Pumping Member Position Controlled Port Patents (Class 417/490)
  • Patent number: 11225224
    Abstract: Structural simplification and efficient injection state of high-pressure air from a nozzle are ensured. A foreign material removal device is provided with: a cylinder (18) into which air is caused to flow; a piston (22) which is movably supported in the cylinder and feeds the air introduced into the cylinder in a feeding direction as high-pressure air; and a nozzle (6) which injects the high-pressure air fed by the piston. Thus, the piston is moved relative to the cylinder, the high-pressure air is fed from the cylinder, and the high-pressure air is injected from the nozzle, whereby structural simplification and an efficient injection state of the high-pressure air from the nozzle can be ensured.
    Type: Grant
    Filed: August 13, 2019
    Date of Patent: January 18, 2022
    Assignee: KOITO MANUFACTURING CO., LTD.
    Inventors: Akinobu Kubota, Yasuhiro Ichikawa
  • Patent number: 10975816
    Abstract: In a high pressure fuel supply system, a variable speed motor asynchronously actuates a pumping piston with a drive mechanism including a circular cam with cam roller, having an axis that is offset from the axis of the cam drive shaft. A rolling or sliding cam follower is rigidly connected to the piston, and a piston retainer is operatively connected among the piston, the cam follower and the cam roller. As the cam shaft rotates, the cam roller rotates eccentrically relative to the cam shaft while maintaining contact with the cam follower, thereby reciprocating the follower and the piston along the actuation axis, in corresponding charging and pumping strokes of the piston.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: April 13, 2021
    Assignee: Stanadyne LLC
    Inventor: Richard Paulo Pellini
  • Patent number: 10584700
    Abstract: A high-pressure fuel pump (10) includes a plunger (11), a pump housing (12), an intake valve (13), a discharge passage (14), a fuel seal member (18), and a fuel inlet conduit (34). The pump housing (12) includes a fuel pressurizing chamber (23), an intake passage (24a), a discharge passage (24b), a cylinder housing member (21), a cover member (31) that covers the cylinder housing member (21), and an intake gallery chamber (12g). The fuel inlet conduit (34) is connected to the cover member (31) and configured to introduce fuel into the intake gallery chamber (12g) from outside the cover member (31). The pump housing (12) includes a return passage (33e) that communicates the intake gallery chamber (12g) with a space surrounded by the plunger (11), the cylinder housing member (21), and the fuel seal member (18). A first end portion of the return passage (33e) on the intake gallery chamber (12g) side is positioned on an opposite side of the cylinder housing member (21) from the fuel inlet conduit (34).
    Type: Grant
    Filed: June 5, 2014
    Date of Patent: March 10, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takeyuki Yabuuchi, Hirokazu Yokoyama
  • Patent number: 10544770
    Abstract: The subject matter of this specification can be embodied in, among other things, a fluid control device that includes a housing defining a plunger cavity in fluid communication with a fluid inlet and a fluid outlet, a valve having a shaft having a first end and a second end, and a stopper at the first end configured to block a fluid circuit between the fluid inlet and the fluid outlet in a first configuration of the inlet control valve and connect the fluid circuit in a second configuration of the inlet control valve, and a plunger configured for axial movement within the plunger cavity, defining a shaft cavity having an inner wall extending from an enclosed end to an open end in fluid communication with the fluid outlet, and configured to accommodate axial movement of the shaft within the shaft cavity.
    Type: Grant
    Filed: June 22, 2018
    Date of Patent: January 28, 2020
    Assignee: Woodward, Inc.
    Inventors: Vlade Vukadinovic, Lars Huebner
  • Patent number: 10227976
    Abstract: A pump body includes a pump inserted portion inserted in a pump mount hole. A cylinder has a compression chamber at one end side and opens in an end surface of the pump inserted portion at the other end side. A plunger is actuated by a cam and is movable in the cylinder. A seal member restricts fuel in the compression chamber to leak through a slidable gap between the plunger and the cylinder and restricts lubricating oil flowing through the slidable gap into the compression chamber. A retaining member retains the seal member at a predetermined position in the axial direction and restricts the plunger from falling out of the cylinder. The retaining member is press-fitted to an end of the pump inserted portion.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: March 12, 2019
    Assignee: DENSO CORPORATION
    Inventor: Hiroki Inatani
  • Patent number: 9816473
    Abstract: An injection system for an internal combustion engine may include a high-pressure pump for delivering fuel at high pressure into a high-pressure region, wherein the high-pressure pump includes an inlet valve and an electrically switched, digitally actuated outlet valve. The outlet valve is designed as a normally-open outlet valve. In this way, it is possible to dispense with a pressure relief valve for the high-pressure region.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: November 14, 2017
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventors: Thomas Kraft, Tobias Ritsch, Christoph Klesse
  • Patent number: 9791064
    Abstract: A quantity control valve comprises a valve needle configured to move in an axial direction, a damping chamber having a wall, and a valve element delimiting the damping chamber. The valve needle is configured to move the valve element in an opening direction. A gap is defined between the wall of the damping chamber and the valve element. The gap has at least one recess and connects the damping chamber to a flow duct.
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: October 17, 2017
    Assignee: Robert Bosch GmbH
    Inventors: Rainer Wilms, Matthias Maess, Dominik Brunner
  • Patent number: 9506602
    Abstract: A lubricator pump adjuster for use with a lubricator pump having a piston housed in a pump body and a rocker connected to the piston. The lubricator pump adjuster comprises a mounting fitting attachable to the pump body and a housing disposed on the mounting fitting. An actuator is disposed in the housing and connectable to the rocker, whereby activation of the actuator causes the rocker to move, thereby adjusting the stroke of the piston. The actuator is a rotary actuator with an output shaft. The lubricator pump adjuster includes a cam faced member attached to the output shaft, and a plunger in contact with the cam faced member that is connectable to the rocker. The cam faced member may include a spiral-ramped surface.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: November 29, 2016
    Assignee: COMPRESSOR PRODUCTS INTERNATIONAL LLC
    Inventor: Lee Alexander
  • Patent number: 9188096
    Abstract: A fuel pump which can suppress fuel bubbles from being sucked into a fuel pressure chamber, and can achieve a stable fuel pressure property. The fuel pump has a pump body formed with a suction passage and a pump operation chamber, and a pressure pump mechanism to pressurize and discharge fuel. The pump body has a lower side wall portion and an upper side wall portion respectively at the vertically lower and upper sides of the inner wall portion forming a suction gallery chamber partly forming the suction passage. The pressure pump mechanism has a valve retaining member having an insertion portion inserted into the suction gallery chamber. The insertion portion has internal suction inlets through which the fuel is sucked from the suction gallery chamber into the pump operation chamber, the internal suction inlets being positioned in the intermediate height area in the suction gallery chamber.
    Type: Grant
    Filed: September 6, 2011
    Date of Patent: November 17, 2015
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takashi Usui, Tomoyuki Maeda, Kazuhiro Asayama
  • Publication number: 20150071802
    Abstract: A device for dosing a fill product into a container is described. The device includes a dosing unit with a dosing cylinder, a dosing piston displaceably disposed in the dosing cylinder between an upper center and a lower center of the dosing cylinder, and an intake valve with a valve seat for sucking the fill product from a rotatable product reservoir. The valve seat is disposed above a level formed by a base of the dosing piston at the lower center.
    Type: Application
    Filed: September 10, 2014
    Publication date: March 12, 2015
    Inventors: Christian Goldbrunner, Florian Engelsberger, Manfred Faltermeier, Stefan Koller, Thomas Schuhbeck
  • Publication number: 20130336806
    Abstract: A rotating radial tube pump has a rotary portion and an extended inlet integral therewith, both of which rotate about a longitudinal axis through the extended inlet. The rotary portion has a traverse passageway with outlet openings at each end and an inlet opening into the transverse passageway. The extended inlet has a passageway traversing between an extended inlet opening and an extended outlet opening at each end of the passageway. The extended outlet opening communicates with the inlet opening of the passageway through the rotary portion. As the extended inlet and the rotary portion are rotated about a longitudinal axis through the extended inlet, the fluid flows into an inlet opening of the passageway traversing the extended inlet and then into the passageway traversing the rotary portion and then is expelled radially outward from outlet openings at each end of the passageway traversing the rotary portion.
    Type: Application
    Filed: June 18, 2012
    Publication date: December 19, 2013
    Inventors: Lonnie Reid, Daniel L. Tweedt
  • Patent number: 8591207
    Abstract: A pump for use in an inverted dispenser is disclosed herein. In one embodiment, the liquid pump includes a fluid chamber that has a top portion when in the inverted position and at least one side wall located below the top portion. A liquid intake port extends through the at least one side wall and allows fluid to flow into the fluid chamber. The pump also includes a check valve to prevent fluid from flowing out of the fluid chamber through the fluid intake port that is located in the at least one side wall. Actuation of the liquid pump in a first direction causes fluid to enter the fluid chamber through the fluid intake port and actuation of the liquid pump in a second direction causes liquid to exit the fluid chamber trough the fluid chamber outlet and out of a dispensing outlet. In one embodiment, the check valve is an elastomeric valve.
    Type: Grant
    Filed: December 2, 2010
    Date of Patent: November 26, 2013
    Assignee: GOJO Industries, Inc.
    Inventor: Nick Ciavarella
  • Publication number: 20130189139
    Abstract: A system, in certain embodiments, includes a compression cylinder configured to mount to a reciprocating compressor. The compression cylinder includes an intake port and a discharge port. The system also includes a piston assembly disposed within the compression cylinder. The piston assembly includes a piston configured to selectively block the intake port upon movement of the piston assembly relative to the compression cylinder.
    Type: Application
    Filed: January 19, 2012
    Publication date: July 25, 2013
    Applicant: CAMERON INTERNATIONAL CORPORATION
    Inventors: Karthik Ramakumar, Omar M. Kabir, Ken Ashraph
  • Publication number: 20130121848
    Abstract: A vibratory cavitation pump is provided that includes a working cylinder having an fluid inlet and a fluid outlet, a rod extending into the cylinder, a piston fixed to the rod, a plate fixed to the rod and spaced from the piston, an activator slidably mounted to the rod between the piston and the plate and an oscillating pumping mechanism operably connected to the rod to move the rod with respect to the working cylinder. The sliding activator creates cavitation in the fluid being pumped to increase the ease of pumping the fluid, such as high viscosity fluids. The pump can also include an external cylinder disposed around the working cylinder to impart rotational motion to the incoming fluid, thereby enhancing the cavitation created in the fluid by the pump, rendering the fluid easy to displace.
    Type: Application
    Filed: December 20, 2012
    Publication date: May 16, 2013
    Inventors: Grigori Lishanski, Oleg Lishanski
  • Publication number: 20130022484
    Abstract: A high-pressure pump (1), which serves in particular as a radial or inline piston pump for fuel injection systems of air-compressing, auto-ignition internal combustion engines, comprises a cylinder head (2) and a pump assembly (6). Here, the cylinder head (2) has a cylinder bore (4) in which a pump piston (5) of the pump assembly (6) is guided. Here, the pump piston (5) delimits, in the cylinder bore (4), a pump working chamber (12). Also provided is an inlet valve (20) which is integrated into the cylinder head (2) and via which fuel can be conducted into the pump working chamber (12). Metering of the fuel conducted into the pump working chamber (12) can be achieved by actuation of the inlet valve (20). Here, full charging of the pump working chamber (12) may take place. It is however also possible for partial charging of the pump working chamber (12) to be achieved by means of suitable actuation of the inlet valve (20).
    Type: Application
    Filed: March 2, 2011
    Publication date: January 24, 2013
    Applicant: ROBERT BOSCH GMBH
    Inventors: Walter Fuchs, Nestor Rodriguez-Amaya, Peter Boehland, Uwe Iben, Andreas Illmann
  • Patent number: 8333567
    Abstract: A viscous fluid pump is provided. The pump has a housing that has an inlet for receiving viscous fluid and an outlet for dispensing viscous fluid. A bushing within the housing has an opening proximate the inlet and which provides access into an inner chamber of the bushing. The opening extends beyond the inlet in a direction orthogonal to the longitudinal dimension of the pump. A piston is movable within the inner chamber, with the piston having a first position in which the inlet is in fluid communication with the inner chamber through the opening and a second position in which the inlet is not in fluid communication with the inner chamber. The housing may define an interior, with the interior of the housing being free of soft seals.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: December 18, 2012
    Assignee: Ampro Manufacturing, Inc.
    Inventors: William C. Watts, Ronald C. Bricker
  • Publication number: 20120308419
    Abstract: An improvement to raise the efficiency of a reciprocating refrigeration compressor, the improvement comprising a channel in the piston that transfers pressure from the clearance volume of the cylinder to the low pressure side of the piston when an opening of the channel aligns with a groove or a duct in the cylinder wall. The channel comprises a ball extending from and held to the clearance volume opening of the channel by a spring. When the spring is compressed, the ball is moved from the opening, and pressure in the clearance volume is transferred to the low pressure side of the piston.
    Type: Application
    Filed: August 10, 2012
    Publication date: December 6, 2012
    Inventor: Xiaohua YUAN
  • Publication number: 20120301339
    Abstract: Disclosed is a pump with a shell, an air-pumping device, a cover and a leak-preventing device. The air-pumping device is used to pump air out of the shell and therefore pump liquid into the shell. The cover includes an opening and channel defined therein. The shell is in communication with the exterior via the opening and in communication with the cylinder via the channel as the cover is attached to the shell and the cylinder. The leak-preventing device is connected to the cover. The channel is normally released from the leak-preventing device as the pump is located in an upright position. The channel is blocked by the leak-preventing device as the pump is located in an inverted position.
    Type: Application
    Filed: May 25, 2011
    Publication date: November 29, 2012
    Inventor: Tien-Tsai Tseng
  • Patent number: 8241019
    Abstract: A pump element includes a pump element housing defining a pump chamber having an inlet and an outlet, and at least a first movable element movable in the pump chamber between a first and a second position. During a movement of the first movable element in the direction from the first to the second position, a flow resistance of a flow path from the first movable element through the inlet is larger than a flow resistance of a flow path between the pump element housing and the first movable element. During a movement of the first movable element in the direction from the second position to the first position, a flow resistance of a flow path from the first movable element through the outlet is smaller than a flow resistance of the flow path between the pump element housing and the first movable element. Thus, during a reciprocating movement of the first movable element between the first and the second position, a net flow through the outlet takes place.
    Type: Grant
    Filed: March 27, 2007
    Date of Patent: August 14, 2012
    Assignee: Hahn-Schickard-Gesellschaft Fuer Angewandte Forschung e.V.
    Inventors: Heinz Kueck, Daniel Benz, Frank Wolter
  • Patent number: 8235689
    Abstract: A reciprocating piston liquid pump and piston driver mechanism includes a reciprocating piston liquid pump having a piston chamber and a piston reciprocating in the piston chamber from an unactuated position to an actuated position, with movement of the piston from the unactuated position to the actuated position causing the advancement of product. The piston driver mechanism includes a first driver member having an axis and a sloped circumferential surface extending along its axis, and a second driver member having an axis and a sloped circumferential surface extending along its axis. The first and second driver members are aligned along their axes and mate at an unactuated position along at least a portion of their sloped circumferential surfaces. Rotation of one of the driver members about its axis relative to the other of the driver members causes the second driver member to advance away from the first driver member toward an actuated position.
    Type: Grant
    Filed: November 3, 2008
    Date of Patent: August 7, 2012
    Assignee: GOJO Industries, Inc.
    Inventors: Nick E. Ciavarella, David D. Hayes
  • Publication number: 20120141309
    Abstract: A pump for use in an inverted dispenser is disclosed herein. In one embodiment, the liquid pump includes a fluid chamber that has a top portion when in the inverted position and at least one side wall located below the top portion. A liquid intake port extends through the at least one side wall and allows fluid to flow into the fluid chamber. The pump also includes a check valve to prevent fluid from flowing out of the fluid chamber through the fluid intake port that is located in the at least one side wall. Actuation of the liquid pump in a first direction causes fluid to enter the fluid chamber through the fluid intake port and actuation of the liquid pump in a second direction causes liquid to exit the fluid chamber trough the fluid chamber outlet and out of a dispensing outlet. In one embodiment, the check valve is an elastomeric valve.
    Type: Application
    Filed: December 2, 2010
    Publication date: June 7, 2012
    Applicant: GOJO INDUSTRIES, INC.
    Inventor: Nick Ciavarella
  • Publication number: 20120101451
    Abstract: A manually actuated pump, such as a bolus delivery circuit of an insulin pump, combines a direct drive piston system with a lost motion valve system, to deliver reliably a full bolus dose, while precluding partial dosing or inadvertent overdosing conditions. The pump may also include a signaling device to indicate when a full bolus dose is delivered.
    Type: Application
    Filed: October 22, 2010
    Publication date: April 26, 2012
    Inventors: Christopher S. Boit, Peter Gravesen, Heiko Arndt, Gregory H. Peatfield, Patrick F. McDermott
  • Patent number: 8157548
    Abstract: The present invention relates to a delivery pump, in particular for delivering diesel fuel into a high-pressure accumulator. The pump has a housing and a drive shaft which is accommodated in the latter and is mounted by at least one sliding bearing arrangement such that it can rotate about a drive shaft axis. The sliding bearing arrangement is formed by a bearing bore and a bearing shaft section which extends through the latter. The sliding bearing arrangement has a bearing play which extends in the radial direction between the bearing shaft section and the bearing bore and has a smaller value in the bearing center than at least one bearing edge. A delivery pump for delivering diesel fuel is therefore provided which has a low-wear sliding bearing arrangement.
    Type: Grant
    Filed: September 17, 2007
    Date of Patent: April 17, 2012
    Assignee: Robert Bosch GmbH
    Inventors: Gerhard Meier, Johannes Muellers
  • Patent number: 8096789
    Abstract: A device for difficult intervention in a closed enclosure, having an enclosure connected to the closed enclosure via a duct, a piston that can be moved by a motor, a geometry allowing a contact with the outside air when the piston occupies a certain position within the enclosure in order to generate a sudden release of pressure, and an outlet valve remaining closed when the piston increases the volume of the enclosure so as to cause the pressure reduction within the enclosures.
    Type: Grant
    Filed: June 9, 2005
    Date of Patent: January 17, 2012
    Inventor: David Weill
  • Publication number: 20120009073
    Abstract: A pump includes a cylindrical main body comprising a central channel, four valve assemblies each threadedly fastened in a radial hole, first and second cavities disposed to each hole and communicating therewith, a spring activated first check valve in each first cavity, a spring activated second check valve in each second cavity, an outlet, a threaded outlet orifice communicating with the outlet, an inlet, a threaded inlet orifice communicating with the inlet, four plungers each in a plunger chamber communicating between the hole and the channel, opposite outlet and inlet tunnels, two snapping members each having a central hole and a snapping bifurcation at either bent end, the snapping bifurcation slidably put on an end of the plunger; a top cover; a bottom cover; and an eccentric shaft having one end secured to motor shaft and other portions in the main body to operatively secure to the snapping members.
    Type: Application
    Filed: July 6, 2010
    Publication date: January 12, 2012
    Inventor: Huang Chin Hsieh
  • Patent number: 7905853
    Abstract: A dialysis machine valve manifold assembly includes a plurality of pneumatic valves; a plate including a first side and a second side, the plurality of pneumatic valves mounted to the first side of the plate, the second side of the plate defining a plurality of pneumatic flow paths; and a port header mounted removably to the plate, the port header including a plurality of ports configured to connect sealingly to pneumatic tubing, the ports in fluid communication with the pneumatic valves via the pneumatic flow paths defined in the plate.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: March 15, 2011
    Assignees: Baxter International Inc., Baxter Healthcare S.A.
    Inventors: Paul Chapman, Robert W. Childers, Gideon Hecht, Anders Wellings
  • Publication number: 20100303655
    Abstract: A reciprocating pump including a sleeve comprising a first flow path element and a plunger receivable in the sleeve is provided. The plunger includes a fluid contact face and second flow path element in fluid communication with the fluid contact face. The sleeve and the fluid contact face define a compression chamber comprising an inlet and an outlet. The sleeve and the plunger are moveable relative to one another for adjusting overlap between the first flow path element and the second flow path element for diverting flow of fluid from the compression chamber and out of the second flow path element during a discharge stroke to control flow of fluid pumped out of the outlet.
    Type: Application
    Filed: January 11, 2010
    Publication date: December 2, 2010
    Inventor: Vladimir SCEKIC
  • Patent number: 7841920
    Abstract: Toy dolls including a body and a fluid-transport mechanism supported by the body and configured to receive a liquid from a liquid delivery device and dispense the liquid from the toy doll. In some embodiments, the fluid-transport mechanism includes a reservoir for collecting the liquid, a plunger disposed within the reservoir, and an activation mechanism configured to move the plunger from a fluid-delivery position to a fluid-receipt position when the liquid delivery device is inserted into the input region.
    Type: Grant
    Filed: June 7, 2007
    Date of Patent: November 30, 2010
    Assignee: Mattel, Inc,
    Inventor: Tim Rettberg
  • Publication number: 20100209265
    Abstract: Power and control logic configurations for gas well dewatering systems are provided. In one example, a reservoir is configured to contain hydraulic, lubricating fluid. An electric motor is configured to receive fluid from the reservoir for lubrication and a hydraulic pump powered by the electric motor is configured to receive fluid from the reservoir and pump the fluid into a hydraulic circuit. A positive displacement oscillating pump is powered by the hydraulic pump and configured to pump fluid from the reservoir to an outlet from the well. The electric motor and hydraulic pump receive the same fluid from the reservoir for lubrication and to create pressure in the hydraulic circuit, respectively.
    Type: Application
    Filed: February 18, 2009
    Publication date: August 19, 2010
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Michael A. Dowling, Jason Kamphaus, Harryson Sukianto, Alain P. Dorel, John David Rowatt, Arthur I. Watson
  • Patent number: 7661936
    Abstract: The invention relates to a piston pump for delivering hydraulic fluid, including a cylinder element, a piston that is able to move back and forth in the cylinder element, a piston chamber in which the piston is able to exert pressure on the hydraulic fluid, an outlet valve, and a slot-controlled inlet valve; the inlet valve has at least one slot that is oriented in the movement direction (X-X) of the piston.
    Type: Grant
    Filed: June 15, 2005
    Date of Patent: February 16, 2010
    Assignee: Robert Bosch GmbH
    Inventor: Juergen Reiner
  • Patent number: 7621726
    Abstract: A metering pump, especially for feeding fuel to a vehicle heater, comprising a delivery plunger (50), which can be moved to and fro for delivering liquid medium, a guide sleeve (42), which partially accommodates the delivery plunger (50) and guides same for the reciprocating movement, wherein the guide sleeve (42) with an inner surface (46) thereof defines a pump ejection chamber (48) and it defines with an outer surface (60) thereof a channel arrangement (74) leading to the pump ejection chamber (48), wherein the guide sleeve (42) is carried in a carrier element (24) and is in contact with the carrier element (24) by its outer surface (60) essentially over the entire circumference in a first length area (58) and is located with its outer surface at a spaced location from the carrier element (24) in a second length area (64), wherein the channel arrangement (74) is provided between the carrier element (24) and the guide sleeve (42) in its second length area (64), is characterized in that in its second length
    Type: Grant
    Filed: January 13, 2005
    Date of Patent: November 24, 2009
    Assignee: J. Eberspächer GmbH & Co. KG
    Inventors: Stefan Bächner, Oliver Brodbeck
  • Publication number: 20090178649
    Abstract: A fuel injection pump for a piston engine, the pump comprising a cylinder element having a pressure plenum provided with an outlet chamber for removing pressurized fuel from the pressure plenum, a piston arranged to reciprocate inside the pressure plenum, an inlet chamber arranged outside the pressure plenum and at least one inlet channel arranged between the pressure plenum and the inlet chamber. At least one fill channel provided with a non-return valve is arranged between the pressure plenum and the inlet chamber, the valve allowing fuel flow from the inlet chamber to the pressure plenum but preventing flow from the pressure plenum to the inlet chamber.
    Type: Application
    Filed: November 1, 2006
    Publication date: July 16, 2009
    Applicant: Wärtsilä Finland OY
    Inventors: Matti Koivunen, Matts Friis, Thomas Hägglund
  • Patent number: 7544051
    Abstract: A pressurisation pump is provided comprising a first plunger and a second plunger, each plunger being reciprocable within a respective plunger bore defined by a housing, wherein the first and second plungers together with the bores define, at least in part, a pumping volume. The pump also includes an inlet port and an outlet port. An end of the first plunger is arranged to cover the inlet port during a pump delivery stage in which fluid is displaced from the pumping volume and an end of the second plunger is arranged to cover the outlet port during a pump fill stage in which fuel is drawn into the pumping volume. The end of the first plunger and the end of the second plunger are arranged to cover the inlet port and the outlet port respectively during a pump transfer stage during which the pumping volume is maintained.
    Type: Grant
    Filed: February 17, 2004
    Date of Patent: June 9, 2009
    Assignee: Delphi Technologies, Inc.
    Inventor: Geoffrey David Bootle
  • Publication number: 20080317617
    Abstract: A pump for fluid, comprising a pump body defining a bore, a pumping plunger having an end region which is slidably received within the bore, a spill port defined by the pump body in a wall of the bore which port is coverable by the end region of the pumping plunger as the plunger is driven on a pumping stroke, in use, so as to initiate fluid pressurization within a pumping chamber; and a spill feature defined by the pumping plunger being arranged to uncover the spill port during a pumping stroke so as to cause depressurization of the pumping chamber. The pumping plunger further defines a speed sensitive feature configured to permit a controlled leak of fluid from the pumping chamber to the spill port towards the end of a pumping stoke. The invention also encompasses a pumping plunger particularly suited for use in the above described pump.
    Type: Application
    Filed: June 17, 2008
    Publication date: December 25, 2008
    Inventors: George Nicholas Felton, Nebi Karakaya
  • Publication number: 20080298989
    Abstract: A rotating-to-translating conversion device having a piston member oscillating within a casing where a rotating shaft is positioned through the piston. The interaction between a groove member between the piston and the shaft is such that an engagement member positioned within the groove will provide an oscillating motion of the piston with respect to the shaft, and a sealing system provides a seal between first and second regions within the casing.
    Type: Application
    Filed: May 30, 2008
    Publication date: December 4, 2008
    Inventor: Steven J. Keays
  • Publication number: 20080232189
    Abstract: A homogeniser (1) for the continuous treatment of fluids at very high pressure comprises at least one reciprocating plunger (5) in a compression chamber (6) and a guide chamber (11) from a fluid intake position to a delivery position. Said compression chamber (6) opens into a manifold (27), inside a block (26) from which a delivery pipe (32) and an intake pipe (31) branch off. A first seal unit (21) is housed in the guide chamber (11), a second seal unit (24) is located close to the intersection between the compression chamber (6) and the guide chamber (11) and a third seal unit (35) is positioned upstream and downstream of each valve (28, 29) and the intersection between the manifold (27) and the compression chamber (6).
    Type: Application
    Filed: September 1, 2004
    Publication date: September 25, 2008
    Inventors: Marco Gandini, Simone Grandi
  • Patent number: 7374019
    Abstract: There is provided a lubricating method for a rolling bearing assembly capable of achieving a reliable lubrication and exhibiting a stable temperature rise. The method is for supplying a lubricant oil to the rolling bearing assembly during the operation thereof, in which in order to keep the temperature of a rolling bearing assembly (103) within a predetermined tolerance, the amount of the lubricant oil to be supplied during the operation is automatically or manually adjusted by means of a supply adjusting unit (102). Supply of the lubricant oil is performed in the form of an air/oil mixture by the use of a lubricant supply unit (101). The amount of the lubricant oil supplied varies depending on the rotational speed of the rolling bearing assembly (103).
    Type: Grant
    Filed: March 3, 2003
    Date of Patent: May 20, 2008
    Assignee: NTN Corporation
    Inventors: Futoshi Kosugi, Masatsugu Mori, Keiichi Ueda
  • Patent number: 7354255
    Abstract: The present invention is an improved vibratory pumping mechanism that increases the efficiency of utilization of the vibratory motion within a mechanism. More specifically, the mechanism includes a central chamber within which a piston is oscillated to draw fluid into the chamber and expel fluid from within the chamber outwardly through a nozzle connected to the chamber. The chamber includes a pressure tube connected to a rearward end of the chamber and to a secondary chamber positioned around and in fluid communication with the chamber. The pressure tube allows the negative pressure generated by the motion of the piston in either direction to be utilized in preventing any fluid from being directed out of the mechanism in a direction other than through the nozzle, thereby increasing the efficiency of the pump.
    Type: Grant
    Filed: February 23, 2005
    Date of Patent: April 8, 2008
    Inventors: Grigori Lishanski, Oleg Lishanski
  • Publication number: 20080019853
    Abstract: A high-pressure fuel pump is comprises of: a plunger which slidably fits to a cylinder and reciprocates for pressurizing and discharging a fuel taken in a pressurizing chamber; an inlet valve device for taking in a fuel into the pressurizing chamber; an outlet valve device for discharging the pressurized fuel from the pressurizing chamber; and a communicating pass which comprises a hole or a groove formed in the cylinder, and communicates between a pressurized fuel area and a gap between the cylinder and the plunger.
    Type: Application
    Filed: July 20, 2007
    Publication date: January 24, 2008
    Applicant: HITACHI, LTD.
    Inventors: Minoru HASHIDA, Hiroyuki YAMADA, Junichi SHIMADA, Toru ONOSE, Satoshi USUI, Masami ABE, Tohru HIMOTO
  • Patent number: 7033143
    Abstract: This invention relates to a pumping system. The design of the system is such that bi-directional operation can be achieved using a significantly smaller and hence lighter unit than those currently available. It uses the direction of rotation of the drive shaft to control the opening and closure of the by-pass means for controllably returning the fluid to the first reservoir.
    Type: Grant
    Filed: May 13, 2002
    Date of Patent: April 25, 2006
    Assignee: QinetiQ Limited
    Inventors: Colin Andrew Mead, Alan Thomas Parsons, Stephen Arthur Pointer, Mark Arwyn Bennett
  • Patent number: 7025323
    Abstract: Low power integrated pumping and valving arrays which provide a revolutionary approach for performing pumping and valving approach for performing pumping and valving operations in microfabricated fluidic systems for applications such as medical diagnostic microchips. Traditional methods rely on external, large pressure sources that defeat the advantages of miniaturization. Previously demonstrated microfabrication devices are power and voltage intensive, only function at sufficient pressure to be broadly applicable. This approach integrates a lower power, high-pressure source with a polymer, ceramic, or metal plug enclosed within a microchannel, analogous to a microsyringe. When the pressure source is activated, the polymer plug slides within the microchannel, pumping the fluid on the opposite side of the plug without allowing fluid to leak around the plug. The plugs also can serve as microvalves.
    Type: Grant
    Filed: September 21, 2001
    Date of Patent: April 11, 2006
    Assignee: The Regents of the University of California
    Inventors: Peter A. Krulevitch, William J. Benett, Klint A. Rose, Julie Hamilton, Mariam Maghribi
  • Patent number: 6986651
    Abstract: A pump priming apparatus including a housing through which fluid object material may be urged to flow, the housing including an intake portion and a pumping portion downstream from the intake portion. The apparatus further includes a piston assembly carried for reciprocation in the housing, the piston assembly and the housing being configured such that a partial vacuum is developed in the pumping portion of the housing as the piston assembly moves through the pumping portion of the housing toward the intake portion of the housing and such that the partial vacuum is substantially released upon the movement of the piston assembly into the intake portion of the housing, thereby causing the fluid object material in the intake portion of the housing to flow into the pumping portion of the housing.
    Type: Grant
    Filed: June 10, 2002
    Date of Patent: January 17, 2006
    Assignee: Balcrank Products, Inc.
    Inventors: Claude R. Whisenant, Rodney W. Burnette
  • Patent number: 6968815
    Abstract: An actuating device for hydraulically securing a camshaft of an engine of a motor vehicle in a start position has a solenoid valve controlling the flow of a pressure medium to a camshaft adjuster with a rotary slide valve that is fixedly connected to the camshaft and moves the camshaft into the required start position according to the pressure medium supplied to it by the solenoid valve.
    Type: Grant
    Filed: April 13, 2004
    Date of Patent: November 29, 2005
    Assignee: Hydraulik-Ring GmbH
    Inventors: Edwin Palesch, Alfred Trzmiel
  • Patent number: 6843641
    Abstract: A radial piston pump for generating high fuel pressure in common rail fuel injection systems of internal combustion engines having a drive shaft which is rotatably supported in a pump housing and is embodied eccentrically, and having a plurality of pistons, in particular three, each disposed in a respective element bore radially relative to the drive shaft, which are movable radially back and forth in the respective element bore by rotation of the drive shaft and each define one cylinder chamber, which communicates via a suction valve with a low-pressure chamber. Precisely one suction valve is controlled such that it opens and closes as a function of the angle of rotation of the drive shaft.
    Type: Grant
    Filed: November 9, 2000
    Date of Patent: January 18, 2005
    Assignee: Robert Bosch GmbH
    Inventor: Andreas Scharfenberg
  • Publication number: 20040253131
    Abstract: The present invention relates to a reciprocating compressor. There is a compression chamber inside of a cylinder, having a piston inserted therein. The piston includes a head, a skirt extended from a lower end of the head so as to be spaced away from an inside wall of the cylinder, and guide surfaces extended from an outside surface of the skirt. Since the skirt is not in contact with the cylinder, a friction loss between the piston and the cylinder is reduced, and the guide surfaces assist the piston to make stable reciprocation. The head has a projection so as to be inserted into a discharge hole when the piston is at a top dead center. According to this, a dead volume formed when the piston is at the top dead center is reduced, thereby improving an efficiency of the compressor.
    Type: Application
    Filed: April 1, 2004
    Publication date: December 16, 2004
    Applicant: LG Electronics Inc.
    Inventors: Dong Woo Park, Min Kyu Jung
  • Patent number: 6749402
    Abstract: A fluid dispense system having a computer control system that operatively controls a stepper motor driving a pump. The stepper motor actuates the pump piston through partial revolutions. The computer control system determines the number of stepper motor steps required to pump a desired amount of fluid by the pump by rotating the piston through segments which are less than a full revolution. Further, the controller varies the speed of the stepper motor to avoid splashing of the dispense fluid and motor stalling.
    Type: Grant
    Filed: July 30, 2002
    Date of Patent: June 15, 2004
    Assignee: Fluid Management, Inc.
    Inventors: Tim Hogan, Thomas J. Amsler, James R. Cleveland
  • Publication number: 20040101425
    Abstract: A master cylinder includes a cylinder main body forming a piston mount space and a piston mounted in the cylinder main body. An auxiliary supplying/discharging passage communicating sideways with the piston mount space is provided at a longitudinally middle portion of the cylinder main body. The inner circumferential surface of the cylinder main body and the outer circumferential surface of the piston are shaped such that a communication path communicating a pressure chamber near a supplying/discharging opening and the auxiliary supplying/discharging passage is formed at the outer side of a seal ring mounted on the piston with the piston moved back to a rearmost position most distanced from the supplying/discharging opening. The position of the piston and the pressure in the pressure chamber can be stabilized when the piston is located at a rearmost position from the supplying/discharging opening.
    Type: Application
    Filed: November 21, 2003
    Publication date: May 27, 2004
    Applicant: NABCO, LTD.
    Inventor: Hiroshi Okuma
  • Patent number: 6733256
    Abstract: The invention relates to a device for producing consumables, especially filled chocolates that consist of a coated filling. The aim of the invention is to provide a device for feeding substances of the consumables to nozzles in a controlled manner. To this end, the device is provided with pumps that comprise pump pistons in a pump chamber and at least two pump chambers are located in a pump housing one on top of the other.
    Type: Grant
    Filed: April 11, 2002
    Date of Patent: May 11, 2004
    Assignee: KMB Produktions AG
    Inventor: Josef Guido Knobel
  • Patent number: 6719542
    Abstract: A pump for a printing press includes a plunger within a cylinder to be rotatable and reciprocatable and having a cutaway portion at its distal end, and a constant-speed motor for rotating and reciprocating the plunger. The plunger and the output shaft of the motor are radially offset relative to each other and inclined with respect to each other. The output shaft of the motor is coupled to the plunger via a transmission mechanism which includes an arm and a connection member. The arm is connected to, for example, the plunger, and the connection member is connected to, for example, the output shaft of the motor. The arm and the connection member are connected with each other at an eccentric position in such a manner that the arm and the connection member can displace relative to each other in the radial direction and can change the intersecting angle therebetween.
    Type: Grant
    Filed: June 4, 2002
    Date of Patent: April 13, 2004
    Assignee: Tokyo Kikai Seisakusho, Ltd.
    Inventor: Kazuaki Shibuya
  • Publication number: 20040052664
    Abstract: A high-pressure fuel feed pump, wherein a pump housing is formed of an aluminum alloy, a cylinder is formed of iron base metal, the flange part of a flanged tube member is held in a contact part between the pump housing and the cylinder, the tube member is installed in the pump housing along the inner wall surface thereof. As a result, a seal surface is not corroded directly since cavitation occurs between the tip of the tube member and the pump housing.
    Type: Application
    Filed: July 1, 2003
    Publication date: March 18, 2004
    Inventors: Atsuji Saito, Hiroyuki Yamada, Toru Onose, Masami Abe, Hiroshi Odakura