With Mechanical Stop Against Reopening Patents (Class 137/465)
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Patent number: 10731771Abstract: A flow limiter valve assembly comprising a housing defined by an end cap and a guide base, a fluid inlet orifice provided in the base and a fluid outlet orifice in the circumferential wall of the housing, with a fluid flow path defined from the inlet orifice to the outlet orifice. The valve assembly further comprises a spool mounted in the base of the housing and arranged to be axially moveable relative to the housing end cap and biasing elements to bias the spool away from the end cap. When the spool is biased away from the end cap, the fluid flow path is defined by a gap between the end cap and the spool such that fluid can flow from the inlet orifice through this gap to the outlet orifice.Type: GrantFiled: January 12, 2017Date of Patent: August 4, 2020Assignee: HAMILTON SUNSTRAND CORPORATIONInventors: Maciej Sobieszek, Mateusz Gabka
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Patent number: 10310522Abstract: A control valve of an embodiment includes a disc coaxially in contact with a diaphragm, and a shaft configured to transmit a drive force in an axial direction caused by displacement of the diaphragm to a valve element. The diaphragm has a corrugated portion between a flat portion and the outer peripheral portion, the flat portion having a contact surface with which the disc is in contact. The corrugated portion includes substantially N+0.5 corrugations (N being a natural number) each protruding relative to a reference surface, the corrugations being formed between the outer peripheral portion and the flat portion, the reference surface being one surface of the outer peripheral portion. A height of each of the N corrugations of the corrugated portion is smaller than a height of the flat portion, the heights each being a height relative to the reference surface in an unloaded condition.Type: GrantFiled: August 16, 2016Date of Patent: June 4, 2019Assignee: TGK CO., LTD.Inventors: Ryosuke Satake, Takeshi Kaneko
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Patent number: 9304517Abstract: A flow control device is capable of performing accurate flow control over a wide range of temperatures by using a housing made of resin with superior chemical resistance. The flow control device includes: a housing made of resin; a diaphragm which is supported in the housing so as to split the housing into a gas chamber side to which gas is introduced and a fluid chamber side through which fluid passes, and is activated by the differential pressure between the gas chamber side and the fluid chamber side; and a valve body which operates in integration with the diaphragm to regulate the flow of the fluid introduced into the fluid chamber side. The gas chamber side includes a holding member which holds the diaphragm between itself and an opposing surface of the fluid chamber side opposite to the diaphragm, the holding member being screwed to the inner peripheral wall of the gas chamber side through a screw part.Type: GrantFiled: January 23, 2013Date of Patent: April 5, 2016Assignee: SURPASS INDUSTRY CO., LTD.Inventors: Kazuki Hirai, Hiroki Igarashi
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Patent number: 8028715Abstract: The present invention provides a check valve for use in a vacuum sewage pipe. The check valve includes a body having a sewage inlet and a sewage outlet to be coupled to the vacuum sewage pipe, a flap valve element disposed in the body and rotatably supported by a first shaft, and a closing mechanism. The closing mechanism can keep the flap valve element in a closed state so as to allow the flap valve element to function as a gate valve. The closing mechanism can also limit an opening degree of the flap valve element so as to allow the flap valve element to function as a check valve.Type: GrantFiled: October 19, 2006Date of Patent: October 4, 2011Assignee: Ebara CorporationInventors: Osamu Shimizu, Yuji Hiroto, Keisuke Ikeda, Fuyuki Ogaki
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Patent number: 6880767Abstract: A two-handle cleaning lance includes a pair of switches which must be held closed by an operator to allow high pressure water to be directed to a discharge nozzle. A dump valve is selectively actuated to dump the high pressure water to a dump nozzle at which it will enter the environment at a much reduced pressure. The dump valve is operated by a control which monitors that the two switches are both held closed. If either switch is released, then the dump valve is moved to a dump position. The present invention ensures that an operator does not disable one of the two switches such as by taping it closed. The dump valve will not move back to its actuated position until both switches have been released and have moved to an open position.Type: GrantFiled: January 24, 2003Date of Patent: April 19, 2005Assignee: NLB Corp.Inventor: Matthew O. Herhold
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Patent number: 5860446Abstract: A method and apparatus for safely controlling fluid flow comprises a safety control valve that automatically stops fluid flow upon a fluid pressure failure, requires two-handed manual operation to open the valve, and the valve being biased to prevent being left in the open position in the absence of fluid pressure. The safety control valve comprises a valve body that coaxially receives therein a slidable spool manually operable in an axial direction between a closed valve position and an open valve position. The valve further comprises a spring and a spring biased coaxial safety piston capable of axial movement along the spool and being pneumatically connected to a fluid supply line. In the absence of fluid pressure, the spring biases a safety piston against a contact surface of the spool so as to bias the spool into the closed position thereby preventing fluid flow through the valve.Type: GrantFiled: March 12, 1996Date of Patent: January 19, 1999Assignee: Climax Portable Machine Tools, Inc.Inventor: Christopher C. Hunt
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Patent number: 5709239Abstract: A compact, automatic mechanical fluid shut-off device which can detect a sustained leak in a pipe as well as a pipe burst and automatically shuts off fluid flow in the pipe. The device is detachable, easy to install, and easy to retrofit into existing pipes. The device employs a unique combination of bias mechanism and fluid flow channels to achieve an automated method of stopping a fluid flow when there is an abnormal fluid flow in the pipe due to pipe burst or sustained leak.Type: GrantFiled: November 27, 1995Date of Patent: January 20, 1998Inventors: Frank Macalello, Christine Macalello, Ed Sapigao
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Patent number: 4224962Abstract: A change valve for sanitary engineering to select either a bath tub or shower head for discharge of water includes a telescoping connection between a valve actuating device and a valve element to achieve reliable operation in the presence of low water pressures.Type: GrantFiled: August 16, 1978Date of Patent: September 30, 1980Assignee: ITT Industries, Inc.Inventor: Willy Orszullok
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Patent number: 4044790Abstract: A dump valve which automatically closes (re-arms) when the system pressure reaches a predetermined level.Type: GrantFiled: May 27, 1976Date of Patent: August 30, 1977Assignee: McDonnell Douglas CorporationInventor: Normand N. Rodrigue
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Patent number: 3933444Abstract: A flash back arrestor for use in gas supply lines. The arrestor includes an elongated passageway through which the gases flow in one direction and through which the flash back must pass in the reverse direction. A pressure-actuated valve at the inlet end of the passageway is actuated by pressures from the flash back at the discharge end of the passageway. The valve consists of a valve member in the form of a piston freely movable under the influence of flash back pressures against a valve seat at the inlet to the passageway. The valve member carries a locking arrangement which moves under the influence of the flash back to latch the valve member with a biasing force to the closed position after a flash back occurs. Additionally, a second valve is provided actuated by the flash back to vent the flash back to the atmosphere. A separate flow actuated check valve prevents backflow to the gas supply tank in the event the flow direction should reverse, not caused by a flash back.Type: GrantFiled: April 29, 1974Date of Patent: January 20, 1976Assignee: Emerson Electric Co.Inventor: Charles Ray Kilgore