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| Number | Title | Issue Date |
| 8096787 | Straight-line piston fluid engine with wobble drive valve actuation An axial piston fluid engine having single-acting cylinders incorporating swivel-joint attachment of the cylinders to rotary control valves wherein straight-line piston movement is established for the elimination of side forces on the pistons. The pistons and the co... | 01/17/2012 |
| 7887308 | Volumetric pump with reciprocated and rotated piston A volumetric pump (1) comprising a piston (2) and a cylindrical chamber (3), contains an inlet port (10) and an outlet port (11). The piston (2) is actuated by a rotor (5) bearing an eccentric shaft (6). The sh... | 02/15/2011 |
| 7384249 | Fluid metering system A fluid metering system includes a housing having a piston chamber with first and second spaced ends, at least one housing inlet passage, and at least one housing outlet passage. The housing inlet and housing passages communicate with the piston chamber. A piston is... | 06/10/2008 |
| 7356996 | Apparatus and method for holding a cryogenic fluid and removing cryogenic fluid therefrom with reduced heat leak The apparatus comprises a double walled vacuum insulated vessel defining a cryogen space for holding a cryogenic fluid, a pump assembly comprising a pump with a suction inlet disposed within the cryogen space, and at least one elongated member extending from the pum... | 04/15/2008 |
| 7033149 | Medium pump adapted for ease of disassembly and assembly A medium pump for a motor includes a pump case with a pump cylinder and a pump piston positioned displacaebly in the pump cylinder in the direction of a pump axle. The pump piston rotates about the pump axle by running off an oblique control surface and realizes axi... | 04/25/2006 |
| 6305917 | Pump consisting of a mechanism transmitting to a tubular circuit system periodic rotational inertial forces developing in the liquid contained therein continuous pressure and flow The details necessary for embodying the present invention are: a supporting frame; two rotors; a system for the periodic alternating motion thereof with phases of 0° and 90°; two tubular 2-phase circuits (CB) consisting of two parallel identical tubes t... | 10/23/2001 |
| 5558504 | Magnetostrictive pump for applying pastes and adhesives A device is proposed for applying material such as solder paste and glue in discrete points, particularly for applying solder paste on electronic circuit boards. The device comprises a pump house (202-205; 301, 307), a tube or a channel (206) by means of ... | 09/24/1996 |
| 5478217 | Reciprocating pump for pumping viscous materials A positive displacement pump is disclosed having a pump body, a cylinder member rotatably accommodated within the pump body and a piston member within the cylinder member. At least a portion of the cylinder member is rotatable about the cylinder axis in s... | 12/26/1995 |
| 5403167 | Structure of liquefield hydrogen pump The invention relates to a structure of a liquefied hydrogen pump, located within a liquefied hydrogen fuel tank of a hydrogen (gas ignited) engine, in which a cylinder holder is linked to a lower end of the connecting rod which is reciprocated upwardly a... | 04/04/1995 |
| 5221195 | Pressure testing pump A hand lever actuated pump for testing a water line for leaks by pumping water into the line under pressure comprises a container for water to be pumped and a hand lever actuated piston and cylinder type pump having suction and discharge strokes in respon... | 06/22/1993 |
| 4842200 | Pivotable nozzle The present invention relates to a pivotable spraying nozzle intended to be used in the treatment of a chassis for a car body. The device comprises a nozzle and a feeding tube for a chassis treatment agent. The nozzle is supported in a hydraulic/pneumatic... | 06/27/1989 |
| 4797073 | Pump with rotating and reciprocating piston A plunger pump has a plunger adapted to slide in the axial direction and rotate by a combination of worm and worm wheel. A cylindrical pump body has an axial extension at one free end through which a control pin extends upwardly at a right angle relative ... | 01/10/1989 |
| 4772184 | Piston pump for abrasive conveyances The invention relates to reciprocating pumps for liquids and gases, especially fluid-solid dispersions containing abrasives. The cylinder is made from material which is harder than the abrasive particles of the fluid. This cylinder rotates around the pist... | 09/20/1988 |
| 4767287 | Reciprocating piston mechanism A reciprocating opposed piston mechanism having at least one cylinder assembly mounted to oscillate in rotary relation to a block about a central axis, two opposing pistons reciprocally mounted within the cylinder, each of the pistons having an eccentric ... | 08/30/1988 |
| 4419054 | Liquid fuel injection pumping apparatus A liquid fuel injection pumping apparatus of the rotary distributor type includes a cam ring which is angularly adjustable to vary the timing of delivery of fuel. The setting of the cam ring is determined by a piston in which is located a servo valve. The... | 12/06/1983 |
| 4371320 | Semi-rotary hydraulic pump A semi-rotary pump having a spherical pump body (4) mounted for rotation within a supporting housing (1) about an axis (X--X). A sector (5), having two diametrically opposed segment portions (6,7), is mounted for oscillation within the pump body about an oscil... | 02/01/1983 |
| 4309152 | Hydraulic motor/pump with variable mechanical advantage The invention is an efficient hydraulic motor/pump whose mechanical advantage can be varied while it is operating. Preferred embodiments described include a multi-cylinder reciprocation motor/pump, a variable level power extraction system used with a wave... | 01/05/1982 |
| 4231716 | Mechanical lubricating pump A mechanical lubricating pump for supplying lubricating oil to rotary parts of machines and equipment. A rotatable distributor is inserted in the lengthwise direction of a pump body, and a suction port and a discharge port are provided in the diametrical ... | 11/04/1980 |
| 4036326 | Lubricating oil pump A lubricating oil pump comprising a distributor rotatably fitted in a cylinder chamber of a pump body, a plunger fitted to said distributor for the purpose of forming a pump chamber between said distributor and said plunger, said plunger being rotatable i... | 07/19/1977 |
| 3967612 | Lubricating oil pump for use in an internal combustion engine A lubricating oil pump which is responsive to the engine load to supply an associated internal combustion engine with an optimum quantity of lubricating oil. The lubricating oil pump determines the oil outlet frequency depending on the engine speed and de... | 07/06/1976 |
