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| Number | Title | Issue Date |
| 7648350 | Conveying device A conveying device for a vehicle brake system, to convey pressure fluids into at least one vehicle brake, or to convey pressure fluids into a pressure fluid accumulator, or to convey pressure fluids into a master brake cylinder with at least one moveable piston (... | 01/19/2010 |
| 7553137 | Discharge valve assembly of reciprocating compressor A discharge valve assembly of a reciprocating compressor comprises: a discharge valve for opening or closing a compression space for compressing a refrigerant in a cylinder; a valve spring for elastically supporting the discharge valve as its one end is connected to... | 06/30/2009 |
| 7410347 | Reciprocating fluid pump assembly employing reversing polarity motor A reciprocating pump includes a drive section and a pump section. The drive section has a reciprocating coil assembly to which alternating polarity control signals are applied during operation. A permanent magnet structure of the drive section creates a magnetic flu... | 08/12/2008 |
| 7390174 | Piston pump A piston pump (10) for a hydraulic consumer of an electronically controlled vehicle brake system, carries a stepped piston (50, 50′) and centers a sealing assembly (26, 26′) which is retained in an axial direction Ax by a step (52, 52′ | 06/24/2008 |
| 7381035 | Piston pump with check shaft A pump for use with a dispensing unit of a liquid hot melt adhesive system, dispensing units including the pump, and a method of operating a pump for pumping a liquid like liquid hot melt adhesive. The pump has a piston movable within a pumping chamber for transferr... | 06/03/2008 |
| 7322804 | Metering pump device for a vehicle heater A metering pump device for a vehicle heater includes an inlet chamber, an outlet chamber, a first valve arrangement between the inlet chamber and the outlet chamber, which permits a fluid exchange substantially only from the inlet chamber to the outlet chamber, a di... | 01/29/2008 |
| 7290559 | Check valve for a high-pressure pump of a fuel injection system for an internal combustion engine A check valve having a valve housing inserted into a receptacle in which housing a pistonlike valve member is guided longitudinally displaceably and cooperating with a valve seat on the valve housing. The valve member is urged in the closing direction by a prestress... | 11/06/2007 |
| 7281911 | Linear compressor Disclosed herein is a linear compressor. In the present invention, an edge of a loop pipe, which is inserted into an outer exhale cover is inclined. It takes effect in enhancing reliability of the product and its assembling capacity, not to clog the edge of the loop... | 10/16/2007 |
| 7179065 | Linear compressor Disclosed herein is a linear compressor. In the present invention, a spring sheet is equipped in an exhale cover to prevent an edge and an outer circumference of an exhale spring from touching with the exhale cover. A surface of the spring sheet is treated with a me... | 02/20/2007 |
| 7163384 | Reciprocating compressor with a linear motor A reciprocating compressor with a linear motor having an actuating means operatively coupling a reciprocating piston to the motor; and a resonant spring means mounted under constant compression to the actuating means by the mutual seating of a pair of supporting sur... | 01/16/2007 |
| 7118352 | Hydraulic metering device The metering device for a liquid medium comprises a cylinder and a piston operatively disposed therein to define a metering chamber ahead of the piston. The outlet end of the cylinder is open and closed by an evacuation valve. The piston is driven forwardly through ... | 10/10/2006 |
| 7117782 | Compressor and method of lubricating the compressor A compressor is provided for guiding lubricating oil separated from the discharged refrigerant by an oil separator to a radial bearing supporting a drive shaft through an oil supply hole. A rotating member that rotates together with the drive shaft is provided adjac... | 10/10/2006 |
| 7056106 | Discharge valve apparatus for reciprocating compressor A discharge valve apparatus for a reciprocating compressor comprises a discharge cover having built-in volume so as to cover a front end surface of the cylinder; a discharge valve disposed so as to be contacted/separated to/from the front end surface of the cylinder... | 06/06/2006 |
| 7048521 | High pressure fuel supply pump with an intake valve member and a discharge valve member aligned along a plunger axis In a high pressure fuel supply pump, a housing is provided with a through-hole having a step. A plunger is slidably accommodated in the through-hole on an axial end side thereof. An intake valve member is positioned in the through-hole on an axially opposite side to... | 05/23/2006 |
| 7021911 | Reverse-ported pump A pump used in vehicle controlled braking systems provides a reverse direction of flow through a cylinder bore of the pump and utilizes an inlet check valve located outside of the piston at the end of the cylinder bore opposite the piston, in conjunction with an out... | 04/04/2006 |
| 6913450 | Suction valve coupling structure for reciprocating compressor A suction valve coupling structure for a reciprocating compressor is disclosed in which a piston being linearly moved in a cylinder upon receipt of driving force from an electric mechanism unit, according to which gas flows through a gas flow passage formed therein,... | 07/05/2005 |
| 6902381 | Cylinder head for reciprocating compressor A cylinder head for reciprocating compressor comprises a frame including a insertion groove unit so as to make a concentric circle with a through hole penetrated in the body unit; a cylinder in which a cylinder body unit and a flange unit is coupled so as to be loca... | 06/07/2005 |
| 6884045 | Hydraulically powered diaphragm pump with pretensioned diaphragm A hydraulically driven diaphragm pump with a diaphragm clamped at its edge between a pump body and a pump cover separating a delivery chamber from a hydraulic chamber and pretensioned in the direction of its intake stroke by spring force. A hydraulic diaphragm drive... | 04/26/2005 |
| 6783337 | Check valve seal assembly A check valve assembly includes a plug having a first end and a second end spaced along a longitudinal axis of the check valve assembly. The check valve assembly also includes a first valve seat, wherein the first end of the plug sealingly contacts the first valve s... | 08/31/2004 |
| 6764286 | Piston pump with pump inlet check valve A piston pump comprises cylinder attached within a cavity of a pump housing. An outlet check valve seat is defined about an outlet of the cylinder. A piston is slidably received in a bore of the cylinder and has a first passageway formed therein. A cylinder head enc... | 07/20/2004 |
| 6736613 | Acceleration fuel pump having a resilient check valve member for a combustion engine carburetor An acceleration fuel pump for use with a combustion engine carburetor is an integral part of the carburetor body and provides an additional flow of fuel to the fuel-and-air mixing passage of the carburetor during acceleration of the engine. The acceleration fuel pum... | 05/18/2004 |
| 6702557 | Valve assembly prohibiting re-expansion of residual fluid A fluid compressing apparatus including a cylinder block having a cylinder bore with a diameter penetrating through the cylinder block in a lengthwise direction, a discharge chamber having a diameter larger than the diameter of the cylinder bore, and at l... | 03/09/2004 |
| 6517330 | Reciprocating pump A reciprocating pump includes a chamber, a reciprocating member arranged to induct a fluid into the chamber and discharge the fluid from the chamber to a delivery side of the pump, and a piezoelectric element attached to the pump and arranged to detect pr... | 02/11/2003 |
| 6450787 | Piston pump In a piston pump, in particular, for the pressure fluid conveyance in hydraulic, slip-controlled brake systems, comprising at least one piston, a suction valve and a pressure valve, it will be possible for the suction and pressure valves to be externally ... | 09/17/2002 |
| 6450788 | Piston pump for high-pressure fuel delivery Disclosed is a piston pump having a pump housing with a cylinder head comprised of a first plate and a second plate. The plates which rest against each other and are screwed to the pump housing, have a first conduit which carries low-pressure fuel and lea... | 09/17/2002 |
| 6322328 | Radial piston pump In a radial piston pump (2), which has pump elements (10) arranged radial in the pump housing (7) and which in turn have an inlet valve (11) and an outlet valve (12) activated by the medium, the valves (11, 12) are disposed at the outer side of the pump e... | 11/27/2001 |
| 6264439 | Low power electromagnetic pump An electromagnetic pump including a housing having an interior fluid containing region, a check valve operatively associated with the fluid containing region for allowing fluid flow in a direction from an inlet toward an outlet and blocking fluid flow in ... | 07/24/2001 |
| 6241491 | Device for supplying an apportioned minimum amount of fluid The invention relates to a pulse-triggered device for supplying an apportioned minimum amount of fluid, particularly oil for lubricating pneumatic systems. A valve actuated positive-displacement member may be moved using a pulse-triggered device located i... | 06/05/2001 |
| 6190143 | Piston pump with zero to negative clearance valve An improved piston-type vacuum pump comprises a reciprocating piston disposed within a cylinder having a proximal end and a distal end, an inlet port formed in the side of the cylinder near the proximal end, and a spring-biased outlet valve, such as a pop... | 02/20/2001 |
| 6152710 | Discharge valve system for linear compressor In a linear compressor including a cylinder having a compression chamber, a piston compressing a gas by a straight reciprocation in the cylinder, and a cylinder head cover covering the compression chamber of the cylinder, and having a discharge valve syst... | 11/28/2000 |
| 6071097 | Single-piece piston for use in a pneumatically-activated pump A single-piece piston for use in a pneumatically-activated pump to meter a predetermined amount of lubricant or other liquid. The piston has a grooved end that includes a head portion and a circumferentially-disposed angled channel for containing a sealin... | 06/06/2000 |
| 5984652 | Single-piece piston with central bore for use in a pneumatically-activated pump A single-piece piston for use in a pneumatically-activated pump to meter a predetermined amount of lubricant or other liquid. The piston has a grooved end that includes a head portion and a circumferentially-disposed angled channel for containing a sealin... | 11/16/1999 |
| 5947708 | Axial flow valve system for linear compressor An axial flow valve system for a linear compressor which is capable of enhancing the operation of the compressor by securely fixing an intake valve comprising an axial flow valve system to prevent an undesired axial movement of the intake valve, promptly ... | 09/07/1999 |
| 5921755 | Dry vacuum pump A vacuum pump is provided with at least one cylinder having a cylinder liner and a piston mounted for reciprocating movement within the cylinder liner. The piston is connected to a crankshaft for reciprocating the piston and the piston is provided with a ... | 07/13/1999 |
| 5897304 | Flow-through vertical filling pump with a plurality of diaphragms A flow-through filling pump for receiving a liquid supply and discharging a predetermined amount of the liquid therefrom includes a housing defining a supply chamber and a discharge chamber and a reciprocating piston positioned in the housing intermediate... | 04/27/1999 |
| 5860798 | Pump for pumping a fluid comprising a liquefied gas and apparatus having a pump The pump has a sleeve-like bearer. This contains a bush in which a piston is displaceable along an axis. The bearer inner surface and the bush outer surface are adjacent to one another in parts and are separated from one another in parts by an intermediat... | 01/19/1999 |
| 5802849 | Actuating device for coupling of an automatic transmission of a vehicle An actuating device for a coupling of an automatic transmission of a vehicle includes a housing and at least one piston slide positioned in the housing for pumping a pressure medium to a coupling element. At least one piezo element is positioned in the ho... | 09/08/1998 |
| 5713723 | Volumetric hand pump A volumetric hand pump having a transparent pump chamber and a fixed full stroke volume. The transparent pump chamber allows visual observation of the amount of fluid being pumped when less than the fixed full stroke volume is used. The transparent pump c... | 02/03/1998 |
| 5591012 | Conveying pump for supply containers of various heights In a conveying pump having a cylinder introducible into a reservoir and having a pump piston, whereby the conveyed medium is supplied via an ascending line to a discharge line, an ascending line formed of two sections adjustable relative to one another is... | 01/07/1997 |
| 5584676 | Compressor discharge valve having a guided spherical head A compressor assembly is disclosed including a compressor mechanism mounted within a hermetically sealed housing. A cylinder block contains a reciprocating piston along with a discharge valve assembly. The discharge valve assembly includes a valve plate w... | 12/17/1996 |
