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| Number | Title | Issue Date |
| 8104398 | Axial piston machine utilizing a swashplate design A hydrostatic axial piston machine utilizing a swashplate design has a cylinder drum (3) that is mounted so that it can rotate around an axis of rotation (2). The cylinder drum (3) is provided with cylinder bores (4), in each of which a p... | 01/31/2012 |
| 8069773 | Piston A piston is equipped with a skirt that has a sliding surface provided with an oil repellent resin layer. A solid lubricating resin layer and the oil repellent resin layer are exposed on the sliding surface. On the sliding surface, the oil repellent resin layer exten... | 12/06/2011 |
| 7513190 | High-pressure pump for a fuel injection system of an internal combustion engine A high-pressure pump having a rotationally driven drive shaft and at least one pump element which has a pump piston driven at least indirectly in a reciprocating motion by the drive shaft which piston is guided in a cylinder bore and with its end remote from the dri... | 04/07/2009 |
| 7415961 | Piston for internal combustion engine, compressor or the like A piston for internal combustion engine, compressor or the like, includes a piston ring, a piston skirt having a piston skirt wall. One or more lubricant channels and reservoirs are provided on an outer surface of the piston skirt. Lubricant is conducted to an outer... | 08/26/2008 |
| 7357067 | Spherical joint of a hydrostatic piston machine A hydrostatic piston machine having a cylinder block with several cylinders, in which are slidably mounted pistons in load engagement with a reaction member via transmission members, each transmission member is connected to at least one of the piston or the reaction... | 04/15/2008 |
| 7320555 | Cardan shaft structure with tightness adjustable functions A cardan shaft structure with tightness adjustable functions has a through-hole passing through spheres located at both ends of the cardan shaft body, and a taper socket respectively installed into the opening end of each sphere. A bolt is inserted into both spheres... | 01/22/2008 |
| 7287459 | Piston for internal combustion engine A piston for an internal combustion engine, the piston having a skirt part, comprises: a resinous coating layer formed on a surface of the skirt part; and a plurality of concaves regularly arranged in the resinous coating layer. The concaves are non-coated regions i... | 10/30/2007 |
| 7284526 | Ellipsoid roller bearing piston ring An improved piston ring suitable for use in an internal combustion engine is disclosed comprising a plurality of races sized to receive elongate rollers disposed around the circumference thereof. The elongate rollers may be shaped as a prolate ellipsoid or other rou... | 10/23/2007 |
| 7278390 | Piston-pin boss of a piston for an internal combustion engine The invention related to a piston-pin boss (18) of a piston (6) for an internal combustion engine, comprising a piston-pin bore (1) for receiving a piston pin. To improve the passage of oil and to form an oil reservoir, the interior surface (... | 10/09/2007 |
| 7246551 | Liquid handling device with surface features at a seal A sample handling tool includes a body having at least one plunger associated with a channel and arranged for axial movement within the channel. A seal is provided in the channel and sealingly engaged with a contact surface. The contact surface may include a surface... | 07/24/2007 |
| 7176166 | Slide member The present invention intends to provide a slide member with increasing an abrasion resistance and an adherence, a friction coefficient is further decreased. A part of the base member surface of the slide member is provided with a streak so that a surface rou... | 02/13/2007 |
| 7118046 | Sliding structure for shaft member with improved abrasion resistance and injector In a sliding structure in which a shaft member is retained slidably in a guide hole, the lack of an oil film caused by the edge contact of the shaft member to which a pressing load in the axial direction is applied is prevented. With the fact being taken into accoun... | 10/10/2006 |
| 7096844 | Four-stroke engine lubricated by fuel mixture A four-stroke engine includes a piston cylinder, and a piston located in the cylinder and movable within the cylinder. The engine includes a crankcase attached to the cylinder, the piston providing a separation boundary of a combustion portion of the cylinder from t... | 08/29/2006 |
| 7086152 | Engine piston and manufacture thereof A method of forming a low-friction, helically ridged skirt surface of an engine piston comprises cutting a continuous groove in a piston body rotating about axis so that adjacent groove turns intersect as ridges and carry lubricating oil which forms a film on the ri... | 08/08/2006 |
| 7086324 | Surfaces of the polygon or piston base stroke disc of injection pumps and processes for their manufacture The invention relates to the surfaces of the polygon (2) and/or the plunger foot plate (3) of a high-pressure pump for a diesel motor, at least one of the surfaces having cavities at least in the contact area between the polygon (2) and the plun... | 08/08/2006 |
| 7077402 | Combined oil ring A combined oil ring 4 is comprised of an oil ring 5 having upper and lower rails 7 and 8, and an expander 6 for applying contact pressure radially outwards on the oil ring 5. The outer circumferential surface 11 of th... | 07/18/2006 |
| 7048463 | Bolt element comprising a shaft part and a spherical head, assembly component and method for producing a bolt element Bolt element (10) having a shaft part (12) which is designed at a first end (14) for a rivet connection (16) to a panel element (18), in particular to a sheet metal part, is characterized in that the shaft part (12) has a sp... | 05/23/2006 |
| 7022419 | Composite plating film and a process for forming the same A composite nickel and copper alloy plating film (3) containing nickel and copper. Nickel is of high wear resistance and a nickel alloy improves the wear resistance of the film. Copper is of high resistance of the film. The film may further contain self-lubri... | 04/04/2006 |
| 6994014 | Closed cavity piston for hydrostatic power units and method of manufacturing the same Disclosed is a closed cavity piston made from a metal injection molding process. The piston has an elongated cylindrical body with a first end that is adapted to receive a slipper. The piston also has at least one hollow compartment and a hollow stem that transports... | 02/07/2006 |
| 6932197 | Gimbaled pad support A disc brake assembly is disclosed which is attachable to the wheel supporting portion of the frame of a cycle and which allows the orientation of the planar braking surface of the brake pad assembly to be infinitely variable within a defined range The disc brake as... | 08/23/2005 |
| 6928921 | Piston bore A piston for a compressor for use in hermetically encapsulated small-type refrigerating machines, with a cylinder-jacket-like sealing and guide surface section (1a, 2) as well as at least two substantially bridge- and cylinder-jacket-sector-like... | 08/16/2005 |
| 6837218 | Radial piston pump The invention relates to a radial piston pump for generating high fuel pressure in fuel injection systems of internal combustion engines, in particular in a common rail injection system, having a driveshaft, supported in a housing, that has an eccentrically embodied... | 01/04/2005 |
| 6796778 | Fuel injection pump having throttled fuel path for fuel lubrication In a fuel path through which fuel is supplied to a pump-cam chamber accommodating a drive shaft and a cam for lubrication, an annular throttle fuel path is formed between an inside wall of a cylindrical body and an outside wall of a sphere, when the sphere is in con... | 09/28/2004 |
| 6739238 | Sliding structure for a reciprocating internal combustion engine and a reciprocating internal combustion engine using the sliding structure A sliding structure for a reciprocating internal combustion engine, including sliding elements relatively slidable via lubricating oil therebetween, the sliding elements including sliding surfaces opposed to each other and lubricated with a laminar flow of the lubri... | 05/25/2004 |
| 6644936 | Swash plate type refrigerant compressor The outer diameter .PHI.d1 of a top face-side end portion 35 of pistons 7 is made slightly smaller than the outer diameter .PHI.d0 of a hollow cylindrical portion 36 of the pistons 7 other than the top face-side end portion 35. Thus, the tilt load of a to... | 11/11/2003 |
| 6555777 | Method of manufacturing bimetal slippers A method of manufacturing male bimetal slippers includes the steps of forming a stem having opposite first and second ends; rigidly affixing a ball on the first end of the stem to form a male slipper body; and capacitance discharge welding a wear pad to t... | 04/29/2003 |
| 6539836 | Piston for internal combustion engine An internal combustion engine for enhancing a heat radiation property of combustion gas, can sufficiently secure strength thereof relative to combustion gas, and a weight reduction thereof can be realized. A piston for an internal combustion engine is con... | 04/01/2003 |
| 6523456 | Sliding members and piston for internal combustion engine A sliding surface of at least one of sliding members sliding with respect to each other in a sliding direction comprises a protrusion extending along a direction intersecting the sliding direction and fine dimples provided on a surface of the protrusion. ... | 02/25/2003 |
| 6431053 | Piston for a swashplate reciprocating compressor The present invention relates to a piston for use in a swashplate type compressor. The piston includes a void in the exterior surface of the head region that is positioned at a distance from a region that receives a side load during operation of the compr... | 08/13/2002 |
| 6349679 | Circularly-curved piston engine This engine is substantially free from any vibration and noise, small in friction loss, improved in mechanical efficiency to a considerable extent, compact and lightweight, and applicable to a reciprocating piston engine. The engine comprises: curved cyli... | 02/26/2002 |
| 6324959 | Piston pump motor The invention can prevent a heat generation and a seizure due to a sliding friction between a piston and a cylinder in inclined shaft type and swash plate type hydraulic pumps even when they are made high speed. In order to achieve this, a piston pump mot... | 12/04/2001 |
| 6250206 | Hydraulic piston filling A filled hydraulic piston assembly includes a piston body having first and second ends and a compartment in the piston body extending inwardly from the second end toward the first end. The piston is filled with an insert element which is inserted into the... | 06/26/2001 |
| 6099274 | Pump to surface pump A reciprocating pump is provided for pumping subterranean fluids containing fine solids to surface. The pump comprises a pump barrel, piston and piston rod. The piston rod is suspended form reciprocating production tubing. The barrel is anchored in the ca... | 08/08/2000 |
| 6077056 | Reciprocating pump The invention relates to a high pressure reciprocating pump, for a fuel injection system of an internal combustion engine, having at least one piston, which is displaceably supported in a piston guide provided in a housing and therein defines a work chamb... | 06/20/2000 |
| 6016738 | Piston compressor of the horizontal type Piston compressor for compressing gas, comprising a frame with at least one cylinder which has an essentially horizontal axis, a piston which is reciprocable in the cylinder, a piston rod which at one end thereof is fixed to the piston, while the other en... | 01/25/2000 |
| 6006652 | Automotive refrigerant wobble plate type compressor piston with improved ball and socket joint A wobble plate compressor piston has a central aperture formed through its front surface, directly into the ball and socket joint that connects it to the drive plate. High pressure refrigerant and entrained lubricant mist are forced into the gap between b... | 12/28/1999 |
| 5983781 | Sliding bearing with self-adjusted load bearing capacity A sliding bearing, particularly for slippers of hydrostatic piston machines, with a support having a supporting surface on which slides a sliding piece having a sliding and sealing surface. Between the supporting surface and the sealing part of the slidin... | 11/16/1999 |
| 5842406 | Piston for compressors including a restrictor to prevent the piston from rotating A piston for use in a compressor that compresses gas containing lubricating oil is disclosed. The compressor includes a housing having a crank chamber and cylinder bores for accommodating the pistons. A swash plate is located in the crank chamber and is s... | 12/01/1998 |
| 5816134 | Compressor piston and piston type compressor A compressor has a piston (11) that reciprocates between a top dead center and a bottom dead center in a cylinder bore (2a) by means of a driving body (9) mounted on a rotary shaft (6) in a crank chamber (5) during the rotation of the rotary shaft (6). Th... | 10/06/1998 |
| 5806631 | Piston pin lubrication A number of embodiments of direct piston pin lubrication systems for reciprocating machines such as internal combustion engines. In all of the embodiments, the hollow interior of the piston pin is employed as a distribution passage with radial drillings e... | 09/15/1998 |
