Venting Passage Within Movable Main Valve Patents (Class 251/30.03)
  • Patent number: 10082219
    Abstract: A solenoid valve (1) is provided comprising a housing, an inlet, an outlet, main valve means located between said inlet and said outlet, said main valve means comprising a main valve element, pilot valve means adjusting a pressure difference over said main valve element and having a pilot valve element, a coil, a yoke arrangement magnetically linked to said coil, and armature means for moving said pilot valve element. Such a solenoid valve should achieve a large opening stroke without unduly increasing the coil and yoke arrangement. To this end said armature means comprise a first part attractable by said yoke means to perform an opening stroke, and a second part carrying said pilot valve element, wherein said first part is movable relative to said second part in a first section of said opening stroke and is dragging said second part in a second section of said opening stroke following said first section.
    Type: Grant
    Filed: July 10, 2015
    Date of Patent: September 25, 2018
    Assignee: Danfoss A/S
    Inventor: Michael Birkelund
  • Patent number: 10041608
    Abstract: Switching valve for controlling a mass flow in a cold or hot circuit. The valve includes a valve housing having a feed opening and a discharge opening; a valve piston which has a valve-closure member directed towards the discharge opening and which, in a closed position, abuts a valve seat of a through-bore between the feed opening and the discharge opening; a pilot valve having a pilot bore in the valve piston, which bore opens into the through-bore and traverses the valve piston; a path-generating device having an actuatable ram accommodating a closure member which closes the pilot bore and, with the closure member, can be moved into an opening position which opens the pilot bore; and a bypass duct formed between the feed opening and the pilot bore. At least one connection element forcibly transfers at least some of the stroke movement of the ram onto the valve piston.
    Type: Grant
    Filed: May 21, 2014
    Date of Patent: August 7, 2018
    Assignee: OTTO EGELHOF GMBH & CO. KG
    Inventors: Joan Aguilar, Rainer Maurer, Markus Nagel, Jean-Jacques Robin, Kai Schauwecker
  • Patent number: 9869419
    Abstract: In one embodiment, a water system includes a compressor, a condenser fluidly coupled to the compressor by refrigerant tubing, a modulating motor-controlled valve configured to alter a flow of water through the condenser, an accelerometer mechanically coupled to the water system, and a water system controller. The water system controller may be configured to perform an automated anti-water hammer procedure.
    Type: Grant
    Filed: May 24, 2016
    Date of Patent: January 16, 2018
    Assignee: Lennox Industries Inc.
    Inventors: Eric Perez, Steve Schneider, Harold Gene Havard, Jr.
  • Patent number: 9784374
    Abstract: A fluid control device includes: a valve body accommodating chamber having an inner space divided into a first chamber and a second chamber by a first valve body; a receiving port, which opens to the first chamber and through which a fluid from an accumulator is received in the first chamber, and a discharge port, which opens to the first chamber and through which the fluid is discharged from the first chamber; a guide path guiding the fluid from the accumulator to the second chamber such that the first valve body moves to a valve-closed position to close the discharge port; a second valve body switchable between a state of maintaining pressure of the fluid guided to the second chamber and a state of releasing the pressure; and a bias member biasing the first valve body to the valve-closed position.
    Type: Grant
    Filed: October 22, 2015
    Date of Patent: October 10, 2017
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventor: Mitsuru Ikeda
  • Patent number: 9683673
    Abstract: A magnetic valve (1) in which a valve housing (2), an armature tube (3), an inlet connection (4) and an outlet connection (5) form a single valve part is provided. An armature (9) made from a soft magnetic material is arranged movably inside the armature tube (3). A coil (16) is arranged externally to the armature tube (3) in such a manner that the armature tube (3) and the armature (9) are arranged inside the windings of the coil (16). A valve closing element (10) is connected to the armature (9) and is movable between a position in which it abuts a valve seat (8) and positions in which it does not abut the valve seat 8, thereby closing and opening the valve (1). In one embodiment, the flow path through the valve (1) from the inlet opening (6) to the outlet opening (7) does not pass through the windings of the coil (16). In another embodiment, the armature tube (3) comprises a closed end part (3a).
    Type: Grant
    Filed: September 11, 2013
    Date of Patent: June 20, 2017
    Assignee: Danfoss A/S
    Inventors: Kristjan Arnor Gretarsson, Michael Birkelund
  • Patent number: 9650947
    Abstract: In order to prevent deterioration of sliding performance of a piston and center core misalignment of the piston when the piston moves for its stroke, there is provided an air bypass valve including: a coil casing in which a coil is accommodated; a pilot valve section covered by the coil casing and having a movable iron core inserted in the coil; and a piston section fitted in the coil casing and having a piston with a hole. The air bypass valve further includes a protrusion provided at an edge of an opening portion of the piston casing which constitutes the piston section.
    Type: Grant
    Filed: November 23, 2015
    Date of Patent: May 16, 2017
    Assignee: Nachi-Fujikoshi Corp.
    Inventors: Yuji Egami, Tokushi Yasoda
  • Patent number: 9599247
    Abstract: An electromagnetic valve for controlling the flow of a pressure medium, said electromagnetic valve comprising a valve housing with an inlet port and an outlet port for the pressure medium; at least one passage opening, which connects the inlet port to the outlet port, for the pressure medium; a valve slide that can be moved axially between a first basic position, which closes the passage opening, and a second basic position, which opens the passage opening, by means of a solenoid coil; and a spring assembly, which positions the valve slide in the first or the second basic position when the solenoid coil is not energized. A spring excursion limiting means limits a specified spring excursion of the second spring portion to position the valve slide in an intermediate position between the first and second basic position by the energized solenoid coil. The valve slide releases at least a partial cross section of the passage opening in the intermediate position.
    Type: Grant
    Filed: June 3, 2014
    Date of Patent: March 21, 2017
    Assignee: KENDRION (VILLINGEN) GMBH
    Inventors: Joachim Flühs, Holger Brandenburg
  • Patent number: 9528370
    Abstract: The embodiments described herein generally relate to a fluid pressure pulse generating apparatus with a primary seal assembly, back up seal assembly and pressure compensation device. The pressure compensation device comprises a membrane support and a longitudinally extending membrane system. The membrane support has a longitudinally extending bore therethrough for receiving a driveshaft of the fluid pressure pulse generating apparatus. The longitudinally extending membrane system comprising a longitudinally extending outer membrane sleeve and a longitudinally extending inner membrane sleeve with the inner membrane sleeve positioned inside the outer membrane sleeve. The membrane system is sealed to the membrane support to allow flexing of the membrane system in response to fluid pressure on either an inner longitudinal surface of the membrane system or an outer longitudinal surface of the membrane system and to prevent fluid on the inner longitudinal surface mixing with fluid on the outer longitudinal surface.
    Type: Grant
    Filed: June 19, 2015
    Date of Patent: December 27, 2016
    Assignee: Evolution Engineering Inc.
    Inventors: Aaron W. Logan, Justin C. Logan, David A. Switzer
  • Patent number: 9291276
    Abstract: An irrigation valve has a liquid passage, a sealing diaphragm and a control port that can receive control signals. The sealing diaphragm is held in the valve in a non clamped manner and is adapted to seal the passage. Upon receipt of a control signal the sealing diaphragm bends and opens a path for liquid around the sealing diaphragm that can exit the valve.
    Type: Grant
    Filed: February 26, 2012
    Date of Patent: March 22, 2016
    Assignee: Netafim, Ltd.
    Inventor: Ron Keren
  • Patent number: 9194501
    Abstract: An apparatus includes a cage and a main plug disposed in the cage. The main plug is movable between a main plug closed position and a main plug open position. A seal assembly disposed on the main plug, the seal assembly having a seal that is configured to contact the cage when the main plug is in the main plug closed position, and configured to reduce contact with the cage when a pressure differential across the seal is reduced. The apparatus includes a pressure balancing assembly movable between a closed position, an overtravel position and an open position. The pressure balancing assembly is configured to balance the pressure differential across the seal when in the overtravel and open position.
    Type: Grant
    Filed: November 20, 2012
    Date of Patent: November 24, 2015
    Assignee: Dresser, Inc.
    Inventors: Thomas Henry Cunningham, Christopher Edward Wolfe, Nuo Sheng, Xuele Qi, Azam Mihir Thatte, James Albert Stares, Henry William Boger
  • Patent number: 9046189
    Abstract: An electromagnetic valve includes: a valve main body including an inlet and an outlet of a fluid; a valve body to be seated on a valve seat provided between the inlet and the outlet; a movable iron core separating the valve body from the valve seat to communicate the inlet with the outlet; and a fixed iron core attracting the movable iron core by energization of a coil to axially drive the movable iron core. The valve main body includes an insertion hole into which a guide member is inserted and a stopper portion to stop the guide member biased by a pressure of the fluid. The guide member includes a sliding hole in which the movable iron core is axially movable, and is arranged in the insertion hole in a slidable manner with respect to the valve main body to be biased by the pressure of the fluid.
    Type: Grant
    Filed: October 21, 2010
    Date of Patent: June 2, 2015
    Assignees: TOYOOKI KOGYO CO., LTD, JTEKT CORPORATION
    Inventor: Noritaka Watanabe
  • Patent number: 9033305
    Abstract: Water valves and methods of regulating fluid flow for low ambient pressure water sources that reduce the amount of filtration needed for valve mechanisms operating in the water source.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: May 19, 2015
    Assignee: PRETTL
    Inventor: Philip Schreier
  • Patent number: 8985549
    Abstract: An electromagnetic valve (32) for use in controlling fluid flow between first and second passageways (P1, P2) in a hydraulic valve block (4), includes a valve body (51). The valve body (51) defines a central axis (A), has a central opening (51A) therethrough, has a lower end (54) adapted to be inserted into a bore (19) of the valve block (4), and is provided with a lower cylindrical opening (70). An armature (56) is axially movable within the valve body (51) and is biased by a spring in one axial direction (57A). A closing element (88) is carried by a lower end (54) of the armature (56). An electromagnetic coil (64) coaxially surrounds the armature (56) and is operable to effect axial movement of the armature (56) in an axial direction opposite the one direction (57B). A valve seat member (62) is carried by the lower end (54) of the valve body (51) and has an orifice (98) providing fluid flow between the first and second valve block passageways (P1, P2).
    Type: Grant
    Filed: February 3, 2011
    Date of Patent: March 24, 2015
    Assignee: Kelsey-Hayes Company
    Inventors: Tim Ferguson, William D. Doyle, David E. Collins
  • Patent number: 8960638
    Abstract: A solenoid valve device that includes a body (2, 7) with an inlet (3) and an outlet (4) for the fluid, and with a main valve seat (6) through which the fluid can flow from the inlet (3) to the outlet (4); a main plug (8, 9); a control chamber (11) partially delimited by the main plug (8); a first passage (8d, 9b, 9c) for communication between the inlet (3) and the control chamber (11); a second passage (12, 13) for communicating the control chamber with the outlet (4); and a control solenoid valve (14) including a control solenoid (15) which controls a movable unit (17) including a first core (18) which can interact as a movable plug with the second passage (12, 13). Activation of solenoid (15) causes attraction of first core (18) towards a second core (21) and the opening of the second passage (12, 13).
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: February 24, 2015
    Assignee: Elbi International S.p.A.
    Inventors: Paolo Da Pont, Paolo Ravedati, Giosué Capizzi, Maurizio Rendesi, Fabrizio Paris, Roberto Bosio, Massimo Davi
  • Patent number: 8833391
    Abstract: A valve arrangement is provided for selectively connecting a source of fluid pressure to a consumer in order to actuate the consumer in a predetermined direction. The valve arrangement utilizes a valve cone arranged in the valve body which connects the valve ports with each other when the valve cone is in its open position, and is actuated by a holding force which is greater than the force acting on the pressurized fluid side of the valve cone and dependent on the medium pressure in the input port.
    Type: Grant
    Filed: August 21, 2007
    Date of Patent: September 16, 2014
    Assignee: Parker-Hannifin Corporation
    Inventor: Bo Andersson
  • Publication number: 20140231681
    Abstract: An electromagnetically-actuated piloted valve includes a housing provided with a plurality of cavities through which a pressurized operating fluid can enter or exit the valve, a driving device including an electromagnet, and a plugging device that is longitudinally movable along two opposite parallel directions and driven by the driving device. The valve includes an abutting element provided with at least one through hole arranged for being selectively engaged or disengaged from the plugging device so as to alternatively enable or prevent the operating fluid from traversing the hole and thus alternatively enabling or preventing the passage of the operating fluid through the valve.
    Type: Application
    Filed: July 25, 2012
    Publication date: August 21, 2014
    Applicant: Atlantic Fluid Tech S.r.l.
    Inventors: Christian Storci, Diego Basciu
  • Patent number: 8783644
    Abstract: A controlled pressure release valve includes a valve body having a gas inlet for connection to a gas container and a gas outlet for delivering gas to a protected area. The controlled valve comprises a slidable spool housed in the valve body that is slidable between a first position and a second position. The slidable spool has a first end and a second end. A primary flow passage connects the gas inlet and the gas outlet and increases with lineal movement of the slidable spool. The sliding spool is biased towards the first position by a gas pressure applied by the second chamber and a spring.
    Type: Grant
    Filed: April 7, 2005
    Date of Patent: July 22, 2014
    Assignee: Chubb International Holdings Limited
    Inventors: Fanping Sun, Zaffir Chaudhry, Muhidin A. Lelic, Mihai Dorobantu, Stevo Mijanovic, Lisa A. Prill, Umesh G. Vaidya
  • Publication number: 20140008555
    Abstract: A proportional valve is provided comprising a valve (1) comprising a housing (2) having an inlet (3) and an outlet (4), a valve element (5) being positioned between said inlet (3) and said outlet (4), said valve element (5) being moveable in said housing (2), said valve element (5) having a pilot valve opening (7), a first pressure chamber (16), a pressure in said first pressure chamber (16) acting on said valve element (5) in a first direction, a second pressure chamber (17), a pressure in said pressure chamber (17) acting on said valve element (5) in a second direction opposite to said first direction, a pilot valve element (6) cooperating with said pilot valve opening (7) to form a pilot valve, said pilot valve element (6) being actuated by drive means (8), wherein a flow resistance between said inlet (3) and said first pressure chamber (16) is smaller than a flow resistance between said inlet (3) and said second pressure chamber (17).
    Type: Application
    Filed: March 20, 2012
    Publication date: January 9, 2014
    Applicant: DANFOSS A/S
    Inventor: Michael Birkelund
  • Patent number: 8585009
    Abstract: A flow control valve including a linear electric actuator for controlling flow through the valve, and a closure device operable to close the valve independently of the linear electric actuator if the linear actuator is disabled when the valve is open.
    Type: Grant
    Filed: December 8, 2008
    Date of Patent: November 19, 2013
    Assignee: Kohler Mira Limited
    Inventors: Xiangzhen Zhu, Richard Timothy Hopson
  • Patent number: 8555916
    Abstract: An electromagnetic valve having a flow control function. A valve body has an inlet, an outlet, a valve chest, and a valve plate contained inside the valve chest. The valve plate opens and closes a valve seat using a movable core in order to control the flow rate of water and to prevent backflow. A first channel is disposed inside the outlet. A flow control means, configured as a single unit, is inserted into the outlet, and includes a mover for opening and closing a flow of water by being detached from and brought into contact with the first channel, a stator disposed coaxially with the mover. The stator allows the mover to be elastic and freely movable using a restoring element. A flow rate control element is supported on the stator, and has a predetermined interval from the stator to form a second channel.
    Type: Grant
    Filed: November 14, 2011
    Date of Patent: October 15, 2013
    Assignee: Useong Electro Mechanics Co., Ltd.
    Inventor: Gwan Ho Ro
  • Patent number: 8549677
    Abstract: A control device for automatic water discharge installed at position where water is discharged in apparatus for automatic water discharge in a kitchen and sanitary environment is provided. The device comprises a housing, a sensor unit disposed inside the housing, a water discharge unit, and an electromagnetic valve assembly. The housing comprises a first holding chamber configured to receive the sensor unit, a second holding chamber configured to receive the electromagnetic valve assembly, a third holding chamber configured to receive the water discharge unit, and a water intake chamber. The sensor unit comprises a circuit board and a sensor set at the circuit board. The circuit board is provided with a processor. The electromagnetic valve assembly comprises an electromagnetic valve electrically connected with the circuit board and a diaphragm unit.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: October 8, 2013
    Assignee: Shanghai Kohler Electronics, Ltd.
    Inventors: Chen Weigen, Def Xiong
  • Patent number: 8485496
    Abstract: A flush valve assembly including a discharge receiver with a plug opening therein, a sleeve, a main valve assembly positioned within the sleeve, and a main diaphragm sealingly connected between the main valve assembly and the sleeve. The main diaphragm and the main valve assembly define a control chamber on an upper side thereof and an inlet region on a lower side thereof. The assembly also includes a discharge plug with a flange portion configured to be received in the plug opening in the discharge receiver. When the flush valve assembly is in a non-pressurized condition, the flange portion of the discharge plug is not seated within the plug opening of the discharge receiver, and when the flush valve assembly is in a pressurized condition, the flange portion of the discharge plug is seated within the plug opening of the discharge receiver. The flushing operation may be electronic and/or manual.
    Type: Grant
    Filed: November 23, 2009
    Date of Patent: July 16, 2013
    Assignee: Sloan Valve Company
    Inventor: Donna D. Johnson
  • Patent number: 8424836
    Abstract: A valve has a valve body including a main chamber having a first port and a second port, and a main poppet disposed within the main chamber. The main poppet includes a first surface forming a control chamber within the main chamber. The valve has a first passage communicating the control chamber with the first port, and a second passage communicating the control chamber with the second port. The valve also includes a pilot valve having a pilot poppet for controlling fluid flow from the control chamber to the first port through a third passage, and to the second port through a fourth passage, respectively. The valve may further have a feedback spring coupled between the main poppet and the pilot poppet to provide a force relative to a distance between the main poppet and the pilot poppet.
    Type: Grant
    Filed: June 16, 2006
    Date of Patent: April 23, 2013
    Assignee: Caterpillar Inc.
    Inventors: Pengfei Ma, Philippe Vande Kerckhove, James Alvin Aardema
  • Patent number: 8413681
    Abstract: A swivel fitting is specifically configured for mounting a pressure regulator and a solenoid to a valve having a female threaded solenoid mounting port. The swivel fitting includes a generally cylindrical upper body having a first female threaded bore for having a male threaded neck of either a solenoid or a pressure regulator screwed into the first bore. A generally cylindrical lower body is mated to the upper body and has a male threaded segment for screwing into the female threaded solenoid mounting port of a valve. A swivel body surrounds and encloses the upper body and the lower body and has an extension with a second female threaded bore for having the male threaded neck of either the solenoid or the pressure regulator screwed into the same. The swivel body is freely rotatable relative to the cylindrical bodies.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: April 9, 2013
    Assignee: Hunter Industries, Inc.
    Inventor: Darrin I. Schmuckle
  • Patent number: 8382063
    Abstract: An electromagnetic valve includes a valve body, a valve element, a movable iron core, a guide tube, a coil, a yoke, and a fixed iron core. The valve body includes a fluid flow path. The valve element is movable and seated on a valve seat provided in the fluid flow path of the valve body. The movable iron core moves the valve element with respect to the valve seat. The guide tube is cylindrical and movably supports the movable iron core. The coil is mounted on an outer periphery of the guide tube. The yoke covers an outside of the coil and forms a magnetic circuit. The fixed iron core is provided facing the movable iron core and attracts the movable iron core by energization of the coil. The valve body is coupled to the guide tube on one opening end side of the guide tube, and the fixed iron core is provided on an other end side of the guide tube with a clearance spaced from an inside of the guide tube.
    Type: Grant
    Filed: December 10, 2008
    Date of Patent: February 26, 2013
    Assignee: Toyooki Kogyo Co., Ltd
    Inventor: Noritaka Watanabe
  • Patent number: 8336848
    Abstract: An on-off flow valve extends along an axis and has a valve body through which a supply duct and a delivery duct pass; a main shutter assembly; and a cover fitted to the valve body by means of a snap-on coupling system.
    Type: Grant
    Filed: November 7, 2008
    Date of Patent: December 25, 2012
    Assignee: R.P.E. S.r.l.
    Inventor: Andrea Foglia
  • Patent number: 8256739
    Abstract: A control valve includes a main poppet that moves in response to pressure in a primary control chamber and thereby controls the flow of fluid through a valve seat between first and second ports. A passageway extends between the second port and the primary control chamber and includes a variable flow restriction that decreases as the main poppet moves away from the valve seat. An electrohydraulic pilot valve has a pilot poppet which controls fluid flow from the primary control chamber to the first port in response to pressure in a pilot control chamber. A sub-pilot valve selectively releases pressure in the pilot control chamber to operate the pilot poppet to open and close a path between the inlet and the outlet. Using an electrohydraulic pilot valve enables the main poppet to operate quickly in controlling large fluid flow rates. Unidirectional and bidirectional versions of the control valve are described.
    Type: Grant
    Filed: November 16, 2009
    Date of Patent: September 4, 2012
    Assignee: Husco International, Inc.
    Inventor: Joseph L. Pfaff
  • Patent number: 8235352
    Abstract: A diaphragm valve for use in an irrigation system is disclosed that is adapted to reduce the water hammer effect, reduce debris in a flow path through a valve seat, improve bleed operation and/or reduce manufacturing and materials costs.
    Type: Grant
    Filed: May 21, 2007
    Date of Patent: August 7, 2012
    Assignee: Rain Bird Corporation
    Inventors: Kevin M. Irwin, Clint R. Haas
  • Patent number: 8220774
    Abstract: A valve assembly comprising a pilot valve; a solenoid; and a main valve, the main valve having an actuator in communication with a pressure control; the pilot valve may facilitate opening the main valve in proportion to an energized level of the solenoid. The solenoid may move the first disc to isolate the inlet port from the pressure control and/or move the second disc to communicate the outlet port with the pressure control. The actuator may move the second disc to isolate the outlet port from the pressure control and/or move the first disc to communicate the inlet port with the pressure control. The pilot valve may isolate both the inlet port and the outlet port from the pressure control when the pilot valve experiences forces in equilibrium from the solenoid and the actuator.
    Type: Grant
    Filed: April 30, 2009
    Date of Patent: July 17, 2012
    Assignee: Automatic Switch Company
    Inventors: Laurence Vaughan Borst, Frank Alan Ferrarese, Vincent Cole
  • Patent number: 8172197
    Abstract: A fast-acting, pneumatic diaphragm valve includes a diaphragm valve closure member, a pneumatic piston that provides a closure force on the closure member, and a solenoid pilot valve that controls pressurized air to the piston to cause the piston to move in a reciprocal manner so that the closure member opens and closes the valve. The valve seat seal can be elastomer for enhancing speed, and the solenoid pilot valve can be positioned and configured with air flow longitudinally through or past the solenoid armature to enhance speed.
    Type: Grant
    Filed: July 6, 2006
    Date of Patent: May 8, 2012
    Assignee: MKS Instruments, Inc.
    Inventors: Youfan Gu, Sven Nuesken
  • Patent number: 8066255
    Abstract: A solenoid valve has a main body defining a gas inlet passage, a gas outlet passage, and a cavity; a core tube forming a closure for said cavity so as to prevent an escape of gas; a cylindrical main piston slidably movable in said cavity of said main body, said main piston forming a front chamber and a back chamber in said main body, said main piston having a gas conduit for passing the gas from said gas inlet passage to said front chamber and an axial hole for passing the gas from said back chamber into said gas outlet passage with a bleed orifice at one end of said axial hole; said main piston being spring biased to a closed position; a spring biased pilot piston; and electrical coil means associated with said core tube to provide a magnetic field for movements of said pilot piston and said main piston, so that when said coil means is deenergized said pilot piston closes said outlet passage and causes a pressure equalization allowing said return spring to push said main piston to close the valve, while when
    Type: Grant
    Filed: July 25, 2001
    Date of Patent: November 29, 2011
    Inventor: Chia-Ping Wang
  • Patent number: 7975981
    Abstract: An apparatus (such as a valve assembly or other actuator) includes a pressure plate having a first hole and a second hole. The apparatus also includes a plunger configured to selectively cover the second hole of the pressure plate. The apparatus further includes a coil configured to move the plunger away from the pressure plate to uncover the second hole of the pressure plate in order to allow a material to flow through the apparatus. The coil is also configured to move the plunger towards the pressure plate to cover the second hole of the pressure plate in order to block the material from flowing through the apparatus. Pressure may equalize on a first side and a second side of the pressure plate after the plunger covers the second hole of the pressure plate.
    Type: Grant
    Filed: June 10, 2008
    Date of Patent: July 12, 2011
    Assignee: Harrison AG Technologies, Inc.
    Inventor: John H. Harrison, Jr.
  • Publication number: 20110121213
    Abstract: A flush valve assembly including a discharge receiver with a plug opening therein, a sleeve, a main valve assembly positioned within the sleeve, and a main diaphragm sealingly connected between the main valve assembly and the sleeve. The main diaphragm and the main valve assembly define a control chamber on an upper side thereof and an inlet region on a lower side thereof. The assembly also includes a discharge plug with a flange portion configured to be received in the plug opening in the discharge receiver. When the flush valve assembly is in a non-pressurized condition, the flange portion of the discharge plug is not seated within the plug opening of the discharge receiver, and when the flush valve assembly is in a pressurized condition, the flange portion of the discharge plug is seated within the plug opening of the discharge receiver. The flushing operation may be electronic and/or manual.
    Type: Application
    Filed: November 23, 2009
    Publication date: May 26, 2011
    Applicant: SLOAN VALVE COMPANY
    Inventors: Dwight N. Johnson, Donna D. Johnson
  • Patent number: 7905467
    Abstract: A dual position pilot operated valve assembly having a main piston, with a valve member, reciprocable within a valve body, wherein the valve body is adapted for sealingly mating with a valve seat and passage located intermediate the valve body inlet and outlet ports, the valve body having a cylindrical adapter secured to an open end thereof and housing a secondary piston, reciprocable therein, with an axial stem depending from the second piston bottom surface and extending through the adaptor to the first piston cavity for intermittent contact therewith; and an end cap secured to and closing the adapter and having an inlet port interconnected with a source of high pressure control gas and respective first and second conduits leading to the main and secondary piston bore cavities, with an adjustment mechanism controlling the degree of opening/closing of the valve assembly. Several methods of operation are also set forth.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: March 15, 2011
    Assignee: Parker-Hannifin Corporation
    Inventor: Paul G. Szymaszek
  • Patent number: 7866625
    Abstract: A solenoid valve for a brake system, which has a simplified configuration and can be easily manufactured with reduced manufacturing costs.
    Type: Grant
    Filed: April 28, 2008
    Date of Patent: January 11, 2011
    Assignee: Mando Corporation
    Inventors: Chung Jae Lee, Wook Jin Choi, Yong Kap Kim
  • Publication number: 20100294962
    Abstract: The invention relates to a piloted valve, particularly a piloted proportional throttle valve, having a valve piston (29) displaceably guided in the longitudinal direction in a valve housing (13) having a fluid inlet (2) and outlet (1), the front side (27) whereof can be pressurized against a main valve seat (25) by fluid pressure acting on the back side thereof, having a pilot valve device comprising an actuating member (7) displaceable in the longitudinal direction by means of an electrically actuatable magnet system (4), working together with a pilot valve seat (37) in a bore (17) of the valve piston (29) connecting the back side thereof to the fluid outlet (1) on the front side of the piston, in order to reduce the fluid pressure on the back side of the piston (29) for an opening motion when the pilot valve seat (33) is released, a flow baffle device (39) being disposed between the back side of the piston and the fluid inlet (2) of the housing (13) for building up the fluid pressure pressurizing the piston
    Type: Application
    Filed: December 16, 2008
    Publication date: November 25, 2010
    Inventors: Markus Bill, Peter Bruck
  • Patent number: 7806382
    Abstract: A valve assembly comprises a diaphragm valve, a pressure regulator and a solenoid. The pressure regulator is operatively coupled to the diaphragm valve for maintaining a predetermined pressure in water exiting the diaphragm valve despite fluctuations in the pressure of water entering the diaphragm valve. The solenoid is mounted on the pressure regulator so that a plunger axis of the solenoid extends through a coil spring of the pressure regulator. The solenoid is operatively coupled to the diaphragm valve through the pressure regulator for opening and closing the diaphragm valve.
    Type: Grant
    Filed: May 21, 2007
    Date of Patent: October 5, 2010
    Assignee: Hunter Industries, Inc.
    Inventors: Aaron J. Palumbo, Satoshi Kuwahara, Mohammad Dairi, Matthew G. Beutler
  • Patent number: 7762520
    Abstract: The invention provides a servo valve which is operable in vacuum systems and can be switched between an open and a closed state even by use of low forces. For that purpose, the valve has a closure member (4) moving between the open and a closed position under influence of a difference between a control pressure of a control chamber (13) and the pressures of the intake (2) and outlet (3), respectively. The control chamber is in constant fluid communication with the intake, and in adjustable fluid communication with the outlet to influence the control pressure mainly by the intake pressure and the outlet pressure depending on the adjustable fluid communication. The invention further provides a vacuum system with such a servo valve.
    Type: Grant
    Filed: May 24, 2004
    Date of Patent: July 27, 2010
    Assignee: Danfoss A/S
    Inventor: Hans Kurt Petersen
  • Patent number: 7730905
    Abstract: A high pressure valve for hydrogen gas includes a valve seat and a valve member, which is movable to selectively open and close the valve seat. One of the valve member and the valve seat is formed of austenitic stainless steel, and the other one of the valve member and the valve seat is formed of flexible synthetic resin or soft metal.
    Type: Grant
    Filed: January 23, 2008
    Date of Patent: June 8, 2010
    Assignees: Toyooki Kogyo Co., Ltd., Jtekt Corporation
    Inventors: Hiroaki Suzuki, Yoshiyuki Takeuchi, Toshihiko Shima, Soichi Shirai
  • Patent number: 7703740
    Abstract: A clog resistant, pilot operated pilot valve having two fluid paths, one path for fluid flow from the valve input to the valve output, and the second path for fluid flow through input and output pilot apertures. The opening and closing of the pilot apertures controls the flow of fluid between the input and output of the pilot valve. A clog resistant pilot operated valve in which fluid flows through the pilot fluid path only during the time of transition from an valve open to a valve closed condition, or vice-versa, thereby reducing the probability of failure due to contaminants blacking the pilot activation path. A clog resistant pilot operated valve in which the plunger, used to open and close the pilot fluid paths, is ribbed in construction to reduce the probability that contaminants will cause seizure of the plunger movement.
    Type: Grant
    Filed: March 6, 2009
    Date of Patent: April 27, 2010
    Inventor: Robert C. Franklin
  • Patent number: 7677527
    Abstract: A dual position pilot operated valve assembly having a main piston, with a valve member, reciprocable within a valve body, wherein the valve body is adapted for sealingly mating with a valve seat and passage located intermediate the valve body inlet and outlet ports, the valve body having a cylindrical adapter secured to an open end thereof and housing a secondary piston, reciprocable therein, with an axial stem depending from the second piston bottom surface and extending through the adaptor to the first piston cavity for intermittent contact therewith; and an end cap secured to and closing the adapter and having an inlet port interconnected with a source of high pressure control gas and respective first and second conduits leading to the main and secondary piston bore cavities, with an adjustment mechanism controlling the degree of opening/closing of the valve assembly. Several methods of operation are also set forth.
    Type: Grant
    Filed: March 3, 2006
    Date of Patent: March 16, 2010
    Assignee: Parker-Hannifin Corporation
    Inventor: Paul G. Szymaszek
  • Publication number: 20100032595
    Abstract: A fluid control device is disclosed that is configured to vent pilot volume through an exhaust port or exhaust passageway (140) integrated into the fluid control device. The fluid control device has a fluidic switch (112) configured to switch a pilot volume into the exhaust port or exhaust passageway (140) when a signal port or signal passageway (114) is de-pressurized. The fluidic switch (112) couples the signal port or signal passageway (114) to the pilot volume when the signal port or signal passageway (114) is pressurized.
    Type: Application
    Filed: October 23, 2006
    Publication date: February 11, 2010
    Applicant: Norgen, Inc.
    Inventor: Walter A. Zub
  • Publication number: 20090212244
    Abstract: A pilot-operated valve has a main poppet controlling fluid flow between inlet and outlet ports in response to pressure in a control chamber. Fluid flow through a pilot passage, linking the control chamber and the outlet port, moves an exhaust spool between first and second positions to control fluid flow through passages in the main poppet. The first position blocks flow between the control chamber and the outlet port and provides a path between the control chamber and the inlet port. In the second position, flow between the control chamber and the outlet port is enabled, and a second path, that is more restricted than the first path, is provided between the control chamber and the inlet port. When the valve closes, flow through the first path allows movement of the main poppet at a faster rate than during opening when flow occurs through the more restricted second path.
    Type: Application
    Filed: February 26, 2008
    Publication date: August 27, 2009
    Inventors: Joseph L. Pfaff, Gennady Shimelfarb, Christopher E. Lentz
  • Patent number: 7513395
    Abstract: A valve includes a body; a liquid flow passage defined in the body and including a liquid inlet and a liquid outlet; a vent passage defined in the body and including an air inlet and an air outlet; a valve seat defined in the liquid flow passage; a liquid seal located adjacent the valve seat; a stem connected to the liquid seal and extending in the liquid flow passage away from the liquid seal through an aperture defined in the body. The stem includes a distal end located external to the body. The stem is movable to and from a first position where the liquid seal is mated with the valve seat and a second position where the liquid seal is unseated from the valve seat. An actuator is connected to the distal end of the stem. The actuator is selectively movable to move the stem from the first position to the second position. A check-valve is adapted to block flow of liquid from the air outlet to the air inlet in the vent passage, and to allow flow of air from the air inlet to the air outlet in said vent passage.
    Type: Grant
    Filed: March 23, 2005
    Date of Patent: April 7, 2009
    Assignee: The Meyer Company
    Inventors: Jeffery J. Labinski, Michael H. Meyer
  • Patent number: 7341236
    Abstract: A pilot operated valve has a main poppet that selectively controls flow of fluid between first and second ports in response to pressure in a control chamber on one side of the main poppet. The main poppet has an aperture extending between the control chamber and the first port. A pilot piston slides within the aperture and has the pilot passage with a pilot orifice and a first disk spring biases the pilot piston with respect to the main poppet. A pilot valve element selectively engages the pilot orifice to open and close the pilot passage and thereby controls motion of the main poppet. Forces from the first disk spring and a pressure differential between control and pilot chambers alter a position of the pilot valve seat with respect to the main poppet. The change in position compensates for effects on valve operation due to variation of the pressure at the two ports.
    Type: Grant
    Filed: March 7, 2006
    Date of Patent: March 11, 2008
    Assignee: HUSCO International, Inc.
    Inventors: Dwight B. Stephenson, Xiaolong Yang, Randall J. Jackson, R. Christopher Hughes
  • Publication number: 20070164243
    Abstract: The present disclosure provides a method, apparatus, and system of an inline direct acting solenoid pilot valve. The valve has a solenoid assembly with a longitudinally moveable core assembly that shifts alternatively between sealing engagement on a lower first end of the core assembly with a pilot port formed in a poppet and sealing engagement on an opposite upper end with a stationary pilot exhaust port in the solenoid assembly. The core assembly can move in the same or opposite direction than the poppet and thus is independently moveable from the poppet to effect the various modes of operation. Because the movement is independent, the core assembly can advantageously operate within the solenoid with a shorter stroke to produce a higher overall force per length relative to a conventional core assembly stroke that is longer than the poppet stroke. The overall design allows a more compact and simplified design.
    Type: Application
    Filed: January 11, 2007
    Publication date: July 19, 2007
    Applicant: ASCO CONTROLS, L.P.
    Inventor: Gregory Volz
  • Patent number: 7232107
    Abstract: A diaphragm operated valve having the diaphragm attached at its lower end to a valve closure plug, and movable therewith, and attached at its upper end to a portion of valve body that forms the pressure cavity. The diaphragm has a stepped portion between its upper and lower ends which folds back on itself when the valve opens. The valve body has shoulder portions that support the diaphragm when the valve is closed to avoid stressing the diaphragm material due to pressure in the pressure chamber. This allows the outside diameter of the diaphragm to be minimized, and eliminates the need for fabric reinforcement. A filter screen is positioned flush with the surface of the valve plug so that high velocity flow across the screen while the valve is opening and closing removes accumulated dirt thereby making the screen self cleaning.
    Type: Grant
    Filed: November 9, 2005
    Date of Patent: June 19, 2007
    Inventors: Carl L. C. Kah, Jr., Carl L. C. Kah, III
  • Patent number: 7232106
    Abstract: A diaphragm operated valve having the diaphragm attached at its lower end to a valve closure plug, and movable therewith, and attached at its upper end to a portion of valve body that forms the pressure cavity. The diaphragm has a stepped portion between its upper and lower ends which folds back on itself when the valve opens. The valve body has shoulder portions that support the diaphragm when the valve is closed to avoid stressing the diaphragm material due to pressure in the pressure chamber. This allows the outside diameter of the diaphragm to be minimized, and eliminates the need for fabric reinforcement. A filter screen is positioned flush with the surface of the valve plug so that high velocity flow across the screen while the valve is opening and closing removes accumulated dirt thereby making the screen self cleaning.
    Type: Grant
    Filed: April 4, 2002
    Date of Patent: June 19, 2007
    Inventors: Carl Kah, Jr., Carl Kah, III
  • Patent number: 7143992
    Abstract: A device (RF) for regulating and/or stabilizing the flow of a fluid comprises a single body (20), envisaged for insertion in a pipe for passage of the fluid, in particular the inlet pipe of a solenoid valve (1). According to the invention, in the single body (20) of the device there is directly integrated an arrangement for silencing the flow of the fluid. The single body (20) is made in a single piece of moulded thermoplastic material.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: December 5, 2006
    Assignee: Eltek S.p.A.
    Inventors: Luigi Sassone, Paolo Savini
  • Patent number: 7069941
    Abstract: An electronic faucet (10) mounted on a countertop (12) includes a housing, at least one fluid inlet line (24a, 24b) extending into the housing, a fluid outlet (46) from the housing, a solenoid (142, 143) for operating a valve controlling the fluid flow between at least one inlet line and the outlet, and a control circuit (206) for controlling the opening and closing of the valve.
    Type: Grant
    Filed: June 3, 2004
    Date of Patent: July 4, 2006
    Assignee: Arichell Technologies Inc.
    Inventors: Natan E. Parsons, Fatih Guler, Kay Herbert, Xiaoxiong Mo, Gregory P. Greene