwise, but when the diverging legs 27 are released the at portion 29 is irrnly held in its adjusted position.
  • the float-supporting rod 28 extends downwardly from the flat portion 29 a short distance and then is bent horizontally to form an attachment end 30.
  • a oat 31 is provided, preferably formed of plastic material, and having a reinforced end 32 including a boss 33 having a socket therein which receives the attachment end 30.
  • the attachment end may be provided with serrations, or the like, so that the supporting rod 28 and float 31 may be forced together Without other fastening means.
  • the housing 1 supports a cover 34 having a depending marginal ange 35 covering the side walls 2 and one end Wall 3, and partially covering the remaining end wall of the housing. Internally, the marginal flange 35 and adjacent portions of the cover 34 are provided with thin pads 36 spaced from each other so that vent channels 37 are formed between the housing 1 and the cover 34.
  • the midportion of the cover 34 is raised as indicated by 38 to provide a clearance for the float 31.
  • the cover 34 is provided with an upward extension 39 which embraces the bracket 11 and is provided with a slot 40 to clear the valve body 16.
  • the margins 41 of the slot 40 overlie the marginal rim 14.
  • the cover 34 is likewise formed of plastic material, such as polyethylene, which is slightly flexible and which is readily maintained in a sanitary condition.
  • the cover 34 provides complete dust protection ⁇ for water contained in the housing 1. It does not, however, form a seal. This is of substantial importance, for the vent channels 37 have sufficient cumulative area that, should the overflow tube 7 or the line connected therewith fail to function, water will discharge from the vent channels 37 rather than raising to a level which would permit backilow through the valve body 16.
  • the Water level within the housing 1 may be maintained precisely at the desired level so that the corresponding level of water or ice in the ice-making apparatus may be held Within close limits.
  • the tubular plug creates a sump which collects solid particles that may be carried by the water, yet is removable to flush or clean the sump.
  • lA float control means comprising: (a) a oat housing. having a raised bracket at one end; (b)acover for said housing having a raised portion at onev end partially covering said bracket;
  • a float valve body having an inlet at its upper end and an outlet at its lower end, and a valve element controlling ilow from said inlet;
  • valvefactuating lever pivotally attached to said valveibody and engageable with said valve element, the extended end of said lever being folded to form an integral U-shaped spring.' clip, having a pair of essentially aligned slots;
  • Aoat control means comprising: l
  • outlet tube extending from the bottom of sai-d housing, and a bracket overhanging one end of said housing and disposed above its open side;
  • a float control means comprising:
  • bracket at one end of said housing, including an upstanding portion continuing from an end of said housing, and a shelf overlying and spaced above the upper side of the housing;
  • a cover for said housing including ⁇ a raised portion covering the walls :of said shelf and defining a clearance aperture above said shelf;

Description

Nov. 22, 1966 F. L. sAwYER 3,286,724
FLOAT CONTROL MEANS Filed June 12, 1964 INVENTOR, FRA/VK L SA #v1/2 TTQ/e/Vfys United States Patent O 3,286,724 FLOAT CONTROL MEANS Frank L. Sawyer, Canoga Park, Calif., assignor to Robert Manufacturing Company, Los Angeles, Calif., a corporation of California Filed June 12, 1964, Ser. No. 374,665 3 Claims. (Cl. 137-426) This invention relates to float control means, and included inthe objects of this invention are:
First, to provide a float control means which is particularly adapted, but not limited, `for use in conjunction with ice-making equipment employed in the automatic production of -ice cubes or aked ice.
Second, to provide a float control means which utilizes a novelly arranged float housing adapted to be mounted outside the freezing zone of an ice-making machine, and operatively connected therewith to maintain a predetermined level therein.
Third, to provide a float control means which incorporates a novel arrangement permitting ready adjustment of the float so as to maintain the supply water at precisely the correct level.
Fourth, to provide a float control means wherein the housing and cover are molded of plastic material and contoured to facilitate maintenance in a sanitary condition, the cover fitting the housing in such a manner that contamination is minimized yet permitting movement of air into and out of the housing as the water level is lowered or raised.
With the above and other objects in view, as may appear hereinafter, reference is directed to the accompanying drawings, inwhich:
FIG. l is a longitudinal, sectional view of the float control means;
FIG. 2 is an end elevational view taken from 2-2 of FIG. 1;
FIG. 3 is a transverse sectional view taken sub-stantially through 3-3 of FIG. l;
FIG. 4 is a transverse sectional view taken through 4-4 of FIG. 1.
The oat control means includes a rectangular -housing l 1 having side walls 2, end walls 3, and a bottom wall 4, the upper side being open. One corner of the housing 1 is externally recessed as indicated by 5. The recessed corner terminates short of the upper side of the housing 1 to form a shelf 6 from which depends an overow tube 7.
Near the opposite end of the housing 1 the bottom wall 4 is provided with an outlet tube 8. In the use of the oat control means for supplying water to ice-making equipment, the outlet tube 8 is connected by a supply line A to the container B, as indicated by broken lines in FIG. l, in which the ice is formed. yIn this case the level of water to be maintained in the tioat control means corresponds to the level of the water or ice in the container B. In order that the water will not normally drain fully from the housing 1, the outlet tube 8 is provided with a removable tubular plug 9.
The upper portion of the housing 1 is provided with a peripheral bead 10 which reinforces the open upper side of the housing 1.
The end of the housing 1 opposite from the overow tube 7 is provided with a bracket 11 which includes a vertically extending portion 12 terminating in 4a horizontal shelf 13 overlying the housing 1. Except for the side of the shelf 13 joined to the vertical extension 12, the margins of the shelf are provided with an upstanding rim 14. For reinforcing purposes the underside of the shelf 13 is attached to the vertical extension 12 by ribs 15, and portions of the vertical extension 12 as well as the adja- 3,286,724 Patented Nov. 22, 1966 ICC cent portion of the end Wall 3 are increased in thickness.
The housing structure thus far described is preferably molded of acryolonitrile-butadiene-styrene polyethylene or other plastic material which has a slight degree of flexibility, and which presents a surface which may readily be maintained in -a sanitary condition.
The shelf 13 i-s provided with an aperture which receives a valve body 16 having a head 17 at its lower end. The body 16 is externally screw-threaded to receive a washer 18 and a nut 19 for the purpose of clamping the valve body ,16 firmly to the shelf 13. The upper portion of the valve body is reduced in diameter and provided with screw threads 20 for attachment by a suitable fitting, not shown, to a water supply line.
The valve body 16 is provided with an axial bore therethrough constricted to form a valve seat 21. Below the valve seat 21 the bore of the valve body 16 is enlarged to receive a slidable valve pin 22, which is preferably hexagonal in cross section sothat water may flow `around the valve pin 22 and discharge from the lower end of the valve body 16. The upper end of the valve pin 22 is provided with a valve washer which lengages the valve seat 21.
The valve head 17 is provided with a cross slot 23 which receives a control lever 24. The control lever is pivotally secured in the cross slot 23 by a cotter pin 25 which forms a fulcrum. The control lever 24 extends toward the remote end of the housing 1 and is attached to one end of a U-clip 26.
The U-clip 26 includes diverging legs 27 which have aligned slots. A float-supporting rod 28 is provided which includes an upwardly extending at portion 29 which extends through the aligned slots in the diverging legs 27. The U-clip 26 functions as a leaf spring so arranged that, when the diverging legs 27 are pressed toward each other, the ilat portion 29 of the float-supporting rod 28 may be adjusted lengthwise, but when the diverging legs 27 are released the at portion 29 is irrnly held in its adjusted position.
The float-supporting rod 28 extends downwardly from the flat portion 29 a short distance and then is bent horizontally to form an attachment end 30. A oat 31 is provided, preferably formed of plastic material, and having a reinforced end 32 including a boss 33 having a socket therein which receives the attachment end 30. The attachment end may be provided with serrations, or the like, so that the supporting rod 28 and float 31 may be forced together Without other fastening means.
The housing 1 supports a cover 34 having a depending marginal ange 35 covering the side walls 2 and one end Wall 3, and partially covering the remaining end wall of the housing. Internally, the marginal flange 35 and adjacent portions of the cover 34 are provided with thin pads 36 spaced from each other so that vent channels 37 are formed between the housing 1 and the cover 34.
The midportion of the cover 34 is raised as indicated by 38 to provide a clearance for the float 31. In addition, the cover 34 is provided with an upward extension 39 which embraces the bracket 11 and is provided with a slot 40 to clear the valve body 16. The margins 41 of the slot 40 overlie the marginal rim 14.
The cover 34 is likewise formed of plastic material, such as polyethylene, which is slightly flexible and which is readily maintained in a sanitary condition.
It will be noted that the cover 34 provides complete dust protection `for water contained in the housing 1. It does not, however, form a seal. This is of substantial importance, for the vent channels 37 have sufficient cumulative area that, should the overflow tube 7 or the line connected therewith fail to function, water will discharge from the vent channels 37 rather than raising to a level which would permit backilow through the valve body 16.
By reason of the fact that the float-supporting rod 28 may be readily adjusted with respect to the control lever 24, the Water level within the housing 1 may be maintained precisely at the desired level so that the corresponding level of water or ice in the ice-making apparatus may be held Within close limits.
A The tubular plug creates a sump which collects solid particles that may be carried by the water, yet is removable to flush or clean the sump.
While av particular embodiment of this invention has been shown and described, it is not intended to limit the same to the exact details of the construction set forth, and it embraces such changes, modications and equivalents of the parts and their formation and arrangement as come` within the purview of the appended claims.
What is claimed is: 1. lA float control means, comprising: (a) a oat housing. having a raised bracket at one end; (b)acover for said housing having a raised portion at onev end partially covering said bracket;
' (c) a float valve body having an inlet at its upper end and an outlet at its lower end, and a valve element controlling ilow from said inlet;
(d) a valvefactuating lever pivotally attached to said valveibody and engageable with said valve element, the extended end of said lever being folded to form an integral U-shaped spring.' clip, having a pair of essentially aligned slots;
(e) a` H'oat arm having a`portion frictionally slidable in said slots thereby Yto effect vertical adjustment of lsaid oat arm;
(f) `and 'a float carried by said arm.
2. Aoat control means, comprising: l
(a) an essentially rectangular oat housing open at its upper side and having a re-entrant corner forming an upwardly exposed shelf near said upper side, an overow tube piercing said shelf depending from said shelf, saiduoverow.. tube being `accessible for cleaning' from the upper surface of `said shelf, an
outlet tube extending from the bottom of sai-d housing, and a bracket overhanging one end of said housing and disposed above its open side;
(b) a cover for said housing having a raised portion at one end partially covering said bracket;
(c) a float valve mounted on said bracket and having an inlet at its upper end and a downwardly -directed discharge end to discharge water into said float housing;
(d) a oat disposed in said housing;
(e) and operating means connecting said iloat and float valve.
3. A float control means, comprising:
(a) an essentially rectangular iloat housing, open at its upper side;
(b) a bracket at one end of said housing, including an upstanding portion continuing from an end of said housing, and a shelf overlying and spaced above the upper side of the housing;
(c) integral upstanding walls bordering said shelf except in the region of the upstanding portion of the said bracket whereby moisture collected on said shelf drains over said bracket and outside said oat housing;
(d) a cover for said housing, including `a raised portion covering the walls :of said shelf and defining a clearance aperture above said shelf;
(e) a iioat valve mounted on and projecting through said shelf;
(f) and a float disposed in said housing and connected to said float valve.
References Cited by the Examiner UNITED STATES PATENTS WILLIAM F. ODEA, Primary Examiner. D. MATTHEWS, Assistant Examiner.

Claims (1)

1. A FLOAT CONTROL MEANS, COMPRISING: (A) A FLOAT HOUSING HAVING A RAISED BRACKET AT ONE END; (B) A COVER FOR SAID HOUSING HAVING A RAISED PORTION AT ONE END PARTIALLY COVERING SAID BRACKET; (C) A FLOAT VALVE BODY HAVING AN INLET AT ITS UPPER END AND AN OUTLET AT ITS LOWER END, AN A VALVE ELEMENT CONTROLLING FLOW FROM SAID INLET; (D) A VALVE-ACTUATING LEVER PIVOTALLY ATTACHED TO SAID VALVE BODY AND ENGAGEABLE WITH SAID VALVE ELEMENT, THE EXTENDED END OF SAID LEVER BEING FOLDED TO FORM AN INTEGRAL U-SHAPED SPRING CLIP, HAVING A PAIR OF ESSENTIALLY ALIGNED SLOTS; (E) A FLOAT ARM HAVING A PORTION FRICTIONALLY SLIDABLE IN SAID SLOTS THEREBY TO EFFECT VERTICAL ADJUSTMENT OF SAID FLOAT ARM; (F) AND A FLOAT CARRIED BY SAID ARM.
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3450103A (en) * 1967-08-18 1969-06-17 Poly Matic Fountain Inc Automatic poultry drinker
US3450102A (en) * 1967-07-17 1969-06-17 Poly Matic Fountain Inc Automatic poultry drinker
US3759228A (en) * 1971-12-20 1973-09-18 R Keen Pet watering apparatus
US3970101A (en) * 1975-03-17 1976-07-20 Dare Products, Incorporated Float controlled valve assembly
US4064895A (en) * 1976-08-12 1977-12-27 Arrow-Acme Corporation Non-siphoning float controlled valve assembly
US4729400A (en) * 1986-03-17 1988-03-08 Robert Manufacturing Company Liquid control assembly
US5003928A (en) * 1989-11-13 1991-04-02 Ketterlin William S Freeze resistant animal watering installation
US5052343A (en) * 1989-06-05 1991-10-01 Larry Sushelnitski Cattle water drinking entice
US20050150464A1 (en) * 2001-11-02 2005-07-14 Egon Schumacher Drinking trough with elongated actuator and method of dispensing water therefrom
US20060261178A1 (en) * 2005-05-19 2006-11-23 Scribner James R Device to adjust and control water levels

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2557042A (en) * 1946-03-04 1951-06-12 William J Woolley Porous sheet evaporator type humidifier for hot-air furnaces and mounting means therefor
US2703099A (en) * 1953-05-25 1955-03-01 Automatic Poultry Feeder Compa Poultry waterer control
US2716331A (en) * 1950-12-16 1955-08-30 Lessard Lees Inc Chip-ice machine
US2911000A (en) * 1956-09-04 1959-11-03 Orville K Doyle Flush tank valve
US2988048A (en) * 1959-02-13 1961-06-13 Harvey M Zimmerman Poultry waterer
US3112762A (en) * 1960-03-31 1963-12-03 Abraham I Reitman Receptacle-operated supply valve

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2557042A (en) * 1946-03-04 1951-06-12 William J Woolley Porous sheet evaporator type humidifier for hot-air furnaces and mounting means therefor
US2716331A (en) * 1950-12-16 1955-08-30 Lessard Lees Inc Chip-ice machine
US2703099A (en) * 1953-05-25 1955-03-01 Automatic Poultry Feeder Compa Poultry waterer control
US2911000A (en) * 1956-09-04 1959-11-03 Orville K Doyle Flush tank valve
US2988048A (en) * 1959-02-13 1961-06-13 Harvey M Zimmerman Poultry waterer
US3112762A (en) * 1960-03-31 1963-12-03 Abraham I Reitman Receptacle-operated supply valve

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3450102A (en) * 1967-07-17 1969-06-17 Poly Matic Fountain Inc Automatic poultry drinker
US3450103A (en) * 1967-08-18 1969-06-17 Poly Matic Fountain Inc Automatic poultry drinker
US3759228A (en) * 1971-12-20 1973-09-18 R Keen Pet watering apparatus
US3970101A (en) * 1975-03-17 1976-07-20 Dare Products, Incorporated Float controlled valve assembly
US4064895A (en) * 1976-08-12 1977-12-27 Arrow-Acme Corporation Non-siphoning float controlled valve assembly
US4729400A (en) * 1986-03-17 1988-03-08 Robert Manufacturing Company Liquid control assembly
US5052343A (en) * 1989-06-05 1991-10-01 Larry Sushelnitski Cattle water drinking entice
US5003928A (en) * 1989-11-13 1991-04-02 Ketterlin William S Freeze resistant animal watering installation
US20050150464A1 (en) * 2001-11-02 2005-07-14 Egon Schumacher Drinking trough with elongated actuator and method of dispensing water therefrom
US7243611B2 (en) * 2001-11-02 2007-07-17 Lubing Maschinenfabrik Ludwig Drinking trough with elongated actuator and method of dispensing water therefrom
US20060261178A1 (en) * 2005-05-19 2006-11-23 Scribner James R Device to adjust and control water levels
US7520296B2 (en) * 2005-05-19 2009-04-21 Scribner James R Device to adjust and control water levels

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