Bypass Or Relief Valve Part Carried By Or Carries Distributor Part Patents (Class 417/296)
  • Patent number: 10385835
    Abstract: A pressure calibration device can include certain features that allow it to be used with a variety of hydraulic and pneumatic systems. A pressure calibration device can be configured to provide pressure or vacuum, and can have a mode selector for selecting to provide pressure or vacuum. A pressure calibration device can have a volume adjuster configured to modify pressures for hydraulic or pneumatic systems. A pressure calibration device can have a pressure release valve and a bleed valve for adjusting pressure values.
    Type: Grant
    Filed: April 8, 2016
    Date of Patent: August 20, 2019
    Assignee: King Nutronics Corporation
    Inventors: Amir Gnessin, Robert T. Welther
  • Patent number: 8366409
    Abstract: A reciprocating pump is provided that does not leak working liquid to the exterior. A communicating tube 14 extends over both a first manifold 4 and a second manifold 5 such that a reciprocating member 1 constitutes a part of a reciprocating cylinder 2. An auxiliary O-ring 24 is disposed on connection surfaces 13a and 13b of a first manifold 4 and a second manifold 5 outside of the communicating tube 14 in the radial direction so that liquid leaking from at least one of a first O-ring 15 between the first manifold 4 and the periphery of the communicating tube 14 and a second O-ring 16 between the second manifold 5 and the periphery of the communicating tube 14 toward the exterior is blocked.
    Type: Grant
    Filed: June 28, 2010
    Date of Patent: February 5, 2013
    Assignee: Maruyama Mfg. Co., Inc.
    Inventor: Tetsunari Ochiai
  • Patent number: 8272849
    Abstract: A process for sizing an axial length of a throat in a jet pump, where an exponential relationship between mixing and kinetic energy dissipation of the primary jet is plotted in terms of a non-dimensional parameter on a graph which ranges from around 1.0 at an axial length of zero to a ratio of less than 0.1 at the minimal axial length of the throat to produce complete mixing between the primary and secondary fluids. This non-dimensional parameter is referred to as the Stein number.
    Type: Grant
    Filed: October 1, 2009
    Date of Patent: September 25, 2012
    Assignee: Florida Turbine Technologies, Inc.
    Inventor: Elizabeth V Stein
  • Patent number: 8206131
    Abstract: A housing has a compression chamber and a first passage, through which the compression chamber communicates with an accumulation chamber. A discharge valve is provided in the first passage and configured to open to supply fuel from the compression chamber to the accumulation chamber in response to increase in pressure in the compression chamber. A second passage is configured to communicate the accumulation chamber with the compression chamber via the discharge valve. A valve element allows fuel flow from the accumulation chamber to the compression chamber. A biasing unit biases the valve element to seat the valve element on a valve seat of the second passage. The sidewall of the valve element and the inner wall defining the second passage therebetween define a throttle midway through the second passage for restricting fuel flow from the accumulation chamber to the compression chamber.
    Type: Grant
    Filed: September 16, 2008
    Date of Patent: June 26, 2012
    Assignees: Nippon Soken, Inc., Denso Corporation
    Inventors: Yoshihito Suzuki, Masayuki Kobayashi, Hiroshi Inoue
  • Patent number: 8057193
    Abstract: A compressor arrangement includes a compressor housing, an intake region defined in the compressor housing, a control pressure connection in communication with the intake region, a control pressure chamber in communication with the control pressure connection, a control piston disposed in the compressor housing beneath the control pressure chamber, a guide element securing the control piston in the compressor housing, at least one sealing element disposed between the control piston and the guide element, and a feed pressure connection defined in the compressor housing to supply compressed air beneath the control piston. In a closed position, the control piston closes the feed pressure connection when in the closed position. In an opened position, the control piston opens the feed pressure connection when in the opened position, thereby permitting air to vent from the feed pressure connection via a venting connection.
    Type: Grant
    Filed: April 5, 2007
    Date of Patent: November 15, 2011
    Assignee: Knorr-Bremse Systeme fur Schienenfahrzeugh GmbH
    Inventor: Engelbert Köck
  • Patent number: 7841841
    Abstract: A flow prioritizing system includes a regulating valve and a flow prioritizing valve. The regulating valve receives a first portion of the fluid supplied from a fuel supply pump, and is responsive to a control pressure to selectively allow or prohibit flow to secondary loads. The flow prioritizing control valve is responsive to fluid pressure representative of delivery pump discharge pressure to control the control pressure to which the regulating valve is responsive.
    Type: Grant
    Filed: August 23, 2007
    Date of Patent: November 30, 2010
    Assignee: Honeywell International Inc.
    Inventors: Eric M. Arnett, Paul W. Futa, Jr.
  • Publication number: 20100028170
    Abstract: The invention relates to a device for delivering a liquid, which device comprises a pump, and an anti-siphon valve external to the pump and having an inlet channel connected to the outlet duct of the pump, and an outlet channel, between which channels a seat and a moving member are disposed that are suitable for co-operating together and that define, between the inlet channel and the outlet channel, a leaktight liquid flow zone, said moving member being suitable for going from an opening position making it possible for liquid to flow through said flow zone, to a closure position in which the moving member comes into contact with the seat of the valve and prevents any flow through said flow zone, said moving member being subjected to the pressure of a reference chamber that is not in fluid communication with the outlet channel. Application to obtaining a pump for injecting liquid medication.
    Type: Application
    Filed: September 3, 2007
    Publication date: February 4, 2010
    Applicant: DEBIOTECH SA
    Inventors: Niklaus Schneeberger, Véronique Vallet, Eric Chappel
  • Publication number: 20100021312
    Abstract: Pump apparatus and method. The pump can include a valve assembly and a diaphragm. In some embodiments, the diaphragm can include a convolute that can deform in order to increase a volume of a pumping chamber to provide an internal fluid bypass when a pressure in the pumping chamber exceeds a bypass pressure. In some embodiments, the pump can include a fluid reservoir at least partially defined by a wall with a flow-restrictive conduit in fluid communication with an outlet chamber. A shut-off switch can include an actuator in fluid communication with the fluid reservoir. The fluid reservoir and the flow-restrictive conduit can substantially isolate the shut-off switch from pressure pulses in the outlet chamber.
    Type: Application
    Filed: September 30, 2009
    Publication date: January 28, 2010
    Inventor: Humberto V. Meza
  • Patent number: 7413415
    Abstract: Reciprocating electromagnetic micro-pump, particularly for small electrical appliances, whose pumping chamber is defined by a tubular element, movable axially, against the action of a contrasting spring, between an advanced position of normal operation of the pump and a retracted position in which the outlet fitting of the pump is placed in communication with the cavity of the hollow body within which is movable in reciprocating fashion the core bearing the piston and which in turn communicates with the inlet fitting of the pump, in such a way as to absorb and anomalous overpressures generated, in operation, downstream of the pump.
    Type: Grant
    Filed: February 12, 2004
    Date of Patent: August 19, 2008
    Assignee: Ceme S.P.A.
    Inventor: Bruno Buzzi
  • Patent number: 7140847
    Abstract: The present invention relates to the integration of a TMP with the associated bypass line and valves so that a single sub-assembly is created. The housing of the TMP is significantly modified to accommodate the associated equipment necessary for constructing a high-vacuum system.
    Type: Grant
    Filed: August 11, 2004
    Date of Patent: November 28, 2006
    Assignee: The BOC Group, Inc.
    Inventors: Michael S. Boger, Daimhin Paul Murphy, Christopher M. Bailey, Yoshihiro Enomoto
  • Patent number: 7052243
    Abstract: A pressure maintenance assembly for a domestic water well system. The assembly comprises a pressure maintenance valve having an inlet side and an outlet side, a pressure tank in fluidic communication with the outlet side, and a calibrated bypass. When the valve is closed, the calibrated bypass provides fluidic communication between the inlet side and the outlet side. The size of the calibrated bypass and the pressure tank are adapted and constructed to permit a flow rate between the inlet side and the outlet side that will fill the pressure tank in a time interval less than twice the time required to pump a volume of water that will dissipate heat generated by the pump when it is turned on.
    Type: Grant
    Filed: September 7, 2004
    Date of Patent: May 30, 2006
    Assignee: Flexcon Industries
    Inventors: Gerard Duggan, Robert Lombari, David van Houten
  • Patent number: 6494687
    Abstract: A metering device for liquids, especially for viscous liquids, preferably liquids which are to be metered under sterile conditions, with a plurality of metering pumps which can be simultaneously actuated. To achieve an optimized mode of operation, it is provided that the surfaces on the bottom of the pump holding plate and the top of the metering channel plate are made as adjoining sealing surfaces, forming a seal, that, in the pump holding plate, there is a bypass channel with outlet openings in the sealing surface on the bottom of the pump holding plate for each metering pump and that by the relative displacement of the pump holding plate and the metering channel plate with respect to one another, the outlet openings of the bypass channel can be moved into a position in which the bypass channel connects the respective metering channel to the respective supply channel in the metering channel plate.
    Type: Grant
    Filed: March 16, 2001
    Date of Patent: December 17, 2002
    Assignee: Brand GmbH + CO KG
    Inventors: Andreas Lang, Peter H. Mahler
  • Publication number: 20010055533
    Abstract: A metering device for liquids, especially for viscous liquids, preferably liquids which are to be metered under sterile conditions, with a plurality of metering pumps which can be simultaneously actuated. To achieve an optimized mode of operation, it is provided that the surfaces on the bottom of the pump holding plate and the top of the metering channel plate are made as adjoining sealing surfaces, forming a seal, that, in the pump holding plate, there is a bypass channel with outlet openings in the sealing surface on the bottom of the pump holding plate for each metering pump and that by the relative displacement of the pump holding plate and the metering channel plate with respect to one another, the outlet openings of the bypass channel can be moved into a position in which the bypass channel connects the respective metering channel to the respective supply channel in the metering channel plate.
    Type: Application
    Filed: March 16, 2001
    Publication date: December 27, 2001
    Inventors: Andreas Lang, Peter H. Mahler
  • Patent number: 5980219
    Abstract: In a piston-type compressor, especially for generating compressed air in motor vehicles, there is a suction plate on the underside of a valve support, clamped between the cylinder and cylinder head, facing the compressor piston. The suction plate consists of an active and an inactive section. The active section, preferably consisting of a tongue-shaped active plate fitted in the center, operates in relation to suction apertures in the valve support while the inactive section of the suction plate has at least one delivery aperture in active connection with at least one delivery aperture in the valve support. The suction plate takes the form of a disc, thus virtually eliminating waste space. The suction plate can be fitted between the cylinder and the valve support without additional components; when used in an energy-saving system, the suction plate can be rotated to produce differing degrees of overlap between suction and delivery apertures.
    Type: Grant
    Filed: February 6, 1998
    Date of Patent: November 9, 1999
    Assignee: Knorr-Bremse Systems fur Nutzfahrzeuge GmbH
    Inventor: Dieter Spurny
  • Patent number: 5950669
    Abstract: The invention relates to a pressure valve for installation in a supply line between a pump work chamber of a fuel injection pump and an injection site in an internal combustion engine to be supplied thereby. A valve body is provided with a valve seat and has a through conduit in which a pressure valve closing member is guided. A check valve is disposed in a work chamber, wherein the check valve and the pressure valve closing member are movable relative to one another, in the through conduit. A restoring spring on the injection side causes the check valve to rest in the through bore and on the pump chamber side disposes the pressure valve closing member to the valve seat of the valve body.
    Type: Grant
    Filed: February 19, 1998
    Date of Patent: September 14, 1999
    Assignee: Robert Bosch GmbH
    Inventors: Wolfgang Fehlmann, Ruben-Sebstian Henning, Walter Fuchs
  • Patent number: 5871338
    Abstract: The invention pertains to a vacuum pump (1) with a closable line (63, 102) through which gas ballast can be fed into the pump chamber (8, 9); to eliminate the danger that a recipient hooked up to the vacuum pump may be charged with air in the event of a pump failure, the invention proposes that the line be equipped with a control valve (59, 60, 61; 98, 99; 109, 110) to regulate the gas ballast feed as a function of operating conditions, such that the line is closed in the event of a pump failure.
    Type: Grant
    Filed: January 29, 1996
    Date of Patent: February 16, 1999
    Assignee: Leybold Aktiengesellschaft
    Inventors: Thomas Abelen, Lutz Arndt, Peter Muller
  • Patent number: 5700136
    Abstract: A pump which has a digitally controlled internal by-pass valve. The pump includes a housing which has a pumping chamber that contains a piston which pumps fluid from an inlet port to an outlet port of the housing. The pump also has an intake valve that moves to an open position when the pump draws in fluid and moves to a closed position when the piston pumps the fluid through the outlet port. The intake valve can be maintained in the open position by a separate hydraulic system so that the piston pumps fluid back through the inlet port and by-passes the outlet port. The separate hydraulic system includes a three-way solenoid control valve which directs fluid to the intake valve to open the valve. The control valve may contain a pair of solenoids which latch an internal spool to control the flow of fluid to the intake valve. The spool can be latched into position by a digital pulse that is provided by an electrical controller.
    Type: Grant
    Filed: July 23, 1996
    Date of Patent: December 23, 1997
    Assignee: Sturman Industries
    Inventor: Oded E. Sturman
  • Patent number: 5588809
    Abstract: Metering pumps for the metered feed of liquids are fitted with an intake valve built into an intake line from an intake container, a pump chamber downstream of it with a pumping component altering its displacement volume, a pressure valve leading to the metering connector and a vent and by-pass valve built into a return line leading to the intake container. In order to keep the quality of by-passed metering liquid as small as possible while maintaining adequate venting, there is valve chamber between the pressure valve and the pump chamber and separated from the latter by a return valve and a movable control wall, in which is incorporated the vent controlled by the control wall, opening on the suction stroke of the pumping component and closing on its delivery stroke. .There is also preferably in the valve chamber a prestressed displacement wall altering the volume of the valve chamber in the opposite direction to that of the control wall.
    Type: Grant
    Filed: August 7, 1995
    Date of Patent: December 31, 1996
    Assignee: Lang Apparatebau GmbH
    Inventors: Joachim Klein, Herbert Hunklinger
  • Patent number: 5572919
    Abstract: An apparatus controls a pressure in a cylinder chamber of a hydraulic pump-motor. The cylinder chamber is formed by fitting a piston in a cylinder bore of a rotatable cylinder block, and the cylinder block is rotated so that ports going to the cylinder chambers are alternatively opened to a high pressure port and a lower pressure port that are both formed in a valve plate. The apparatus includes a first switching port formed at a top dead point side of the valve plate, the first switching port being communicated with a tank through a first open-close valve. A second switching port is formed at a bottom dead point of the valve plate, the second switching port being communicated with the high pressure port through a second open-close valve.
    Type: Grant
    Filed: June 16, 1995
    Date of Patent: November 12, 1996
    Assignee: Kabushiki Kaisha Komatsu Seisakusho
    Inventor: Naoki Ishizaki
  • Patent number: 5564907
    Abstract: An evacuating apparatus includes a first pump section disposed on a suction opening side, a second pump section for exhausting a smaller amount of gas than the first pump section, the second pump being disposed in an exhaust opening side, a plurality of rotors accommodated in a housing, bearings for supporting rotation of the rotors, a suction opening for drawing fluid and a first exhaust opening thereof both formed on the housing, and a plurality of motors for driving the rotors. In the apparatus, the first pump section is a pump of positive displacement type formed by utilizing a volume change of a space defined by the rotors and the housing, and the second pump section is a viscous-type pump formed by utilizing a relatively moving surface formed in a small gap defined between the rotors and the housing.
    Type: Grant
    Filed: September 2, 1993
    Date of Patent: October 15, 1996
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Teruo Maruyama, Akira Takara, Yoshikazu Abe, Yoshihiro Ikemoto
  • Patent number: 5503537
    Abstract: The present invention relates to a gas compressor which prevents noise being produced in the suction conduit during idling. In conventional systems, the noise results from the collision of arriving and returning gas by means of a check valve provided between the suction chamber and the suction conduit. The present invention avoids this noise by providing an additional chamber which is connected via an admixture valve to the compression chamber (20) during the idling operation. This invention is especially applicable to pneumatic systems in automotive technology.
    Type: Grant
    Filed: June 21, 1994
    Date of Patent: April 2, 1996
    Assignee: WABCO Vermogensverwaltungs GmbH
    Inventors: Heinrich Schlossarczyk, Werner Heger
  • Patent number: 5378116
    Abstract: Inlet valves, in a fluid-pressuring cylinder, are biasingly held in given operative positions where they occlude passageways, formed in the cylinder, which open at opposite ends onto the cylinder interior and the cylinder exterior. When an incompressible slug of liquid enters the cylinder, the relevant valve retracts against the bias thereof to expose the passageway, whereby the risk of over-pressuring is avoided, and the excess pressure is simply vented through the passageway(s), directly to the exterior of the cylinder.
    Type: Grant
    Filed: April 29, 1994
    Date of Patent: January 3, 1995
    Assignee: Dresser-Rand Company
    Inventors: Robert A. Bennitt, Derek Woollatt
  • Patent number: 5293897
    Abstract: A pressure valve to be secured into a supply line between a pump work chamber of a fuel injection pump and a injection location of an internal combustion engine to be supplied with fuel. A pressure valve closing element provided with a sealing face is pressed by a compression spring onto a valve body provided with a valve seat. To reduce pressure waves in the supply line caused by a sudden closing of the pressure valve, a check valve that opens in the direction of the pump work chamber, and that comprises a valve seat, a valve closing element, a spring plate and a restoring spring is disposed in a through conduit of the pressure valve closing element, which is preceded by a throttle restriction. Throttling of the fuel flowing downstream of the check valve is avoided by disposing a through conduit in the spring plate. A filler piece inserted into the through conduit and defining the opening stroke of the check valve, also has a longitudinal bore that opens into a transverse bore for an unthrottled fuel flow.
    Type: Grant
    Filed: January 29, 1993
    Date of Patent: March 15, 1994
    Assignee: Robert Bosch GmbH
    Inventors: Johann Warga, Wolfgang Haydn, Uwe Kuhn
  • Patent number: 5203803
    Abstract: A reverse osmosis water purification system that incorporates a high torque low speed motor to drive a pump, such that the pump can continuously pump water from a source of water to an osmotic membrane. The system may have a reservoir to store the purified water as it is pumped through the osmotic filter. The system can also have a transformer and rectifier to convert and rectify an alternating electrical power source to 24 volt DC power for the motor. The transformer having a higher impedance than the motor such that the transformer acts as a current limiter in the event the motor stalls. The pump has an internal pressure relief valve operatively connected to the inlet of the pump housing. The relief valve opens when the output pressure of the diaphragm piston reaches a predetermined valve. The relief valve allows the high pressure water to flow back into the housing inlet creating a flow loop from the inlet back to the water source.
    Type: Grant
    Filed: September 5, 1991
    Date of Patent: April 20, 1993
    Assignee: Aquatec Water Systems, Inc.
    Inventor: Ivar Schoenmeyr
  • Patent number: 4926902
    Abstract: A pressure equalizer valve device incorporated in a fuel delivery valve assembly for use in a fuel injection pump, the fuel delivery valve assembly having a valve chamber and a delivery valve member axially movable in part within the valve chamber, the pressure equalizer valve device including a hollow equalizer valve casing member secured to the delivery valve member and having a valve seat surface portion, an equalizer valve element movable into and out of a position seated on the valve seat surface portion, a spring seat member engaging the equalizer valve element, and a helical compression spring seated at one end on the spring seat member and at the other within the delivery valve member, wherein the equalizer valve element, the spring seat member and the spring are all accommodated within the equalizer valve casing member.
    Type: Grant
    Filed: January 17, 1989
    Date of Patent: May 22, 1990
    Assignee: Diesel Kiki Co., Ltd.
    Inventors: Hisashi Nakamura, Satoshi Takahashi, Takayuki Ikeda, Masaaki Ogino
  • Patent number: 4869291
    Abstract: A compressor plate valve has a valve seat, a valve guard and at least one valve plate which is mobile to-and-fro therebetween to control passage channels provided in the valve seat. To enable the compressor to be switched to idle running, a lifting device is provided for keeping the valve open. This comprises a seating plate which is disposed mobile between the valve seat and the valve plate in the direction of the lifting movement and has valve ports aligned with the passage channels in the valve seat and connection apertures corresponding with the passage apertures in the valve plate. The lifting force is applied to the seating plate by means of a control device.
    Type: Grant
    Filed: October 26, 1988
    Date of Patent: September 26, 1989
    Assignee: Hoerbiger Ventilwerke Aktiengesellschaft
    Inventor: Hans Hrabal
  • Patent number: 4840548
    Abstract: A high pressure plunger pump comprises a centrally arranged pressure valve, an oscillatingly movable plunger, a sleeve guided on the plunger and limiting a working chamber, a suction pump which surrounds the sleeve and accommodates an aspirated fluid, the sleeve having a ring chamber which opens towards the plunger, and a bush which is arranged in the ring chamber and supported against the plunger, the bush abutting against the plunger.
    Type: Grant
    Filed: March 24, 1988
    Date of Patent: June 20, 1989
    Inventor: Paul Hammelmann
  • Patent number: 4840544
    Abstract: A hydraulic pump assembly for use in combination with an accumulator comprises a pump housing provided with an inlet port for connection to a fluid reservoir and an outlet port for connection to the accumulator, a single cam shaft rotatably mounted within the housing to be driven by an electric motor, a first plunger pump assembly of large displacement capacity including a first plunger axially slidably disposed within the housing perpendicularly to the cam shaft to be reciprocated by engagement with the cam shaft, and a second plunger pump assembly of small displacement capacity including a second plunger axially slidably disposed within the housing perpendicularly to the cam shaft to be reciprocated by engagement with the cam shaft and opposed to the first plunger. An exhaust check valve of the first plunger pump assembly is interconnected to a suction check valve of the second plunger pump assembly.
    Type: Grant
    Filed: July 5, 1988
    Date of Patent: June 20, 1989
    Assignees: Aisin Seiki Kabushiki Kaisha, Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiromu Kuromitsu, Nobuyasu Nakanishi, Akira Shirai, Noboru Noguchi
  • Patent number: 4834134
    Abstract: A two-way delivery valve structure of a fuel discharge valve in a fuel injection pump has a valve holder formed in an interior part thereof with an oil chamber communicating with a fuel injection pipe, a valve seat secured in the holder and formed in an interior part thereof with a fuel outlet conduit communicating with a pressure chamber, an discharge valve communicating with the pressure chamber and for engaging with and disengaging from an opening of the fuel outlet conduit so as to open and close the conduit, and a two-way delivery valve mounted to the fuel discharge valve and provided in an interior part thereof with a valve chest communicating with the fuel discharge valve, the two-way delivery valve being provided in the valve chest with a movable valve comprising a check valve for opening and closing a communicating portion communicating with the oil chamber, a valve casing constituting the two-way delivery valve being provided separately from the fuel discharge valve, the valve casing and fuel discha
    Type: Grant
    Filed: February 19, 1988
    Date of Patent: May 30, 1989
    Assignee: Diesel Kiki Co., Ltd.
    Inventors: Toshiaki Asami, Takayuki Ikeda, Toru Mogi, Tomie Kobayashi
  • Patent number: 4692102
    Abstract: A pressure valve is proposed herein which is built into the injection pump, its valve closing body being guided in a valve carrier, and arranged to open in the supply direction of the fuel, counter to the force of a restoring spring. A check valve is built into the pressure valve, its valve seat carrier being secured to the valve closing body and its movable valve closing member is arranged to open counter to the supply direction of the fuel via a spring supported on the base of the valve closing body. For axially securing the valve seat carrier on the valve closing body, the restoring spring simultaneously engages the valve seat carrier. As a result, the satisfactory functioning of the check valve is assured.
    Type: Grant
    Filed: July 15, 1982
    Date of Patent: September 8, 1987
    Assignee: Robert Bosch GmbH
    Inventors: Walter Hafele, Bernhard Schenk
  • Patent number: 4687421
    Abstract: A frangible pressure relief disc assembly is disclosed which is adapted to fit into a positive displacement pump on the suction side of each cylinder. The disc assembly provides a pressure relief when the fluid passing through the pump encounters a closed valve or other obstruction in the line. The disc assembly comprises: (a) a support member having a first side and a second side which is penetrated by a passage (e.g., a bore ) providing fluid communication from the first side to the second side, and (b) a pressure frangible disc fixedly attached to the support member and positioned to form a fluid-tight seal covering the passage.
    Type: Grant
    Filed: September 20, 1985
    Date of Patent: August 18, 1987
    Assignee: Dowell Schlumberger Incorporated
    Inventors: Donald C. Cameron, Paul M. Shireman
  • Patent number: 4651779
    Abstract: A constant-pressure delivery valve for fuel injection pumps for diesel engines includes a conical-surface obturator to which is fixed a body forming an axial chamber containing a calibrated one-way valve with a ball obturator. The ball obturator is located on that side of the chamber facing the conical-surface obturator and controls communication between radial and axial fuel return passages formed beneath the bottom of the chamber.
    Type: Grant
    Filed: July 10, 1986
    Date of Patent: March 24, 1987
    Assignee: Weber S.p.A. Azienda Altecna
    Inventors: Renato Filippi, Angelo Beatrice
  • Patent number: 4648369
    Abstract: A pressure valve is proposed which is installed in the supply line which leads from a fuel injection pump to a fuel injection valve. The pressure valve has a return-feed collar provided with a throttle connection and a relief conduit is provided parallel to the return-feed collar and to the valve closing member sealing face. Via a check valve and a throttle, the relief conduit establishes the communication between the supply line toward the injection pump and the supply line toward the injection valve. By means of the combination of the return-feed collar having a throttle with a check valve acting as a pressure maintenance valve, a desired residual pressure can be established in an adapted manner in the supply line toward the injection valve, and the injection duration in particular can be adapted to the requirements of a fuel injection pump which pumps at a reduced feed rate during idling operation.
    Type: Grant
    Filed: April 8, 1985
    Date of Patent: March 10, 1987
    Assignee: Robert Bosch GmbH
    Inventor: Peter Wannenwetsch
  • Patent number: 4519750
    Abstract: A variable-delivery refrigerant compressor wherein the delivery of a compressed refrigerant is adjustable by an actuator which is movable with a discharge pressure of the compressor between a first position at which plural discharge valves corresponding to compression chambers are rendered operative, and a second position at which at least one of the discharge valves is rendered inoperative. A pilot switch valve is disposed in a passage through which the discharge pressure is applied to the actuator. The switch valve controls a supply of refrigerant of the discharge pressure to the actuator such that the actuator is placed in the first position while a suction pressure of the compressor is relatively high, and in the second position while the suction pressure is relatively low.
    Type: Grant
    Filed: November 29, 1983
    Date of Patent: May 28, 1985
    Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventors: Masayuki Kurahashi, Hisao Kobayashi, Hiroyuki Deguchi
  • Patent number: 4507059
    Abstract: A variable delivery compressor having therein a plurality of compression chambers is adapted for compressing a refrigerant gas of a cooling circuit. The compressor has a first delivery chamber communicating with the compression chambers by way of a fixedly arranged valve and a second delivery chamber communicating with the compression chambers by way of a movably arranged delivery valve. This movable valve is formed to include a base portion, a plurality of reed portions formed to radially extend from the outer circumference of the base portion and arranged to face delivery ports, and at least one protrusion formed to radially extend from the outer circumference of the base portion for suppressing the warp of the base portion.
    Type: Grant
    Filed: January 27, 1984
    Date of Patent: March 26, 1985
    Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisa-Kusho
    Inventors: Hisao Kobayashi, Makoto Ohno, Shinichi Suzuki
  • Patent number: 4507054
    Abstract: A liquid dispensing system comprising a collapsible container, a dispensing head, a conduit leading from the container to the dispensing head and a pump for pumping liquid from the container through the conduit to the dispensing head. A vacuum switch is responsive to a sharp increase in the vacuum on the intake side of the pump to shut the pump off. The pump is controlled by a pressure switch which is responsive to the pressure of the liquid pumped by the pump. A bypass is provided for bypassing liquid in response to a predetermined pressure in the pumping chamber.
    Type: Grant
    Filed: June 28, 1982
    Date of Patent: March 26, 1985
    Assignee: Carr-Griff, Inc.
    Inventor: Ivar L. Schoenmeyr
  • Patent number: 4478558
    Abstract: A liquid pump is provided and particularly a downhole pump for use in an oil well bore for pumping oil or in a gas well to remove condensate. The downhole pump includes a plurality of pump and transfer modules, each of which includes an elongate housing with end couplings and with two internal passages extending therethrough. The pump module further has a bladder extending between the end couplings around the internal passages with the couplings having passages connecting one of the internal passages to space on one side of the bladder. When fluid, preferably gas, under pressure is supplied to that passage, the bladder forces liquid therein upwardly into the next module. At the same time, fluid under pressure is exhausted through one of the passages from the space on the opposite side of the bladder of the next pump module, aiding it to receive liquid from the pump module therebelow.
    Type: Grant
    Filed: June 25, 1982
    Date of Patent: October 23, 1984
    Assignee: D. W. Zimmerman Mfg., Inc.
    Inventor: Douglas B. Owen
  • Patent number: 4467767
    Abstract: A fuel injection pump for internal combustion engines having an equal-pressure relief valve, which has a structure requiring little space when installed and is provided with a fastener element. The equal-pressure relief valve comprises a pressure valve body, onto which a beaker-shaped filler piece protruding into the interior of the pressure valve spring is placed. The structural unit comprising the pressure valve body and the filler piece containing the relief valve is held together, even when the pipe connector fitting or the pressure valve spring is removed, by means of the transit fastener element provided with a fastener ring. The invention is applicable both to single and series fuel injection pumps as well as to distributor injection pumps, particularly when space for installation is restricted.
    Type: Grant
    Filed: March 18, 1982
    Date of Patent: August 28, 1984
    Assignee: Robert Bosch GmbH
    Inventors: Gunter Kampichler, Heinz Kuschmierz, Bernhard Schenk
  • Patent number: 4459086
    Abstract: The support of a relief valve in a constant pressure relief valve of the fuel injection pump comprises a bolt and two openings for receiving it in the sheath-like wall of the movable valve closing body. The openings are embodied by a bore drilled through the wall of the valve closing body at right angles to the longitudinal axis of the valve closing body. The bolt receives a spring plate of a spring of the relief valve in a depression and is thereby positioned and secured.
    Type: Grant
    Filed: August 25, 1982
    Date of Patent: July 10, 1984
    Assignee: Robert Bosch GmbH
    Inventors: Walter Hafele, Bernhard Schenk
  • Patent number: 4427347
    Abstract: A fuel injection pump for internal combustion engines with the injection pump including a dual-acting check valve arranged between the pump cylinder and a valve holder of the injection pump. The check valve is constituted by a resilient valve disk which includes a central passage. A base plate, provided with inlet bores and a central throttle acting in a direction opposite a fuel conveying direction of the injection pump, is arranged between the pump cylinder and the valve holder. The base plate forms an abutment for the valve disk when the check valve opens in a direction opposite the fuel conveying direction of the injection pump.
    Type: Grant
    Filed: December 8, 1980
    Date of Patent: January 24, 1984
    Assignee: Daimler-Benz A.G.
    Inventor: Ulrich Augustin
  • Patent number: 4413955
    Abstract: A swash plate compressor especially suited for automotive vehicles. The inner housing may be moved in the rear housing in the front and rear direction, as the occasion may demand, for adjusting the compression capacity or performance of the compressor. A partition wall is projectingly projected at the front side of the inner housing for defining an inner or discharge chamber and an outer or suction chamber. A plurality of clamp bolts for fixedly clamping together a rear cylinder block and the rear housing are passed through said suction chamber. The rear wall of the inner housing is formed with an annular thin-walled portion lesser in thickness than the valve plate on the front surface of said inner housing. By the function of said thin-walled portion, the inner housing may be flexed readily to absorb valve plate strain.
    Type: Grant
    Filed: March 19, 1982
    Date of Patent: November 8, 1983
    Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventors: Kimio Kato, Hisao Kobayashi, Takamitsu Mukai, Hiroya Kono, Taku Yamamoto
  • Patent number: 4407640
    Abstract: A reciprocating pump, in which a pressure control valve has a pressure-receiving face and is supported to a valve seat bearing at least one of suction and discharge valves, the pressure-receiving face being disposed within a discharge passage, and at a cylinder head is provided a pressure adjuster for a control spring biasing the pressure control valve to the valve seat, so that the pressure control valve, which functions as a relief valve, safety valve or unloader valve, may be incorporated with a main body of the pump so as to simplify construction and decrease the number of parts, thereby making the pump less expensive to produce, smaller in size, and lighter in weight.
    Type: Grant
    Filed: May 18, 1981
    Date of Patent: October 4, 1983
    Assignee: Arimitsu Industry Co., Ltd.
    Inventor: Yoriaki Namekata
  • Patent number: 4403921
    Abstract: A multi-cylinder variable delivery compressor containing a plurality of compression chambers is adapted for use in compressing a refrigerant gas of a cooling circuit. The compressor has a first delivery chamber communicating with the compression chambers by way of a fixedly arranged delivery valve means and a second delivery chamber communicating with the compression chambers by way of a movably arranged delivery valve means.The movable delivery valve means is urged from its closing position toward its opening position, and is moved back to its closing position when a delivery pressure from the cooling circuit is applied to the movable delivery valve means.
    Type: Grant
    Filed: October 21, 1981
    Date of Patent: September 13, 1983
    Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventors: Kimio Kato, Hiroya Kono, Hisao Kobayashi
  • 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: 4168940
    Abstract: A fuel injection pump for delivery of fuel under high pressure to combustion chambers and in which the fuel is delivered by a rotating and reciprocating pump piston. The relative angular position of the pump piston with respect to its drive shaft defines the timing of fuel injection. This timing is varied in accordance with engine speed by a hydraulic servo-mechanism which includes a piston moving against two springs, one of which comes into engagement before the other so that the change of injection timing as a function of engine speed follows two different curves.
    Type: Grant
    Filed: October 5, 1977
    Date of Patent: September 25, 1979
    Assignee: Robert Bosch GmbH
    Inventor: Karl Konrath
  • Patent number: 4120614
    Abstract: A hand bicycle pump of generally cylindrical configuration essentially comprising a pump body adapted to be reciprocated on a pump rod. An air circulation chamber communicates at one end through the compression piston with the compression chamber in the pump body and at the other end via a check valve with a connector adapted to couple temporarily the pump to an inflation valve of an inflatable body, e.g. a tire. The desired inflation pressure is preselected by rotating a sleeve, accessible from outside the pump, having an index, relative graduations along a slot in the pump body. The sleeve varies the spring force exerted against one end of a piston control member, the other end of which is subjected to the pressure inside the inflatable body so that once the desired pressure is reach the control member is displaced axially to bring the compression chamber into communication with the atmosphere.
    Type: Grant
    Filed: July 27, 1977
    Date of Patent: October 17, 1978
    Assignee: Etablissements Poutrait-Morin S.A.
    Inventor: Paul C. Bouder
  • Patent number: 3986795
    Abstract: There is disclosed a fuel injector assembly having a disc type delivery valve and a reverse check combined with the delivery valve to control secondary pressure to reduce fuel line erosion due to cavitation. The arrangement provides an unobstructed passageway for fuel delivery upon opening of the valve.
    Type: Grant
    Filed: June 11, 1975
    Date of Patent: October 19, 1976
    Assignee: Caterpillar Tractor Co.
    Inventors: Stanley J. Kranc, Ziedonis I. Krauja, Joseph P. Little, Jr.
  • Patent number: 3981447
    Abstract: Apparatus for spraying mould parting agents and other substances having a conduit for circulating the substance, and spray nozzle equipment having a first bore connected to the conduit for a circulation of the substance therethrough. A second bore in the equipment intersects the first bore at an angle and extends to a spraying device. A nozzle pin in the second bore has a third bore for supplying a pressurized medium to the spraying device and is adjustable for a regulation of the supply of circulated substance to the spraying device. Additionally or alternatively, part of a conduit for circulating a sprayable substance is connected to a pump submerged in a supply of that substance and is actuated for actuating the submerged pump.
    Type: Grant
    Filed: February 10, 1975
    Date of Patent: September 21, 1976
    Assignee: Siemens-Albis Aktiengesellschaft
    Inventors: Bruno Bachofen, Karl Riedl