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| Number | Title | Issue Date |
| 7252032 | Fluid actuator A fluid actuator configured for achieving extended cycle life and reduced overall actuator height. The actuator may include a nesting arrangement between portions of the actuator to reduce overall height and provide stability. The actuator may also join movable memb... | 08/07/2007 |
| 7125228 | Pressure washer having oilless high pressure pump An oilless high pressure pump suitable for use in devices such as pressure washers and the like is described. The pump includes an eccentric assembly suitable for converting rotary motion of a rotating shaft to rectilinear motion. One or more straps couple the eccen... | 10/24/2006 |
| 6945926 | Muscle energy converter A muscle energy converter for a patient. The converter includes a casing having a fluid port. The converter includes a bellows mechanism disposed in the casing adapted to contain fluid. The converter includes an actuator arm mechanism adapted to be attached to a ten... | 09/20/2005 |
| 6904395 | System and method of generating a finite element mesh for a threaded fastener and joining structure assembly A system and method of generating a finite element mesh for a threaded fastener and joining structure assembly includes a computer system for generating a mesh model of the threaded fastener and joining structure assembly by creating nodes and elements for each non-... | 06/07/2005 |
| 6866486 | Pressure washer having oilless high pressure pump An oilless high pressure pump suitable for use in devices such as pressure washers and the like is described. The pump includes an eccentric assembly suitable for converting rotary motion of a rotating shaft to rectilinear motion. One or more straps couple the eccen... | 03/15/2005 |
| 6467394 | Oilless high pressure pump An oilless high pressure pump suitable for use in devices such as pressure washers and the like is described. The pump includes an eccentric assembly suitable for converting rotary motion of a rotating shaft to rectilinear motion. One or more straps coupl... | 10/22/2002 |
| 6397729 | High pressure pump having bearing assembly pre-load apparatus An apparatus is described for capturing a bearing assembly in a device such as a high pressure pump or the like so that undesired pre-load within the bearing assembly is substantially reduced or eliminated. The apparatus is comprised of a fastener for cap... | 06/04/2002 |
| 6357339 | Multi-stage piston actuator A multi-stage piston actuator includes an operation stem, a plurality of pistons provided on the operation stem at different axial positions, a cylinder in which the pistons are slidably fitted, and a separation wall provided within the cylinder, which de... | 03/19/2002 |
| 5419688 | Mounting for oilless air compressor An oilless reciprocating air compressor that is mountable on the inside wall of a cargo container. The compressor has a high strength cast metal crank case and a lighter motor housing attached thereto. A special bracket is provided that attaches to both t... | 05/30/1995 |
| 5241895 | Air-powered splined rotary actuator An air-powered actuator having a body with first and second ends, an axially transverse annular bulkhead positioned therebetween, and an output shaft with a splined exterior portion. The body includes first and second end walls with each end wall having a... | 09/07/1993 |
| 5123334 | Pump or motor with secondary piston connected to guide member of a main piston Pump or motor comprising at least one cylinder housing being closed at both ends and a piston body received in said housing so that at both ends of said housing a working compartment is formed, the piston body being provided with a cavity shaped such that... | 06/23/1992 |
| 4966067 | Involute cam actuator with piston drive A mechanism for converting linear displacement of a piston to angular displacement of a shaft by positioning a cam in a recess of a unitary piston which is adapted for positioning by differential fluid forces applied to opposite ends of the piston. To pro... | 10/30/1990 |
| 4796514 | Rotary/linear convertor A rotary/linear convertor which comprises a first member may be in the form of a piston (14, 15, 16, 17, 114, 115, 116, 117) and a guide which is preferably in the form of a cylinder (12, 112) the first member being arranged for linear movement within or ... | 01/10/1989 |
| 4756238 | Apparatus for performing plural operations on a common workpiece An actuator including a first cylinder chamber and a second cylinder chamber defined as separate entities in a cylinder for receiving a first piston and a second piston therein respectively. One of the first and second cylinder chambers is connected to an... | 07/12/1988 |
| 4729291 | Gas compressor The Compressor is small, compact and lightweight in that it is formed of the barest essentials. It has a pair of in-line cylinders, with pistons reciprocatable therein, and the crankshaft, having only one crank, is drivingly coupled to one of the pistons.... | 03/08/1988 |
| 4203351 | Fluid motor actuator for rotating a shaft back and forth Fluid motor actuator having two pistons reversely movable in a common cylinder, the pistons each carrying at least three extensions on their proximal sides, one of which being provided with a rack camming with one common spur gear fastened on a transverse... | 05/20/1980 |
| 4134329 | Control devices having pivotal output elements driven by means of jacks A device for controlling two output elements pivotally mounted with respect to two stationary elements is provided with two coaxial rectilinear double action pressure fluid jacks. The two stationary elements are respectively secured to the ends of a stati... | 01/16/1979 |
| 4090430 | Swash plate type compressor A swash plate type compressor to provide reciprocation of cylindrical guide members arranged around a driving shaft axis and a corresponding number of pistons respectively connected to the cylindrical guide members with lubricating means arranged in compa... | 05/23/1978 |
| 3991657 | Vaned hydraulic motor A vaned hydraulic motor which includes a rotor adapted to rotate in excess of 180° with respect to the stator, has, in an axial juxtaposition, a middle circumference annular chamber and two outer circumferential annular chambers flanking the middle annul... | 11/16/1976 |
| 3967535 | Uniflow steam engine A uniflow steam engine of the multi-cylinder type wherein the cylinders are rotatably mounted within a jacket having a sinusoidal cam track therein. Extending through slots, the ends of which are the exhaust ports in the cylinders and into the cam track a... | 07/06/1976 |
