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| Number | Title | Issue Date |
| 6913451 | Vacuum pump with fail-safe vanes A vacuum vane pump for generating a vacuum condition for aircraft instruments includes a rotor having a peripheral surface eccentrically mounted in a housing having a confrontingly opposed inner surface so that the opposed surfaces define a crescent-shaped chamber. ... | 07/05/2005 |
| 5509388 | Internal combustion rotary engine A rotary engine includes a cylindrical rotor having four spaced apart vanes therein mounted in a stator housing having an oblong perimeter casing which defines generally crescent shaped, diametrically opposite first and second working chambers in which th... | 04/23/1996 |
| 5409360 | Vacuum pumps A rotary pump comprising a stator body having a bore and a rotor assembly mounted eccentrically in the bore to form a cavity between the stator body and the rotor assembly. The rotor assembly has two blades slidably positioned in diametrically opposed slo... | 04/25/1995 |
| 5269668 | Folding-unfolding rotating flap meter-motor-pump A positive displacement fluid handling apparatus comprises a body including a circular cylindrical cavity with two closed ends and two port openings respectively open to the two opposite halves of the circular cylindrical cavity; a flap assembly including... | 12/14/1993 |
| 5156541 | Revolving vane pump-motor-meter with a toroidal working chamber A positive displacement pump-motor-meter has a housing structure and a rotor disposed within and supported by the housing structure in a rotatable arrangement about an axis of rotation, wherein the combination of the housing structure and the rotor provid... | 10/20/1992 |
| 5007813 | Rotary rolling piston compressor with fixed vane having a relieved incline section A rotary rolling piston type compressor having a cylinder mounted in a hermetic shell and a rolling piston driven by a crankshaft carried by the rotor of an electric motor whose stator is fixed internally to the shell. An external part of the cylinder has... | 04/16/1991 |
| 4090825 | Plate with passages for fluid rotative machines In a rotative machine for fluids which includes a plate formed with spiral-like passages extending from a central orifice to an annular interval and which also includes, facing the passages, a support rotatably mounting vane wheels for rotation about axes... | 05/23/1978 |
| 4012182 | Machines for energy conversion A machine for energy conversion includes a working chamber defined by two relatively movable parts and provided with inlets and outlets for the working medium, both parts having members serving as pistons and abutments which sealingly engage with the wall... | 03/15/1977 |
| 4009690 | Rotary internal combustion engine A rotary internal combustion engine comprising an elongated rotor having an oval shaped cross-section secured to a compartmentalized shaft rotatably disposed in an elongated cylindrical shaped bore in a stationary engine block. A plurality of vanes, havin... | 03/01/1977 |
| 3985473 | Rotary pump A rotary pump of the stationary single vane type wherein the vane is arranged to automatically accommodate for the direction of rotor rotation to provide for the flow of fluid through the pump in a single direction regardless of the direction of rotor rot... | 10/12/1976 |
