Plural Valves Biased Closed Patents (Class 137/506)
  • Patent number: 10378665
    Abstract: A pressure control valve provided with: a main valve section provided with a main valve body having a backpressure chamber on the inside thereof, and a valve housing body that is provided with a main valve seat in which said main valve body can be seated and has a pilot chamber for slidably housing the main valve body; and a pilot valve section that is provided with a pilot valve body and a pilot valve seat member having a pilot valve seat in which said pilot valve body can be seated, and in which the pilot valve body separates from the pilot valve seat to open when the pressure inside the pilot chamber has exceeded a prescribed pressure.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: August 13, 2019
    Assignee: Shimadzu Corporation
    Inventor: Shogo Sonokawa
  • Patent number: 9822709
    Abstract: A control valve for a gas turbine engine air starter. The control valve includes a spherical or ball valve element rotatable between a closed position and an open position to connect an internal flow passage to the air starter. A series of camming elements interconnecting a piston and a valve stem for the spherical valve element convert linear displacement of the piston into rotational movement of the valve for rapid opening.
    Type: Grant
    Filed: October 10, 2014
    Date of Patent: November 21, 2017
    Assignee: PHD, Inc.
    Inventor: Nelson Broman
  • Patent number: 9506227
    Abstract: A plumbing fixture includes a touchscreen user interface on a surface of a plumbing fixture. The touchscreen user interface is configured to allow a user to control at least one of the temperature or flow rate of a fluid exiting the plumbing fixture by controlling a mixing valve located within a body of the plumbing fixture.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: November 29, 2016
    Inventor: Kevin T. Peel
  • Patent number: 9447890
    Abstract: A sealing apparatus for a back pressure regulator includes: a body defining a process surface, and including: at least one process void communicating with the process surface; a recess disposed in the process surface; a floating support hub disposed in the recess, carrying an O-ring; a vent void communicating with the recess; an inlet port disposed in fluid communication with the at least one process void and adapted to be coupled in fluid communication with a fluid at a process pressure; and an outlet port disposed in fluid communication with the vent void; and a diaphragm having opposed reference and process sides, the diaphragm disposed against the body such that the process side is substantially coplanar with the process surface.
    Type: Grant
    Filed: June 23, 2012
    Date of Patent: September 20, 2016
    Assignee: Equilibar, LLC
    Inventors: Jeffrey Dean Jennings, Tony Boyd Tang, Keith Alan Roberts
  • Patent number: 9340958
    Abstract: A mixing valve includes a cold water inlet, a hot water inlet, and an outlet, first and second flow control valves for controlling the flow of hot and cold water. Each of the first and second flow control valves include a valve inlet, first and second valve outlets communicating with the outlet, and a valve member assembly to control the flow of water through the first and second valve outlets. Each valve member assembly includes a first valve member configured to engage with a first valve seat and a second valve member configured to engage with a second, separate, valve seat. The first valve member is configured to be urged closed by water entering through the valve inlet and the second valve member is configured to be urged open by water entering through the valve inlet such that water exerts substantially no net force on the valve members.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: May 17, 2016
    Inventor: Kevin T. Peel
  • Patent number: 9222587
    Abstract: An oil pressure regulator includes a chamber that extends between an oil supply line and an oil bypass line. The chamber extends from a closed end of the chamber to an open end of the chamber. The regulator includes a plunger that is positioned within the chamber. The plunger is movable within the chamber between a first position preventing oil flow from the oil supply line to the oil bypass line, and a second position allowing oil flow from the oil supply line to the oil bypass line. Also, the regulator includes a compression spring that is positioned within the chamber between the plunger and the closed end. When the plunger is in the first position, the compression spring is in an uncompressed state, and when the plunger is in the second position, the compression spring is in a compressed state.
    Type: Grant
    Filed: May 9, 2012
    Date of Patent: December 29, 2015
    Assignee: CUMMINS IP, INC.
    Inventors: Dhanesh Purekar, Paul A. Hayes
  • Patent number: 8851107
    Abstract: A gas releasing and/or regulating mechanism is equipped with a body (1) with a passage, a gas intake (2) and outlet (3), the intake and outlet being connected to the passage; elements to block (5, 6, 7, 8) the passage; mobile elements (9) which associated to the body (1) of the mechanism, define a low pressure chamber (11) below the blocking elements (5, 6, 7, 8), the mobile elements (9) operating the blocking elements (5, 6, 7, 8) depending on the pressure within the low pressure chamber (11). The blocking elements (5, 6, 7, 8) are made of a first shutter (5, 6) and a second shutter (7, 8) below the first in the passage; and the first and second shutters (5, 6, 7, 8) are mechanically connected so that the first shutter (5, 6) closes before the second one (7, 8).
    Type: Grant
    Filed: July 1, 2008
    Date of Patent: October 7, 2014
    Assignee: Luxembourg Patent Company S.A.
    Inventor: Claude Risse
  • Publication number: 20140014190
    Abstract: A differential pressure valve is disclosed, comprising: a valve body, the valve body having at least one flow inlet and one flow outlet; at least one shutter, the shutter being movable between an open position and a closed position under a differential pressure across the valve; a flow passage from the flow inlet to the flow outlet; at least one biasing member configured to bias the shutter towards a closed position so as to block the flow passage through the flow inlet. The biasing member comprises at least two springs arranged in parallel, one of the springs having at least one resonance frequency different from at least one resonance frequency of the other of the two springs.
    Type: Application
    Filed: July 13, 2012
    Publication date: January 16, 2014
    Inventors: Riccardo Bagagli, Carmelo Maggi, Alberto Babbini, Leonardo Tognarelli
  • Patent number: 8550112
    Abstract: Multifunctional safety valve device with proportional pressure regulator, for line feeding aeriform fluid to a user, including a body defining a fluid or gas conduit connected to a gas feed line and a gas delivering line. The conduit has first and second passages intercepted by respective first and second valving elements. The second element downstream of the first for gas pressure regulating and modulating. The valving elements operated by electromagnetic actuators and urged closed at least by a spring. The second element cooperating with a membrane subjected to gas pressure to urge the second element closed. The membrane has, subjected to gas pressure, a surface larger than that of the second element subjected to the same pressure, to maintain the second element closed. The second element presenting, downstream of the second passage, a portion with a flexible rim arranged to seal the second passage when intercepted by the second element.
    Type: Grant
    Filed: October 22, 2007
    Date of Patent: October 8, 2013
    Assignee: Bertelli & Partners S.R.L.
    Inventor: Pierluigi Bertelli
  • Patent number: 8443826
    Abstract: A demand valve for gas mixing comprises two or more flow control valves that are connected to separate gas supplies. The demand valve includes a common actuation mechanism, such as a diaphragm arranged to displace levers, each of which, in turn, opens and closes proportionally in a substantially constant ratio a respective flow control valve. Inhalation flow drawn through an outlet causes displacement of the diaphragm and hence opening of the flow control valves. Gas from the separate supplies is therefore mixed in a main chamber to a substantially constant composition, regardless of the flow rate demanded, before being dispensed via the outlet.
    Type: Grant
    Filed: May 23, 2008
    Date of Patent: May 21, 2013
    Assignee: Concept 2 Manufacture Design OCD Ltd.
    Inventor: Andrew Tatarek
  • Patent number: 8177737
    Abstract: The present invention relates to a drainage device comprising: an internal chamber; at least one inlet port and at least one outlet port communicating with the internal chamber; a shutter disposed at least in part in the internal chamber; at least one first valve seat associated with the inlet port, the shutter being capable of bearing against the first seat in order to isolate the inlet port from the outlet port, in particular when the pressure difference between the inlet and outlet ports is less than a predetermined first opening pressure; and at least one flow constriction associated with the outlet port, the shutter being capable of shutting said constriction, while allowing a minimum, safety flow to pass at a rate that is greater than or equal to 2.5 mL/h even in a maximally-shut position, referred to as a “closed” position, which position is reached in particular for pressure differences between the inlet and outlet ports that are greater than or equal to a predetermined closure pressure.
    Type: Grant
    Filed: January 26, 2007
    Date of Patent: May 15, 2012
    Assignee: Sophysa
    Inventors: Philippe Negre, Olivier Bonnal
  • Patent number: 7506662
    Abstract: An improved one-way fluid valve construction is provided. A valve housing (102) includes one or more valve ports (108) and control ports (110). A control member (304) is disposed within the control port (110). The control member (304) is movable within the control port (110) between a first position and a second position. A control rod (302) can extend between the control member (304) and a portion of the valve port (108). A control rod coupling (402) interacts with the control member (304) to cause a rotational or pivotal movement the control rod (302) through a predetermined angular arc in response to movement of the control member (304). A sealing face (404) formed on a second portion of the control rod (302) advantageously forms a seal with an orifice (316) that separates an input side of the valve port (108) from an output side. The seal can be formed when the control rod (302) is in a control rod sealed position.
    Type: Grant
    Filed: September 28, 2006
    Date of Patent: March 24, 2009
    Inventor: Walter Tuymer
  • Patent number: 7118088
    Abstract: To provide a fluid control valve which is capable of preventing or suppressing degradation of the accuracy of flow rate control dependent on the lift amount of a valve element from a valve seat. An expansion valve is configured such that a valve portion and a valve portion integrally formed with a valve element move to and away from a valve seat and a valve seat, respectively, simultaneously. Further, the expansion valve is configured such that a flow passage cross-section formed by a gap between the valve portion and the valve seat, and a flow passage cross-section formed by a gap between the valve portion and the valve seat have approximately the same size when the expansion valve is open.
    Type: Grant
    Filed: April 12, 2005
    Date of Patent: October 10, 2006
    Assignee: TGK Co., Ltd.
    Inventor: Hisatoshi Hirota
  • Patent number: 6622743
    Abstract: A surge prevention valve may be used to prevent the formation of an initial surge of high pressure. The valve may be located, for example, between a high pressure oxygen cylinder and a medical pressure regulator. The valve also may be used for other purposes. The surge prevention valve may have a housing with an inlet and an outlet. A seal unit may be used to close the main flow path from the inlet to the outlet, and a bleed passageway may be provided in the seal unit to bypass the main flow path. The valve may have an actuator for opening the bleed passageway and for moving the seal unit to open the main flow path. According to a preferred embodiment of the invention, a manual push-then-turn operation is used to open the valve. The actuator may be used to threadedly move the seal unit toward and away from the valve seat to close and open the main flow path. In addition, a valve rod may be provided for closing the bleed passageway.
    Type: Grant
    Filed: August 9, 1999
    Date of Patent: September 23, 2003
    Assignee: Allied Healthcare Products, Inc.
    Inventors: Gabriel S. Kohn, Kevin Donald Kroupa, David L. Boger
  • Patent number: 6325088
    Abstract: The present invention provides a method, apparatus and system for using sacrificial buckling pin technology for a reliable actuated safety relief valve and for a pilot valve system. The buckling pin fails at a predicted, predetermined system pressure through transfer of force exerted by the system pressure on a sensing piston or diaphragm to the buckling pin. The buckling pin failure triggers the release of a latch mechanism that releases the actuator assembly to slide away from the valve seat to initiate relief flow. The use of the buckling pin as a trigger for release of a latch provides for valves with high flow rates without the use of large, unmanageable buckling pins. The use of a buckling pin valve as a pilot valve to control a single or multiple relief valves operating together as a pressure relief system is preferred as particularly advantageous.
    Type: Grant
    Filed: November 17, 1999
    Date of Patent: December 4, 2001
    Inventor: Gary W. Scantlin
  • Patent number: 6237623
    Abstract: An improved self contained automatic bladder control device includes a valve assembly mount for releasibly receiving a valve assembly. The preferably cylindrical mount has a textured outer surface designed to interact with urethral tissue. Thus the mount can be placed nonsurgically into a urethra and in time it will be held against movement by the tissue interaction with the textured outer surface, yet the mount will still be removable without surgery. Two embodiments of valve assemblies are disclosed, each of which provides a sphincter-like operation of the bladder control apparatus. A first embodiment is designed to use Bernoulli's law to hold open the valve apparatus after a short period of muscle contraction. The second embodiment is designed to use the fact that the force generated by hydrostatic pressure is directly related to the area on which it impinges, to accomplish the desired valve holding period.
    Type: Grant
    Filed: January 26, 1998
    Date of Patent: May 29, 2001
    Assignee: HK Medical Technologies Incorporated
    Inventors: Andre A. Kulisz, Valery Migachyov
  • Patent number: 5491976
    Abstract: A valve for an automotive vehicle emission system is provided which includes a valve housing with an inlet communicating the valve housing with an air pump; an outlet fluidly communicating the valve with a catalytic converter, the outlet having a check valve preventing flow from an engine exhaust conduit through the valve to the air pump; an upper diaphragm in the valve housing creating a first chamber in the housing which is fluidly exposed to the inlet; a lower diaphragm in the housing creating a second chamber between itself and the first diaphragm, the lower diaphragm forming a third chamber between itself and the housing generally opposite the first chamber; a sealing wall located within the housing separating the second chamber from the inlet, the sealing wall having a surface forming a valve seat with the lower diaphragm, dividing the inlet from the second chamber; a spring urging the lower diaphragm toward the first chamber; and a valve stem connecting the upper and lower diaphragms wherein the air pr
    Type: Grant
    Filed: September 14, 1994
    Date of Patent: February 20, 1996
    Assignee: General Motors Corporation
    Inventors: Jeffrey A. Rock, Kenneth J. Dauer, William H. Pettit, Donald D. Stoltman, James O. Wilson
  • Patent number: 5301504
    Abstract: A combination valve assembly, particularly for a secondary air blower in internal combustion engines with controlled three-way catalyzer, the combination valve assembly comprises a valve housing having a valve inlet and a valve outlet, a pneumatically actuated valve arranged in the valve housing and having a valve member for locking and releasing a flow path between the valve inlet and the valve outlet, a return valve arranged in the housing downstream of the by-pass valve as considered in a flow direction and having a closing member formed as a leaf spring, a valve plate provided with openings and a stroke catcher limiting an opening stroke arranged so that the leaf spring located between the valve plate and the stroke catcher, a valve closing spring loading the valve member of the valve in a valve closing direction while a differential pressure between a valve inlet pressure and a surrounding pressure loads the valve member of the valve in a valve opening direction.
    Type: Grant
    Filed: February 5, 1993
    Date of Patent: April 12, 1994
    Assignee: Robert Bosch GmbH
    Inventors: Johannes-Gerhard Bertling, Claudius Muschelknautz
  • Patent number: 5249593
    Abstract: A fluid pressure relief system and method for a pressure vessel or tank (10) having a normal vent (16) with a first pilot operated safety valve (18) and an emergency vent (62) having a second pilot operated safety valve (25). A vapor recovery line (20) is connected to relief valve (18) and collected at a vapor storage container (21). A manway (22) on the pressure vessel (10) shown in FIG. 2 defines the emergency vent (62) and a main valve member (66) has a counterweight (74) thereon to urge main valve member (66) to a seated closed position on nozzle (60). The first pilot operated safety valve (18) for the normal vent (16) is shown in FIG. 7 and has a T-shaped body (142) with a main relief valve member (172) at one end of the body (142) mounted for movement in a generally horizontal direction and controlled by a diaphragm (176) at an opposite end of the body (142).
    Type: Grant
    Filed: January 11, 1993
    Date of Patent: October 5, 1993
    Assignee: Keystone International Holdings Corp.
    Inventors: Thomas F. Higgins, Michael D. McNeely
  • Patent number: 4889154
    Abstract: An automatic shut-off valve having a lower closing pressure than an opening pressure comprises a housing having a partition formed with a valve opening connecting the inlet to the outlet, a valve member movable in the outlet side of the partition to an open or closed position with respect to the valve opening, and a piston movable in the outlet side of the partition independently of the valve member and defining a chamber with the valve member. The piston is urged by a spring tending to close the valve member against the force of inlet pressure. The piston is formed with a passageway establishing communication between the engine chamber and the housing outlet, and has a larger cross-sectional area than the valve member, such that the valve member opens the valve opening at a predetermined inlet pressure and closes the valve opening at a lower inlet pressure.
    Type: Grant
    Filed: March 29, 1988
    Date of Patent: December 26, 1989
    Inventor: Peretz Rosenberg
  • Patent number: 4699171
    Abstract: In order to provide a multiple port relief valve which is pressure responsive in a highly effective manner so as to control communication between an inlet and a given outlet as a function of the prevailing fluid pressure, where the relief valve functions such that there is no flow at certain pressures, flow to a first outlet as a result of rapid pressure increase, and flow to a second outlet as a result of a gradual pressure increase, the relief valve includes a valve body defining a chamber having a fluid inlet and having a first fluid outlet and a second fluid outlet in fluid communication therewith. The relief valve also includes a first piston-like valve member disposed in the chamber for movement between a first position preventing fluid communication between the fluid inlet and the first fluid outlet and a second position accommodating fluid communication between the fluid inlet and the first fluid outlet.
    Type: Grant
    Filed: December 19, 1986
    Date of Patent: October 13, 1987
    Assignee: Sundstrand Corporation
    Inventor: Kenneth B. Sugden
  • Patent number: 4648421
    Abstract: A valve device for use in filling cartons includes a tubular housing containing a valve member comprising a closure part co-operating with a valve seat at the lower extremity of the housing, and a driving part movably received with clearance in the housing. During the latter part of the opening movement of the valve member against a spring, the clearance increases smoothly and considerably, and the driving part reaches a force equilibrium position at which the clearance is considerable. Two grooves formed in the housing and the valve member immediately below the annulus of sealing bound an annular enclosed space for receiving liquid squeezed out downwardly at the valve seat.
    Type: Grant
    Filed: March 30, 1983
    Date of Patent: March 10, 1987
    Assignee: Liquipak International B.V.
    Inventors: Nigel A. Chant, Richard W. E. Mosse, Kevin Bunce
  • Patent number: 4630642
    Abstract: For use in a turbocharger system wherein exhaust flow from the engine is caused to rotate an impeller and charge the intake of the engine with compressed air, a water injection system comprising a water reservoir, a first line connecting the reservoir to the intake from a point above the liquid in the reservoir, a second line extending from below the level of liquid in the reservoir to the intake of the impeller and a check valve in the second line. The check valve includes a valve body having an inlet and an outlet, a seat separating the inlet and the outlet, a valve member, and a spring external of the valve member and of the flow of water through the inlet, outlet and seat yielding urging the valve member into engagement with the seat. The check valve may also be utilized in a fuel system wherein a fuel pump directs fuel to electronically controlled fuel nozzles. The check valve is placed in the line between the fuel pump and the fuel nozzle.
    Type: Grant
    Filed: December 3, 1984
    Date of Patent: December 23, 1986
    Assignee: Tom McGuane Industries, Inc.
    Inventor: Charles A. Detweiler
  • Patent number: 4566635
    Abstract: A fuel injection nozzle for internal combustion engines, having a valve needle, which at the end of a pre-stroke directly or indirectly opens an auxiliary conduit, by way of which the fuel pressure acts upon a reservoir piston and a pressure shoulder which acts in the closing direction of the valve needle. As a result, the valve needle is temporarily returned to the valve seat and the closing pressure is notably increased. The subsequent primary injection phase is initiated at a correspondingly higher pressure, and the higher closing pressure continues effective until the end of the injection event, thereby bringing about an exact closure of the valve.
    Type: Grant
    Filed: April 13, 1984
    Date of Patent: January 28, 1986
    Assignee: Robert Bosch GmbH
    Inventor: Dietrich Trachte
  • Patent number: 4370102
    Abstract: A device for pumping fluid includes a main pump device and an auxiliary device integrally fixed thereto. The auxiliary device can function as a damper, cut-off valve, check valve and relief valve. The auxiliary device includes a first and second room separated by a diaphragm. The first room is connected to the fuel supply passage of the main pump device. One end of the outlet passage of the auxiliary device is connected to the first room by way of a valve mechanism consisting of a valve body and valve seat. The valve body is actuated by deforming of the diaphragm in response to the change of the fluid pressure within the first room. A relief passage is formed in the valve body to connect the first room with the second room. A relief valve such as a ball valve is placed in cooperation with the relief passage.
    Type: Grant
    Filed: January 23, 1981
    Date of Patent: January 25, 1983
    Assignees: Nissan Motor Company, Limited, Jidosha Denki Kogyo Kabushiki Kaisha
    Inventors: Michiaki Sasaki, Kiyokazu Yamamoto, Ko Hiratsuka
  • Patent number: 4346734
    Abstract: A locking device to keep two spaced apart positionable heads in place. The disclosed locking device can keep two hex shaped adjustable relief valve heads (34,44) in place. The locking device (10) is punched out of a flat thin sheet metal plate. An elongated opening (12) punched out in the plate has a length (14) which is greater than the furthest separation of the two adjustable heads (34,44). The in flat width (16) of the elongated opening (12) in the sheet metal plate is large enough to fit over the adjustable heads. During use, the plate is bent to decrease the effective width of the opening (12) so that it is smaller than the associated adjustable heads. The locking device (10) is then forced over the two heads (34,44) to engage a flat portion thereof and prevent relative movement.
    Type: Grant
    Filed: November 3, 1980
    Date of Patent: August 31, 1982
    Assignee: The Warner & Swasey Company
    Inventor: John H. Frank
  • Patent number: 4235211
    Abstract: A fuel pressure regulator for use in a fuel injection system for an internal combustion engine has a housing defining therein a fuel passage having upstream and downstream ends connected to a main fuel supply conduit and a fuel return pipeline, respectively. The fuel supply conduit is connected with fuel injectors at points upstream of the fuel pressure regulator. A first valve is provided in the fuel passage at a point downstream of a restriction also provided in the fuel passage. A fuel chamber is provided in the fuel passage between the restriction and the first valve. The first valve is opened when the fuel pressure in the fuel chamber exceeds a first predetermined pressure level to allow the fuel to flow from the fuel chamber to the return pipeline. A bypass fuel passage bypasses the restriction and has its downstream end connected to the fuel chamber.
    Type: Grant
    Filed: May 17, 1979
    Date of Patent: November 25, 1980
    Assignee: Nippondenso Co., Ltd.
    Inventor: Kazuyoshi Sugaya
  • Patent number: 4193418
    Abstract: An arrangement for the prevention of excess pressure in housings of shut-off valves with varying pressure loads, in which an independent chamber is provided with two facing openings. These are connected by pressure lines to pipe sockets connected to the shut-off valves. The facing openings are closed by seals which are, in turn, connected gas-tight by elastic elements. Another pressure line discharges into the chamber space located outside the elastic elements, and this pressure line is connected to the interior of the housing of the shut-off valves. The sealing elements which close the facing openings, brace each other through a spring, and the sealing elements are connected gas-tight by a bellows. A center section is located between the sealing elements. Through drill holes in the center section and in the sealing elements, the facing openings discharge into a space enclosed by the center section, the bellows and associated sealing element.
    Type: Grant
    Filed: September 2, 1977
    Date of Patent: March 18, 1980
    Assignee: Deutsche Babcock Aktiengesellschaft
    Inventor: Walter Meyer
  • Patent number: 3993361
    Abstract: A pressure protection valve includes a housing having first and second ends. A passageway is formed in the housing for interconnecting the ends to permit fluid to flow from the first to the second end. Also, the housing includes a first portion of the passageway adjacent the first end and a second portion of the passageway adjacent the second end. A pressure responsive element is provided in the first portion to respond to preselected pressure conditions for permitting and limiting the flow of fluid from the first to the second end. In addition, a check valve is provided in the second portion for permitting the flow of fluid from the first to the second end and for limiting the flow of fluid from the second to the first end.
    Type: Grant
    Filed: September 10, 1975
    Date of Patent: November 23, 1976
    Assignee: Wagner Electric Corporation
    Inventor: Raymond F. Stelzer
  • Patent number: 3976099
    Abstract: A rigid, multiple-passage, quick-disconnect coupling in which valves of a supply section of the assembly are moved to mechanically open valves in a receiver section for enabling pressurization of telescopic cylinder sections. Energization of the innermost cylinder section automatically actuates the valves for enabling pressurization of the remaining cylinder sections. The coupling sections have opposed valve surfaces substantially flush with the surrounding surfaces of the coupling sections.
    Type: Grant
    Filed: September 30, 1974
    Date of Patent: August 24, 1976
    Assignee: Western Gear Corporation
    Inventor: Duane K. Russell