Flexible Valve Patents (Class 137/451)
  • Patent number: 8826934
    Abstract: An apparatus for preventing backflow of a fill valve in a water toilet. The apparatus includes a fill valve for permitting and stopping supply of washing water from a hydrant into a water tank, a fixing section fixing the fill valve to an overflow pipe, a float having a packing for opening or closing an opening/closing hole of the fill valve depending on a level of water contained in the water tank, and a backflow-preventing section disposed inside the fill valve. The backflow-preventing section permits washing water to be supplied from the hydrant into the water tank, and prevents washing water from flowing back toward the hydrant. The backflow-preventing section includes a backflow-preventing member mounted to a supply pipe of the fill valve, and an operation control valve seated on a fitting protrusion of the fill valve to control an operation of the backflow-preventing member.
    Type: Grant
    Filed: January 11, 2010
    Date of Patent: September 9, 2014
    Assignee: Watos Corea Co., Ltd.
    Inventor: Tae Gwang Song
  • Patent number: 8580013
    Abstract: An air dryer cartridge is provided for a compressed air supply system, in particular a compressed air supply system of a commercial vehicle, with a drying agent box which is filled with a drying agent. The drying agent box can be coupled in an axial direction to a connecting flange of the compressed air supply system. A seal, which is designed as a non-return valve and, in the fitted state of the air dryer cartridge, acts in a sealing manner between the drying agent box and the connecting flange, is arranged on the drying agent box. A method for operating the air dryer cartridge on the compressed air supply system is also provided.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: November 12, 2013
    Assignee: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH
    Inventor: Eduard Hilberer
  • Patent number: 8276610
    Abstract: A toilet cistern inlet valve, said inlet valve including an inlet stem connected to a water supply, a canister surrounding said inlet stem, a float canister freely supported on said canister, an annular float adjustably positioned on said float canister, an upper valve body, a pilot diaphragm valve, and a diaphragm filling valve within the upper body whereby during the emptying of the cistern the float canister lowers and contacts an actuator button to contact the pilot diaphragm valve to open the diaphragm filling valve to refill the toilet cistern.
    Type: Grant
    Filed: March 26, 2008
    Date of Patent: October 2, 2012
    Assignee: Super Star Toilet System Pty Ltd of RSM of Bird Cameron
    Inventor: Peter Henry Broughman
  • Patent number: 8186376
    Abstract: A liquid purge valve comprising a housing for sealingly fitting at an uppermost end of a substantially vertical pipe, an outlet tube extending from the housing and projecting into the pipe, an outlet port fitted with a sealing boundary and sealable by a sealing member pivotally secured within the housing so as to pivotally displace between a closed and an open position, a biasing member biasing the sealing member into its open position, and a mass articulated to the sealing member and extending downwards into the pipe. The mass applies a force at an opposite direction of the biasing member such that the resultant force acting on the sealing member determines its position such that when water level rises within the pipe the sealing member displaces into the open position.
    Type: Grant
    Filed: July 19, 2007
    Date of Patent: May 29, 2012
    Assignee: A.R.I. Flow Control Accessories Ltd.
    Inventor: Meir Shuval
  • Patent number: 8168136
    Abstract: A fluid-conveying apparatus conveys fluid using a channel for the fluid to flow. The apparatus includes a pressure-generating device for generating pressure for conveying the fluid, a plurality of processing areas for processing the fluid, a valve which is disposed between the processing areas and controls the fluid flow, and a pressure-relieving device for relieving the pressure in the channel.
    Type: Grant
    Filed: November 23, 2005
    Date of Patent: May 1, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takahiro Ezaki, Takeo Yamazaki
  • Patent number: 6962163
    Abstract: A liquid level control apparatus for a flush tank includes a valve mechanism communicating with a fill tube and operable between open and closed conditions, two floats, at least one of which is coupled to the valve mechanism for closing it when the at least one float reaches a predetermined height, and structure interconnecting the floats so as to substantially prevent their vertical movement until a predetermined liquid level is reached corresponding to the predetermined height, thereby causing sudden movement of the at least one float to the predetermined height and sudden closing of the valve.
    Type: Grant
    Filed: September 13, 2004
    Date of Patent: November 8, 2005
    Assignee: George S. Cole & Associates, Incorporated
    Inventor: Harry W. Edwards
  • Patent number: 6192920
    Abstract: A valve for maintaining a given level of liquid in a tank, reservoir, or other container having a liquid-gas interface. Said valve being actuated by a float that rises and falls along with the liquid in the container. Said valve float actuates a series of valves in sequence wherein the higher the float rises, the more valve ports are opened allowing a higher flow rate through the valve.
    Type: Grant
    Filed: February 8, 2000
    Date of Patent: February 27, 2001
    Inventor: Lance W. Hellerman
  • Patent number: 6189857
    Abstract: A fluid-actuated squeeze valve is provided for use where leak-tight operation and/or very rapid valve closure characteristics are required. The valve comprises an annular valve body with a generally cylindrical open-ended bore for receiving the frusto-conical end portions of two, axially aligned, opposed end plugs. An annular clearance is provided between the end portions and the bore wall for receiving an elastomeric sleeve. Each end plug is provided with an axially extending bore for passage of process fluid which communicates with angled passageways extending from the bore to the slant surface of a respective frusto-conical end portion. The smaller truncated end surfaces of the two opposed end portions are spaced apart axially to define a narrow gap therebetween. Fluid pressure is exerted through an access port in the valve body to actuate the valve by causing the elastomeric sleeve to press against the end portions. Means for operating the valve in response to system pressure parameters are described.
    Type: Grant
    Filed: April 13, 1971
    Date of Patent: February 20, 2001
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Leroy Zeger, Edward R. Promin
  • Patent number: 6182306
    Abstract: A toilet fill valve includes an outlet pipe associated with a wash basin, an outlet tube associated with a wet-bowl configuration and an outlet assembly for filling the tank of the toilet. A blocking device includes a first plug for blocking the pipe in the absence of a wash basin, and a second plug for blocking the outlet tube in the absence of a wet-bowl configuration. An outlet assembly includes a deflector for directing water against a side wall of the tank, and an aerator for adding turbulence to the water in order to minimize noise associated with filling the tank with water.
    Type: Grant
    Filed: September 9, 1998
    Date of Patent: February 6, 2001
    Assignee: Fluidmaster, Inc.
    Inventor: Joseph U. Han
  • Patent number: 6164313
    Abstract: A float operated valve for controlling the rate of flow of water from a pipe carrying water under pressure, to a vessel, comprises a pipe having an end opening of selected diameter and a flange of larger diameter surrounding the pipe. A flexible diaphragm is attached over the flange having a central closure pad adapted to cut off water flow when pressed against the pipe. A small orifice is drilled through the diaphragm so that when the flow is shut off, water can still flow through the orifice to the second side of the diaphragm. A second short pipe having a similar flange is bolted against the diaphragm to the first flange, to provide a water tight seal. There is a second small orifice in the second end of the second pipe, and a float mechanism is provided with a closure tip to close the second orifice when the water level is at a selected value. The closure tip varies the size of the second orifice so that the orifice is responsive to the float.
    Type: Grant
    Filed: November 30, 1998
    Date of Patent: December 26, 2000
    Inventor: William R. Walters
  • Patent number: 6123099
    Abstract: A liquid level control apparatus for a flush tank includes an upstanding fill tube integral at its upper end with a valve housing carrying a flexible resilient pinch tube valve member. The valve housing defines a conduit which communicates with a downwardly extending tube parallel to the fill tube. A float has portions respectively receiving the fill tube and the downwardly extending tube therethrough so that the float slides vertically along the tubes as the water level in the tank varies. In one embodiment, an actuator rib on the float fits in a slot in the housing to directly engage the pinch tube valve member, and in another embodiment an actuator pivots on the housing and is coupled by linkage to the float. In the one embodiment an arresting flange on a resilient portion of the float engages an arresting flange on the fill tube for arresting upward movement of the float until the tank is full to provide a snap-action shutoff of the valve.
    Type: Grant
    Filed: January 19, 1999
    Date of Patent: September 26, 2000
    Assignee: George S. Cole & Associates, Incorporated
    Inventor: Harry W. Edwards
  • Patent number: 6109294
    Abstract: A leak preventing detent apparatus for a toilet flush valve assembly in which an inlet valve (13) to a toilet flush tank (11) is controlled by an inlet valve control device (14, 14a, 16, 17), and an outlet flush valve (21) is controlled by a flush lever (919). The detent apparatus includes a follower member (28) that is moved in response to movement of the flush lever at the initiation of a flush cycle, and a detent (25) that is operative to prevent opening of an inlet valve (26) except when a flush cycle is deliberately initiated. In a preferred form of the invention, a primary inlet valve (26) is provided upstream of the usual inlet valve (13) that is controlled by an inlet valve control device, such as a float (14, 14a, 16, 17), and the detent apparatus effectively cooperates with the primary inlet valve to maintain it closed unless a flush cycle is deliberately initiated. The detent member may be hydraulically damped (37-42) to provide a timed delay of its movement into the inlet valve closing position.
    Type: Grant
    Filed: September 1, 1998
    Date of Patent: August 29, 2000
    Inventors: Lamar R. Ray, Ronald Smelkinson
  • Patent number: 5950666
    Abstract: A leak preventing detent apparatus for a toilet flush valve assembly in which an inlet valve (13) to a toilet flush tank (11) is controlled by an inlet valve control device (14, 14a, 16, 17), and an outlet flush valve (21) is controlled by a flush lever (19). The detent apparatus includes a follower member (28) that is moved in response to movement of the flush lever at the initiation of a flush cycle, and a detent (25) that is operative to prevent opening of an inlet valve (26) except when a flush cycle is deliberately initiated. In a preferred form of the invention, a primary inlet valve (26) is provided upstream of the usual inlet valve (13) that is controlled by an inlet valve control device, such as a float (14, 14a, 16, 17), and the detent apparatus effectively cooperates with the primary inlet valve to maintain it closed unless a flush cycle is deliberately initiated. The detent member may be hydraulically damped (37-42) to provide a timed delay of its movement into inlet valve closing position.
    Type: Grant
    Filed: May 1, 1998
    Date of Patent: September 14, 1999
    Inventors: Lamar R. Ray, Ronald Smelkinson
  • Patent number: 5896887
    Abstract: A liquid level control apparatus for a flush tank includes an upstanding fill tube integral at its upper end with a valve housing carrying a flexible resilient pinch tube valve member and a pivoting actuator engageable with the pinch tube for opening and closing the valve. The valve housing is fixed to a head member defining a conduit which communicates with a downwardly extending tube parallel to the fill tube. A float has cylindrical portions respectively receiving the fill tube and the downwardly extending tube therethrough so that the float can slide upwardly and downwardly along the tubes as the water level in the tank varies. The actuator is pivotally connected to a linkage which extends outwardly through an aperture in the float and is pivotally connected to the float externally thereof. In one embodiment the aperture defines cam surfaces which engage the linkage to operate the actuator.
    Type: Grant
    Filed: May 8, 1998
    Date of Patent: April 27, 1999
    Assignee: George S. Cole & Associates, Incorporated
    Inventor: Harry W. Edwards
  • Patent number: 5775366
    Abstract: A leak preventing detent apparatus for a toilet flush valve assembly in which an inlet valve to a toilet flush tank is controlled by an inlet valve control device, and an outlet flush valve is controlled by a flush lever. The detent apparatus includes a follower member that is moved in response to movement of the flush lever at the initiation of a flush cycle, and a detent that is operative to prevent opening of an inlet valve except when a flush cycle is deliberately initiated. In a preferred embodiment, the detent member acts directly on the inlet valve to maintain it closed until a flush cycle is deliberately initiated. The detent member may be hydraulically damped to provide a timed delay of its movement into inlet valve closing position.
    Type: Grant
    Filed: February 14, 1997
    Date of Patent: July 7, 1998
    Inventors: Lamar R. Ray, Ronald Smelkinson
  • Patent number: 5722961
    Abstract: Disclosed is a flow control device for use with an intravenous set to control the flow of medicinal fluid in a barrel into patient's body. The flow control device comprises a floating member capable of being supported for floating by the buoyancy of the medicinal fluid and having a first hollowed portion facing upwards so that the hollowed portion can contain medicinal fluid and a second hollowed portion facing downwards. A linkage bar is secured to the floating member by insertion into the second hollowed portion. A membranous member is coupled via the linkage bar to the floating member such that the membranous member moves along with the floating member.
    Type: Grant
    Filed: July 12, 1995
    Date of Patent: March 3, 1998
    Assignee: King-He Hung
    Inventor: Cheng-Kuo Fan
  • Patent number: 5522179
    Abstract: An automatic water level control system, for use in conjunction with a Christmas tree stand of the type having a watering basin with an outer rim and a tree clamping mechanism for holding the Christmas tree in an upright manner with the base portion of the tree disposed within the watering basin. The water level control system includes a water supply container, a flexible conduit, an attachment mechanism, and a valve mechanism. The water supply container serves as a holding tank for water which is supplied to the watering basin of the Christmas tree stand via the flexible conduit. The water level in the watering basin is regulated by the valve mechanism attached to the Christmas tree stand. The attachment mechanism has a main body and is attachable to the outer rim of the watering basin in a manner to functionally secure the main body to the Christmas tree stand. The valve mechanism includes a watering port, a valve, and a float member.
    Type: Grant
    Filed: March 23, 1995
    Date of Patent: June 4, 1996
    Inventor: Peter R. Hollis
  • Patent number: 5090443
    Abstract: A valve for controlling the level of fluids in basins, such as stands for cut trees, aquariums, or hydroponic plant basins. The valve 6 includes a rigid fluid conduit 26 passing through the wall of a float chamber 16, in order to transmit fluid into a flexible tubing 28 connected to the portion of the rigid fluid conduit 26 inside the float chamber 16. In the valve's open position, the flexible tubing 28 is maintained in a partially bent postion, riding on the upper end of a float 30 contained within the float chamber 16. As the fluid enters the float chamber 16, and exits into basin 8, the fluid level rises causing the float 30 to rise in float chamber 16. The rising float further bends the flexible tubing 28, causing it to collapse and block the flow of fluid therethrough. As the fluid in basin 8 falls, the flexible tubing 28 returns to its original position, and the flow of fluid through the valve resumes.
    Type: Grant
    Filed: July 24, 1991
    Date of Patent: February 25, 1992
    Inventor: Paul S. Jacobsen
  • Patent number: 5042526
    Abstract: A toilet flush mechanism comprising a tank holding a water supply and having a valve for flushing a toilet bowl a handle for opening the valve to the toilet bowl for initiating the flushing actions, a water supply entering the tank near the bottom of said tank, for replacing the water in the tank including a flexible tube connected to the supply the extending into the tank, said tube having a first curved portion for carrying the water into the tank, a second bendable portion for controlling the flow of water into the tank and a third extended portion for supplying the flow of water into the tank, and a blout and rod responsive to the water level in the tank for flexing said tube to control water flow into the tank which rises and falls with the water supply level, the rod extending along and being independent of the third portion of said tube, the rod being connected at the other end to the second portion of the tube adjacent the bendable portion thereof for bending said tube in response to movement of said
    Type: Grant
    Filed: June 30, 1986
    Date of Patent: August 27, 1991
    Inventor: Alexander E. Kulakoff
  • Patent number: 5020567
    Abstract: A valve is installed into an underground conduit to control drainage of water through that conduit. The drainage control valve includes a perforated plate across the conduit. The latter plate is formed with a peripheral groove rectangular in cross section and a hollow tube made of flexible material is inserted into this groove to seal the joint between the plate and the inner surface of the conduit. A flap also made of flexible material is applied against the upstream surface of the plate and is formed with a peripheral edge taper whereby pressure applied on the flap by water upstream of the drainage valve forces the edge taper against the upstream plate surface to form a sealed joint between these flap and plate. The upper portion of the flap is attached to the upper portion of the plate through screw and nut assemblies. These assemblies traverse rigid washers inserted in respective holes made in the flap.
    Type: Grant
    Filed: September 26, 1990
    Date of Patent: June 4, 1991
    Assignee: Innotag Inc.
    Inventor: Serge L. Proulx
  • Patent number: 4913140
    Abstract: A humidifier for humidifying gases flowing from a source to a person, e.g. a patient breathing apparatus, has a gas chamber interconnected with a water compartment and at least one float controlled valve which controls the flow of water into the water compartment so that if the level of water in the gas chamber exceeds a predetermined level, flow of water to the water compartment is prevented. A further float controlled valve may be provided to prevent flow of water from the water compartment to the gas chamber when the water level in the gas chamber exceeds the predetermined, or a further predetermined, level.
    Type: Grant
    Filed: August 17, 1988
    Date of Patent: April 3, 1990
    Assignee: Fisher & Paykel Limited
    Inventors: Ilija Orec, Erwin J. Meyer
  • Patent number: 4812265
    Abstract: A preassembled carburetor valve of the general type shown and described in U.S. Pat. No. 3,454,036 has a floating disc-type valve without an encircling metal rim. The hollow body is provided with oppositely disposed "cathedral window" openings. The valve body, including the valve seat and the cathedral windows, is die cast.
    Type: Grant
    Filed: December 10, 1987
    Date of Patent: March 14, 1989
    Assignee: Tomco, Inc.
    Inventor: Michael J. Wolfe
  • Patent number: 4709721
    Abstract: An improved ballcock assembly for a toilet water reservoir which provides quiet reservoir refill operation without requiring a conventional water discharge hush tube. Quiet refill operation is provided by discharging refill water through a plurality of openings which create individual streams of water which flow along the side surfaces of a standpipe having longitudinally extending external ridges or walls. The walls maintain the separation of the individual water streams which cascade down the standpipe surface. The outside surface of the standpipe is preferably tapered outwardly from top to bottom so that the water flows along a tapered surface which reinforces the cascading flow regime. The reduced flow for each stream and the cascading flow action combine to provide quiet refill operation. Since the ballcock assembly refill openings are above reservoir tank water level, water normally cannot be sucked through them and into the water supply system.
    Type: Grant
    Filed: March 18, 1987
    Date of Patent: December 1, 1987
    Assignee: Johnson Service Company
    Inventor: Larry D. Gish
  • Patent number: 4621945
    Abstract: In association with a subsurface drainage/irrigation tile system, a head control stand is provided to selectively control the flow of water through a drainage/irrigation tile system and in turn control the depth of the water table. An actuating unit which includes a water level sensor floating on the surface of the water table is disposed within a riser pipe which extends upward from a subsurface drainage tile. A valve disposed within the drainage tile is connected to the water level sensor and opens upon the sensor raising in response to a raising in the water table which allows water to flow through the valve and subsequently closes the valve upon lowering of the water table.
    Type: Grant
    Filed: January 11, 1985
    Date of Patent: November 11, 1986
    Inventors: Christopher E. Schafer, William P. Schafer, Charles J. Schafer
  • Patent number: 4529002
    Abstract: A pilot-operated ball cock valve of the type wherein a vent to a pressure chamber is controlled by a lever arm to thereby control the flow of fluid through the valve. A movable rod is slidable in aligned relief and pilot conduit openings and has a valve sealing element carried on the rod. The valve sealing element is adapted to seal off the relief opening in one position of the rod and to open the relief opening in another position of the rod. Further, the sealing element is adapted to close off the pilot conduit between the pressure chamber and the inlet opening when the rod is in the other position. The valve is advantageously formed in two pieces which screw together through a threaded core. The float on the arm has a hole in an outer portion thereof and is rotatably mounted on the arm to adjust the buoyancy of the float and thereby adjust the height to which the arm will rise in the tank.
    Type: Grant
    Filed: August 1, 1984
    Date of Patent: July 16, 1985
    Assignee: Adac Plastics, Inc.
    Inventor: Edwin B. Jacobson
  • Patent number: 4527584
    Abstract: The condensation discharger comprises a tank (1) including a float (8) and an elastic cut-off blade (14) the blades of which being connected in such a way to the forked arm (6) of the float (8) that the discharge orifice is opened when the float is moved beyond a certain level.
    Type: Grant
    Filed: July 16, 1982
    Date of Patent: July 9, 1985
    Assignee: Hiross International Corp., S.A.
    Inventor: Allan S. Miller
  • Patent number: 4509692
    Abstract: A drip and trickle irrigator independent of the pressure of the water supply. The drip irrigator has an inlet with a variable-orifice to control the fluid flow into a chamber. A float within the chamber coupled to the variable orifice in order to vary the cross-sectional area of the orifice upon variation of the head of fluid within the chamber. An outlet inside the chamber such that the pressure of the fluid head determines the pressure at the outlet independent of the supply pressure.
    Type: Grant
    Filed: June 7, 1983
    Date of Patent: April 9, 1985
    Inventor: Lionel V. Moss
  • Patent number: 4448213
    Abstract: A float valve in this invention has a hollow body having a spigot adjacent an orifice, a valve seat surrounding the orifice, a float arm pivoted to the hollow body, and an abutment surface on the float arm engageable against an elastomeric valve member when carried by the spigot.
    Type: Grant
    Filed: March 28, 1983
    Date of Patent: May 15, 1984
    Assignee: F. F. Seeley Nominees Pty. Ltd.
    Inventor: Frederic F. Seeley
  • Patent number: 4431025
    Abstract: There is disclosed a float-responsive valve of the type used in cisterns. Lost motion connection means are provided between the float and the valve, so that in the event of a drop of water pressure in the line supplying the valve, a resilient means overrides the action of the float to seat the valve and prevent siphoning of water from the system back into the water supply system. The construction is simple, using a minimal number of parts, and is easily maintained.
    Type: Grant
    Filed: January 21, 1982
    Date of Patent: February 14, 1984
    Inventor: Lawrence H. Edwards
  • Patent number: 4352371
    Abstract: A float operated valve for controlling the rate of flow of water from a pipe carrying water under pressure, to a vessel, comprises a pipe having an end opening of selected diameter and a flange of larger diameter surrounding the pipe. A flexible diaphragm is attached over the flange having a central closure pad adapted to cut off water flow when pressed against the pipe. A small orifice is drilled through the diaphragm so that when the flow is shut off, water can still flow through the orifice to the second side of the diaphragm. A second short pipe having a similar flange is bolted against the diaphragm to the first flange, to provide a water tight seal. There is a second small orifice in the second end of the second pipe, and a float mechanism is provided with a closure tip to close the second orifice when the water level is at a selected value. The closure tip provided can vary the size of the second orifice so that as soon as it is opened, the orifice size is a minimum.
    Type: Grant
    Filed: April 8, 1980
    Date of Patent: October 5, 1982
    Inventor: William R. Walters
  • Patent number: 4318421
    Abstract: A float controlled valve syphons water out of a swimming pool cover. The syphon valve includes co-operable male and female valve members disposed for mutually relative movement to bring them into and out of mutual engagement to thereby close and open flow communication through a syphon discharge passage formed in the male member. A float body is coupled to one of the said members for effecting the engagement and disengagement in response to the level of the water in the swimming pool cover. The male valve member is tapered at the forward end to facilitate engagement with a central recess in the female member. The female member is formed of more yielding material than the male member and has a thin walled portion receiving the male member and of sufficient flexibility to envelop dirt particles at the male-female member seal.
    Type: Grant
    Filed: July 14, 1980
    Date of Patent: March 9, 1982
    Inventor: Geoffrey A. Ward
  • Patent number: 4306580
    Abstract: An overflow return tank, especially for receiving return fuel at internal combustion engines with fuel gauge, comprising a receptacle (20, 21, 22) with an inlet (23) located upwardly for a return flow and an outlet (25) and an air bleed hole (24), and with a float (30) located within the receptacle for controlling a valve (26, 36, 31a) located at the outlet of the receptacle. The valve comprises a soft, elastic diaphragm (36), which is connected to the float (30) and upon lifting of the float gradually exposes the outlet (25) by being bent, so that fuel can be taken out from the overflow return tank. Owing to the design of the valve only a small lifting force from the float is required, whereby the fuel amount in the overflow return tank can be maintained substantially constant even at great variations in the return flow. The overflow return tank, besides, can be given small dimensions.
    Type: Grant
    Filed: August 22, 1979
    Date of Patent: December 22, 1981
    Assignee: Haldex AB
    Inventors: Sven Wallquist, Rune Sund
  • Patent number: 4286618
    Abstract: A water control valve particularly suited for use with poultry watering apparatus having a deformable rubber sleeve lining the interior of the valve housing. A pair of piston members are arranged to pinch the sleeve and thus cut off the flow through the valve in response to a cross member attached to a control lever alternately urging each of the pistons into the housing.
    Type: Grant
    Filed: May 9, 1980
    Date of Patent: September 1, 1981
    Assignee: Korus, Inc.
    Inventors: Chang Bang, Scott Row
  • Patent number: 4186764
    Abstract: A valve is provided for controlling fluid flow between the inlet and outlet of a closed valve housing. A stationary insert body in the housing includes a through channel with cross channels extending transversely therefrom. The latter open on the inner side of an expansible U-shaped ring which surrounds the periphery of the insert body and is spaced from the wall of the valve housing. A piston is movable to close the outlet of the through channel so as to increase the pressure in the cross channels and cause expansion of the ring to close off the passage around the insert body between the inlet and outlet.
    Type: Grant
    Filed: July 22, 1977
    Date of Patent: February 5, 1980
    Assignee: Ole Gunnar Selvaag
    Inventors: Odd Ottersen, Egil S. Solvang, Endre Rosjo
  • Patent number: 4122862
    Abstract: An extendible ballcock assembly including a support pipe threaded at its lower end for partial receipt in a support fitting.The support fitting furthermore includes a peripheral cavity in the upper end thereof adapted to receive a toroidal seal. The seal includes a threaded interior surface conformed to the support pipe threads and is compressed into the fitting by a compression nut. At the upper end the support pipe terminates in a valve assembly which includes antisiphoning provisions.
    Type: Grant
    Filed: April 12, 1976
    Date of Patent: October 31, 1978
    Inventor: Anthony R. Brandelli
  • Patent number: 4114642
    Abstract: Most valve assemblies used in water closet tanks are relatively bulky and often interfere with the operative action of the tank. Furthermore, such valve assemblies are noisy in operation and "wire drawing" effects cause considerable wear of the valve seat and/or valve. This device includes a flexible diaphragm engageable with an annular valve seat and acting as a valve between the water intake and the interior of the tank. A spherical segment cam is mounted in the assembly operatively connected to a float and connecting rod moving reciprocally. The cam operates a plug sliding reciprocally in the body of the valve assembly, said plug engaging the diaphragm and controlling the opening and closing of the diaphragm with the valve seat. The mechanical advantage of the spherical segment cam gives a positive closing action plug minimizing the "wire drawing" effect and the construction of the diaphragm and associated parts eliminates thumping and hissing during the closing action.
    Type: Grant
    Filed: February 2, 1977
    Date of Patent: September 19, 1978
    Inventor: Robert Ralph Robbins
  • Patent number: 4082106
    Abstract: An air eliminator valve for automatically collecting and venting air and other gases included in flowing liquid. The valve has a chamber in which air collects, a float in the chamber and a vent valve at the top operated by the float to vent the chamber when the liquid level falls. The vent valve has a convex or concave seat with apertures therein and is sealed by a flexible diaphragm which is peeled progressively from the seat to open the valve. The diaphragm may be annular and fixed at its outer periphery, being flexed by a coupling at its center, or may be fixed at the center and flexed by a coupling at its periphery.
    Type: Grant
    Filed: March 31, 1976
    Date of Patent: April 4, 1978
    Assignee: Dresser Europe S. A.
    Inventor: Alan George Butcher
  • Patent number: 4034026
    Abstract: A fuel carburetor structure is shown having a main fuel bowl or reservoir with a second fuel reservoir therein; a fuel inlet valve assembly for controlling the rate of fuel flow to both the main and second or auxiliary reservoirs is shown as having a needle-like inlet valve positioned by a float carried within the main reservoir and responsive to the level of the fuel contained therein; additional valving means resiliently resists the flow of fuel into the main reservoir and the degree of such resilient resistance is reflective of the degree to which the needle-like inlet valve has been moved toward its fully closed position; the additional valving means also serves to cause a flow of fuel from the needle-like inlet valve to the auxiliary reservoir via related conduit means.
    Type: Grant
    Filed: April 30, 1976
    Date of Patent: July 5, 1977
    Assignee: Colt Industries Operating Corporation
    Inventor: Robert J. Miller
  • Patent number: 3996960
    Abstract: A control valve for liquid in stationary tanks, such as toilets humidifiers and the like, of the type housed within a tank, having an inlet orifice for water and an outlet orifice for the same, including a lever which actuates, by means of chain or cable, a sealing plug in said outlet orifice of said tank opening it to empty said tank and which includes a float connected to a rod which actuates a valve member for opening and closing the intake orifice of liquid into the tank, wherein a laminar support structure is connected to said inlet orifice for liquid into said tank a height adjustable bracket projecting from said support structure, a yoke supported on said bracket; a L-shaped elbow member being pivotally supported by its apex on said yoke one of the arms of said elbow member is connected to said rod joined to said float and the other of which arms having its bottom edge rounded in such a manner that when said tank is full it presses, against the bottom face of said yoke supported on said bracket; an ela
    Type: Grant
    Filed: February 27, 1975
    Date of Patent: December 14, 1976
    Inventor: Federico Martinez-Lozano
  • Patent number: 3994313
    Abstract: A diaphragm controlled toilet bowl valve of simple construction that is substantially silent in operation, will not permit water to be siphoned from the tank in which it is disposed during an emergency in which the pressure of water in the supply lines decreases substantially, and one in which the actuating float is easily adjusted without hindering or deforming the rod on which it is supported.
    Type: Grant
    Filed: February 20, 1975
    Date of Patent: November 30, 1976
    Inventor: Anthony R. Brandelli
  • Patent number: 3973582
    Abstract: A force translator in the form of an S-shaped flexible band is connected at its center by a double pivot linkage to an axially movable actuator which, in an air eliminator, is a float.
    Type: Grant
    Filed: March 10, 1975
    Date of Patent: August 10, 1976
    Assignee: Liquid Controls Corporation
    Inventor: Howard E. Siebold
  • Patent number: 3965925
    Abstract: A pinch valve has a tubular resilient sleeve with at least one transversely elongate aperture extending through it that is opened and closed by a control member having elements engaging diametrically opposite regions of the sleeve. The control member is rotatable on the sleeve between one angular position in which said elements engage regions of the sleeve substantially co-incident with the transverse longitudinal axis of said aperture to hold the aperture open, and another angular position in which the elements engage opposite regions transverse to said axis to squeeze said aperture closed.
    Type: Grant
    Filed: March 17, 1975
    Date of Patent: June 29, 1976
    Assignee: J. H. Gooch & Company Limited
    Inventor: John Henry Gooch
  • Patent number: 3945392
    Abstract: The specification discloses a medical suction apparatus including a generally rigid container. A pair of conduits extend from the lid of the container for connection to a patient area to be drained and for connection to a vacuum source. In operation, fluid is drawn from the area to be drained and collected within the container. A flexible float valve is connected to the underside of the lid and is operable upon fluid overflow conditions to obstruct the vacuum conduit to prevent fluid from being drawn into the vacuum source.
    Type: Grant
    Filed: October 10, 1974
    Date of Patent: March 23, 1976
    Assignee: C. R. Bard, Inc.
    Inventors: David W. Deaton, Stephen M. Brower, Marshall P. Durham Jr.
  • Patent number: 3939728
    Abstract: A control device of the double lever-fulcrum type for controlling the opening and closing of a fluid valve includes a single solid shaft rotatably mounted and connected to a longer or power lever. A notch is formed in the shaft to provide a preferably flat surface, one end edge of which acts on the valve element to close the valve. The fulcrum of the device comprises the longitudinal axis of the shaft, and the shorter or thrust lever of the device comprises a radius of the shaft extending from the longitudinal axis to the one end edge of the surface formed by the notch.
    Type: Grant
    Filed: March 12, 1974
    Date of Patent: February 24, 1976
    Assignee: Tecnologia Aplicada S.A.
    Inventor: Enrique Klien Wallstein