With Valve Closing Bias Patents (Class 137/505.37)
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Patent number: 11946551Abstract: A first valve mechanism is a valve mechanism provided in a flow path coupled to a liquid ejecting head that ejects a liquid, and including a valve that opens/closes the flow path, a first communication liquid chamber that communicates with the flow path, and a first pressure receiving body that converts a pressure difference between a pressure of the first communication liquid chamber and a reference pressure into an operating force of the valve, in which a threshold pressure of the first communication liquid chamber for determining opening/closing of the valve is variable.Type: GrantFiled: May 27, 2020Date of Patent: April 2, 2024Assignee: Seiko Epson CorporationInventors: Yukihiro Hanaoka, Toshiro Murayama, Daiki Tatsuta
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Patent number: 10795384Abstract: A unit for regulating or controlling a fluid pressure has a valve housing with an inlet and an outlet. A switching film is disposed in the valve housing and switches at pressure differences of 1 mbar to 250 mbar for regulating, opening or blocking a flow of a fluid from the inlet to the outlet. The switching film is formed of a fluorine and carbon containing polymer material. The switching film has a plate-shaped flat body with a bending region and has a central closure region surrounded by the bending region. The bending region, when switching the switching film, moves the central closure region relative to a valve seat of the valve housing in an axial direction of the plate-shaped flat body toward or away from the valve seat by a low-stretch bending movement. A switching film for such a unit is provided also.Type: GrantFiled: November 6, 2017Date of Patent: October 6, 2020Assignee: MANN+HUMMEL GmbHInventors: Volker Kuemmerling, Thomas Jessberger, Lukas Bock
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Patent number: 10152065Abstract: A valve includes an inlet unit including an inlet hole into which a fluid is introduced, a pressure adjusting unit which adjusts a pressure of the fluid introduced through the inlet unit, and a discharging unit having an opening and closing member which selectively discharges the fluid which had its pressure adjusted, and a water outlet hole which discharges the fluid passing through the opening and closing member to the outside, wherein a cross-sectional area of the inlet hole is greater than a cross-sectional area of the water outlet hole and a flow direction of a fluid from the pressure adjusting unit to the opening and closing member and a flow direction of a fluid from the opening and closing member to the water outlet hole are perpendicular to each other.Type: GrantFiled: November 28, 2016Date of Patent: December 11, 2018Assignee: BITRON IND. CHINA CO., LTD.Inventor: Dae Hong Ok
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Patent number: 9869602Abstract: A pipeline leak detection device for detecting leaks in a pipe includes a sensor assembly guided into a pipe to detect evidence of a leak, and a position assessing device provides an indication of a location of the sensor assembly. The sensor assembly may be a hydrophone, and the position assessing device may be a guide wire with markings for measuring lengths of the guide wire, or a transmitter. An injector plug can be inserted in an access port of the pipe to create a liquid tight seal for insertion of the sensor assembly. A pressurizing device may also be connected to the access port to pressurize the pipe.Type: GrantFiled: December 16, 2014Date of Patent: January 16, 2018Inventor: Darren E. Merlob
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Patent number: 9684315Abstract: A control valve includes a poppet valve moving in an axial direction relative to a seat hole so as to change a flow-path cross-sectional area of the seat hole and a spring disc biasing the poppet valve in a valve opening direction against the return spring. The spring disc includes: a secondary-pressure receiving surface being a portion moving along with a movement of the poppet valve, the secondary-pressure receiving surface configured to receive secondary pressure introduced to the secondary port; and a pilot-pressure receiving surface configured to receive pilot pressure serving as a reference pressure. The spring disc deforms elastically in accordance with pressure difference between the secondary pressure and the pilot pressure to cause the poppet valve to move in the axial direction.Type: GrantFiled: December 3, 2013Date of Patent: June 20, 2017Assignee: KYB CorporationInventors: Yoshinari Nakamura, Tooru Takeuchi
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Patent number: 8944097Abstract: In a decompression valve, a valve mechanism housed in a body has a valve body that can be seated on a valve seat facing a valve chamber into which high pressure fluid is introduced, and a valve shaft that has one end linked to a pressure receiving member operable in association with pressure of a decompression chamber communicating with a valve hole surrounded by the valve seat and that extends through the valve hole while having the other end facing a back pressure chamber communicating with the decompression chamber, and the valve body is fitted around the outer periphery of the valve shaft.Type: GrantFiled: February 10, 2010Date of Patent: February 3, 2015Assignee: Keihin CorporationInventor: Hiroaki Yamamoto
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Patent number: 8869827Abstract: A communication hole 17, which communicates with a primary-side port 15 and a secondary-side port 16, is opened and closed by a valve element 21 contacting with a valve seat 18, and a spring force in a direction of contacting with the valve seat 18 is applied to the valve element 21 by a valve spring 25. A pressure-regulating diaphragm 27 is mounted in a housing 11 opposite the valve element 21, and a spring force in a direction of opening the valve element 21 is biased to the pressure-regulating diaphragm 27 by a pressure-regulating spring 43. A tip face 49 that opens and closes a relief hole 47 is provided, and a stem 47 that converts, to the valve element 21, a movement of the pressure-regulating diaphragm 27 toward the valve element 21 is provided in the valve element 21.Type: GrantFiled: September 25, 2008Date of Patent: October 28, 2014Assignee: Koganei CorporationInventor: Takeshi Yamauchi
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Patent number: 8864106Abstract: Valve seat apparatus having positive retention for use with fluid control devices are described herein. An example valve seat apparatus includes a metallic ring and an elastomeric ring coupled to the metallic ring and having a sealing surface to sealingly engage a flow control member of the fluid control device. At least a portion of an outer surface of the elastomeric ring includes an annular lip to sealingly engage an annular recess of a body of the fluid control device.Type: GrantFiled: December 3, 2008Date of Patent: October 21, 2014Assignee: Emerson Process Management Regulator Technologies, Inc.Inventors: Tony Alan Durant, Samuel Harold Larsen, Kenneth Roger Schimnowski
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Publication number: 20140238509Abstract: A cylinder valve comprising a body including a mounting end for attachment in the opening of a pressurized fluid cylinder, a internal withdrawing circuit comprising a first end located at the mounting end and a second end located at an outlet port located in the body, the withdrawing circuit comprising, an isolation valve and a regulating device for regulating selectively the flowrate and/or the pressure of the fluid flowing in the withdrawing circuit, the isolation valve and the regulating device being controlled by manual actuating organ(s) located on the body, the actuating organ(s) controlling the regulating device being mobile relative to the body between a first position setting a flow rate or a regulated pressure to defined minimum value and at least a second position setting a flow rate or a regulated pressure to a defined maximum value.Type: ApplicationFiled: February 28, 2014Publication date: August 28, 2014Applicant: L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges ClaudeInventors: Marco Arzenton, Silvano Bendazzoli, Ivan Pezzo
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Patent number: 8679694Abstract: A fluidic control system includes featured layers. The featured layers include two or more features which collectively form at least one functional component.Type: GrantFiled: March 21, 2008Date of Patent: March 25, 2014Assignee: Societe BicInventors: Joerg Zimmermann, Jean-Louis Iaconis, Duhane Lam, Jeremy Schrooten, Gerard F. McLean
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Patent number: 8485213Abstract: An example loading regulator having an internal relief valve apparatus includes a body having a loading diaphragm disposed between a first casing and a second casing. The first casing and a first side of the loading diaphragm define a first chamber and the second casing and a second side of the loading diaphragm define a second chamber. A relief valve assembly is coupled to the loading diaphragm. The relief valve assembly includes a relief valve seat having an aperture that forms a passageway to fluidly couple the first chamber and the second chamber and a relief valve plug movably coupled to the relief valve seat. The relief valve seat is to move relative to the relief valve plug to a bleed position to allow the flow of fluid between the first chamber and the second chamber in response to an outlet pressure substantially greater than a pressure at which the loading regulator enters a lock-up condition.Type: GrantFiled: December 17, 2008Date of Patent: July 16, 2013Assignee: Emerson Process Management Regulator Technologies, Inc.Inventors: James Chester Hawkins, David Edward Woollums, Tung Kim Nguyen, Gregory Lawrence Foust
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Patent number: 8327877Abstract: The present invention relates to a pressure reducing apparatus. A diaphragm made from an elastic material is provided in the interior of a body. The diaphragm includes a main body portion having a seat member that is capable of being seated on an inner tubular member of the body, a retaining portion disposed on an outer peripheral side of the main body portion and which is slidably displaceable with respect to the inner tubular member, and a skirt that is retained on a flange of the body. Additionally, by flexing of the skirt by means of an elastic force of a spring, the seat member thereof separates away from the inner tubular member.Type: GrantFiled: February 5, 2009Date of Patent: December 11, 2012Assignee: SMC Kabushiki KaishaInventors: Shinichi Ito, Michihiro Hanada
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Patent number: 8327876Abstract: There is provided a fluid controller having an enhanced vibration preventing characteristic without affecting pressure controlling operations. A valve element 4 is moved with respect to a valve seat 3 due to a change of balance between a fluid pressure acting on a diaphragm 10 and an elastic force of a pressure-setting spring 13, thereby controlling a pressure of a fluid. A vibration prevention member 17 is placed in a disk-shaped movable member 12 which moves integrally with the diaphragm 10. The vibration prevention member 17 includes a casing which incorporates therein a weight member interposed between elastic members.Type: GrantFiled: January 15, 2008Date of Patent: December 11, 2012Assignee: Fujikin IncorporatedInventor: Mutsunori Koyomogi
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Patent number: 8087428Abstract: A two-stage regulator having a piston situated in a first stage for substantially reducing high pressures introduced into the regulator. The reduced pressure is exerted against the second stage that includes a plunger-actuated diaphragm that urges an actuator to open a ball valve at a selected pressure to allow fluid to flow out of the regulator at a desired reduced pressure.Type: GrantFiled: December 7, 2007Date of Patent: January 3, 2012Assignee: Beswick Engineering Co., Inc.Inventors: Paul R. Beswick, Gary A. Treadwell
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Patent number: 7905247Abstract: The invention relates to a re-configured valve design to accommodate a high volume of product in the delivery system and the dispensation of product upon the application of a predetermined vacuum condition on the downstream side of the valve.Type: GrantFiled: June 20, 2008Date of Patent: March 15, 2011Assignee: Praxair Technology, Inc.Inventor: Serge Campeau
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Publication number: 20100269925Abstract: A spring seat for self aligning a bias-open or bias-close spring is disposed within a tubular control element of a gas regulator and designed to reduce side loading of the spring, which can cause the spring to prematurely fail. The spring seat can comprise a spring seat adaptor and a seat ring. The spring seat adaptor is fixed inside of the tubular control element and the seat ring is movably mounted on the spring seat adaptor via a ball and socket type joint. The movable seat ring is engaged by the spring and adapted to be self-aligned through three-dimensional displacement relative to the spring seat adaptor via the ball and socket joint.Type: ApplicationFiled: April 21, 2010Publication date: October 28, 2010Applicant: EMERSON PROCESS MANAGEMENT REGULATOR TECHNOLOGIES, INC.Inventors: Daniel G. Roper, Douglas J. Scheffler, Harold J. McKinney
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Publication number: 20100243080Abstract: A gas pressure regulator comprises a main body having a first, gas inlet pipe and a second, gas outlet pipe, a calibrated gas passage through which gas flows from the first pipe to the second pipe, a shutter housed at least partially in the main body and mobile lengthwise along a first defined line to adjust the opening of the calibrated passage, a device for actuating the shutter and a regulator spring unit opposing the movement of the shutter.Type: ApplicationFiled: June 4, 2010Publication date: September 30, 2010Applicant: FISHER CONTROLS INTERNATIONAL LLCInventors: Stefano Zecchi, Andrea Monti
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Publication number: 20100006160Abstract: The present invention relates to a pressure reducing apparatus. A diaphragm made from an elastic material is provided in the interior of a body. The diaphragm includes a main body portion having a seat member that is capable of being seated on an inner tubular member of the body, a retaining portion disposed on an outer peripheral side of the main body portion and which is slidably displaceable with respect to the inner tubular member, and a skirt that is retained on a flange of the body. Additionally, by flexing of the skirt by means of an elastic force of a spring, the seat member thereof separates away from the inner tubular member.Type: ApplicationFiled: February 5, 2009Publication date: January 14, 2010Applicant: SMC Kabushiki KaishaInventors: Shinichi ITO, Michihiro HANADA
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Patent number: 7556057Abstract: A pressure regulator for dispensing CO2 gas from a pressurized cylinder which has a reduced probability of freezing when liquid carbon dioxide is converted to the gaseous phase. A plunger which is configured to increase the length of the gas flow path between the regulator inlet and the regulator outlet, and thus to allow liquid CO2 more time to convert to a gas before egressing from the regulator. In the preferred embodiment orifices are provided through the plunger head and spaces are provided about the periphery of the plunger head, which allow the CO2 liquid to flow from the underside of the plunger through the plunger head, over the top of the plunger and about the side of the plunger head before egressing through the regulator outlet.Type: GrantFiled: August 28, 2006Date of Patent: July 7, 2009Assignee: D & S Product Solutions Inc.Inventor: Steven Metcalfe
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Publication number: 20090007973Abstract: A device for regulating the delivery pressure of gases includes a valve unit having at least one valve seat and a respective closure element displaceable along an axis with respect to the valve seat which is controlled by a diaphragm. The device further includes a first spring which acts on the diaphragm in order to subject it to a preselected resilient load. A second spring is selectively activated to exert an additional resilient load on the diaphragm. The device includes a handle associated with the first and second springs in order to impose selectively the desired delivery pressure value, between a minimum value and a maximum value of pre-calibration, the pressure value being proportionally correlated with a predetermined resilient load exerted on the diaphragm.Type: ApplicationFiled: June 20, 2005Publication date: January 8, 2009Inventor: Michele Benvenuto
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Patent number: 7418973Abstract: A pressure regulator comprising a body portion having an inlet port, an outlet port, and a flow passage positioned therebetween is provided. A valve member and a valve seat are positioned in the flow passage. A spring is coupled to the valve member to urge the valve member along an axis towards the valve seat, wherein the flow passage is substantially closed when the valve member engages with the valve seat. The spring has an extended segment in contact with a fixed surface, whereby the extended segment restricts displacement of the spring in a direction substantially perpendicular to the axis.Type: GrantFiled: November 8, 2005Date of Patent: September 2, 2008Assignee: ITT Manufacturing Enterprises, Inc.Inventor: Gary Ellis Graham
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Patent number: 7192665Abstract: A regulator for use with fuel cells, which is mounted in a pressure controller of a fuel cell system, has a first diaphragm flexible under the pressure of pilot air supplied as an oxidizing agent to a pilot chamber, a second diaphragm flexible under the pressure of a hydrogen-containing gas flowing through a fluid passage, and a rod connected to a valve head. The spring force of a first spring is set to a value greater than the spring force of a second spring. The regulator is of a normally closed type in which the valve head is seated on a valve seat when the pilot air is not supplied to the pilot chamber.Type: GrantFiled: December 1, 2003Date of Patent: March 20, 2007Assignee: Keihin CorporationInventors: Yoji Nakajima, Kazuki Ishikawa, Takashi Yoshida, Katsumi Sahoda, Kouji Miyano
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Patent number: 7157168Abstract: A back pressure chamber is defined at an end of a rod for acting in a direction to cancel out a pressure applied to a valve head, and an aspirator chamber is defined closely to the valve head for developing a pressure lower than a secondary pressure due to a suction caused by a nozzle. The rod has a first communication hole and a second communication hole that are defined therein which provides fluid communication between the back pressure chamber and the aspirator chamber.Type: GrantFiled: December 1, 2003Date of Patent: January 2, 2007Assignee: Keihin CorporationInventors: Yoji Nakajima, Kazuki Ishikawa, Takashi Yoshida, Katsumi Sahoda, Kouji Miyano
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Patent number: 7021329Abstract: A vaporizing pressure regulator is provided, comprising: a valve body having a flow path therethrough and a pressure responsive valve carried in the flow path to regulate the flow of a fluid; and a heat source operatively associated with the valve body to heat fluid in the flow path by thermal conduction through a portion of the valve housing. In another aspect of the invention, heating is enhanced by providing power to the heat source proportional to the difference between a measured temperature indicative of the temperature of the fluid and a predetermined temperature.Type: GrantFiled: June 11, 2003Date of Patent: April 4, 2006Assignee: ITT Manufacturing Enterprises, Inc.Inventors: Daniel Neal Hyde, Christopher James Thomson