| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 417471000 | Biasing means effects eduction stroke of abutment driven, pressure producing pumping member | 10 |
| 20080213112 | Load ring mounting of pumping plunger - A clamping and seal loading technique for securing the plunger sleeve to the pump housing of a single plunger fuel pump. This is achieved by providing a load ring between a sleeve retainer and the sleeve, such that the axial force applied by the retainer during installation and attachment to the plunger bore wall of the housing, is distributed more evenly on the sleeve and the sealing surface of the sleeve against the housing adjacent to the pumping chamber. The even distribution of force minimizes misalignment of the sleeve and thus maintains concentricity between the sleeve and the plunger. | 09-04-2008 |
| 20090068039 | PISTON PUMP - A piston pump is proposed, having a pump housing, in which housing a pump piston is guided axially movably, so that upon an actuation of the pump piston, a fluid is pumped from an intake side to a compression side, via a pump chamber bordering on the pump piston, the compression side being provided with an outlet valve, which is preceded by a damping element. | 03-12-2009 |
| 20090097998 | Fixed Displacement Pump - A fixed displacement pump. The fixed displacement pump may include a chamber, a piston positioned within the chamber, and a collar positioned within the chamber to as to limit movement of the piston within the chamber. | 04-16-2009 |
| 20090269227 | PISTON PUMP WITH AT LEAST ONE STEPPED PISTON ELEMENT - A piston pump with at least one driven stepped piston element disposed longitudinally movably in a housing is disclosed. The piston element and housing define a plurality of pressure chambers whose volumes vary as a function of the motion of the stepped piston. A volume of the first pressure chamber is decreased during an intake stroke of the piston that increases the volume of the second pressure chamber. A volume of a third pressure chamber, communicating with the pumping side and defined by the stepped piston element and the housing, is increased by a defined volumetric value during the compression stroke and decreased by the during the intake stroke; the defined volumetric value is less than the change in volume of the second pressure chamber during the compression stroke of the stepped piston element. | 10-29-2009 |
| 20100247358 | PLASTIC ELEMENT, PISTON PUMP, AND ASSEMBLY METHOD - The invention relates to a one-piece plastic element having an inlet valve cover and an inlet valve seat element for an inlet valve of a piston pump of a hydraulic brake system of a motor vehicle. The inlet valve is designed as a check valve, and the inlet valve cover and the inlet valve seat element are connected to each other by a designed fracture point. The invention further relates to a piston pump having an inlet valve cover and inlet valve seat element made of a one-piece plastic element. The invention further relates to a method for assembling the inlet valve designed as a check valve. | 09-30-2010 |
| 20110158835 | ROLLER LIFTER, ROLLER LIFTER PRODUCTION METHOD AND LIQUID PUMP - A roller lifter including a roller that is rotatably supported and a body that supports the roller, the body including: a base portion in the form of a flat plate; a roller holding portion in the form of a pair of opposing plate-shaped portions that are formed by bending towards one of plate surfaces of the base portion, the roller holding portion being configured to hold the roller between the plate-shaped portions; and a guide portion in the form of a plate-shaped portion formed by bending towards the other one of the plate surfaces of the base portion and also formed by curving so that the plate-shaped portion follows a cylindrical surface shape in which a direction perpendicular to the plate surface of the base portion is the axial direction of the cylinder, the guide portion being configured to form a guide surface in a shape that follows the cylindrical surface shape. | 06-30-2011 |
| 20140170003 | RECIPROCATING COMPRESSOR WITH VAPOR INJECTION SYSTEM - A compressor assembly is provided and may include a first compression cylinder, a first compression piston disposed within the first compression cylinder that compresses a vapor disposed within the first compression cylinder, and a crankshaft that cycles the first compression piston within the first compression cylinder. The compressor assembly may additionally include a first control piston moveable between a first state restricting passage of intermediate-pressure fluid into the first compression cylinder and a second state permitting passage of intermediate-pressure fluid into the first compression cylinder. | 06-19-2014 |
| 20140255227 | PLUNGER ASSEMBLY FOR A HIGH-PRESSURE FUEL PUMP, AND HIGH-PRESSURE FUEL PUMP - The invention relates to a plunger assembly for a high-pressure fuel pump for supporting a reciprocating pump piston ( | 09-11-2014 |
| 20140308143 | PLUNGER PUMP - A plunger pump is provided which comprises: a pump body having a cylinder hole with an expanded diameter section; a plunger defining, together with the lid member, a pump chamber; and a coiled spring disposed within the expanded diameter section. The coiled spring includes: an effective winding section; a lid-side seat winding section; and a plunger-side seat winding section. The lid-side seat winding section has an outer diameter larger than an outer diameter of the effective winding section, and the plunger-side seat winding section has an outer diameter smaller than an outer diameter of the plunger. With this configuration, the coiled spring within the pump chamber can have increased stability, and can be located in the center of the pump chamber. | 10-16-2014 |
| 20150017037 | SEAL ARRANGEMENT - A seal arrangement is provided for sealing a first medium from the environment or from a second medium, in a device having a movable element and a fixed element, wherein the movable element is configured for linear to-and-fro movement along a longitudinal axis and the fixed element forms a receptacle for the movable element. It is proposed that the seal arrangement should include a bellows having one or more layers made from a PTFE material, wherein the bellows at least partly receives the movable element, and wherein a first end region of the bellows is fastened in force-locking and sealing manner to the fixed element and a second end region of the bellows is fastened in force-locking and sealing manner to the movable element. | 01-15-2015 |
