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| Number | Title | Issue Date |
| 7341437 | Capacity-changing unit of orbiting vane compressor Disclosed herein is a capacity-changing unit of an orbiting vane compressor that is capable of selectively accomplishing compression or communication in inner and outer compression chambers of a cylinder through simple manipulation of a valve, thereby easily changin... | 03/11/2008 |
| 6533561 | Scroll type compressor In a scroll type compressor (1) that includes a fixed scroll (21) fixed inside of a casing (10) and a movable scroll (22) meshed with the fixed scroll (21) and presses the movable scroll (22) against the fixed scroll (21), the pressing force of the movabl... | 03/18/2003 |
| 5988998 | Rotary pump having a reinforced flexible annular diaphragm A rotary diaphragm fluid pump includes a rigid tubular body with internal annular groove, a tubular flexible diaphragm whose central portion is caused to orbit by an eccentrically driven bearing. Preferably the diaphragm is a moulding which features an el... | 11/23/1999 |
| 5951268 | Sperial vacuum pump having a metal bellows for limiting circular translation movement A vacuum pump with circular translation cycle comprises a stationary body (10) with a stationary disc (13, 14) that includes, at least on one side thereof, a spiral-shaped projection (23, 24, 25), a movable disc (30) facing the stationary one (13, 14) and... | 09/14/1999 |
| 5803723 | Scroll fluid machine having surface coating layers on wraps thereof A wrap of an orbiting scroll member and a wrap of a fixed scroll member are each provided with a non-rigid surface coating layer having a predetermined thickness. An orbiting radius varying mechanism is provided between a driving shaft and the orbiting sc... | 09/08/1998 |
| 5800140 | Compact scroll fluid device A compact scroll fluid device includes a pair of wrap support elements with one of the wrap support elements having an inner axial surface formed with an involute spiral recess and the other of the wrap support elements having an involute spiral wrap memb... | 09/01/1998 |
| 5746719 | Fluid flow control system incorporating a disposable pump cartridge A fluid flow control system includes a disposable cartridge which is receivable in a shifting carrier body portion of a control module. The disposable cartridge houses a disposable pump and a pressure transducer element which are fluidly interconnected by... | 05/05/1998 |
| 5511959 | Scroll type fluid machine with parts of sintered ceramics A scrool fluid machine including a fixed scroll an orbiting scroll an Oldham ring and bearing portions which are entirely or partly made of a reaction-bonded precise sintered ceramics which is superior in near-net-shape property, and particularly made of ... | 04/30/1996 |
| 5478219 | Lightweight scroll element and method of making An orbiting scroll is made with a ceramic particle reinforced aluminum metal matrix composite. The resultant part has increased wear resistance, closer thermal expansion matching with cast iron, can be used without tip seals and offers the advantages asso... | 12/26/1995 |
| 5131827 | Fiber- and whisker-reinforced injection moldable resin composition for scroll compressor parts and method of manufacturing scroll compressor parts This invention relates to a resin composition for scroll compressor parts which comprises (A) about 40 to 70 parts by weight of at least one thermoplastic resin selected from the group consisting of polyphenylene sulfide, polyetheretherketone, polyetherke... | 07/21/1992 |
| 5090882 | Rotary fluid machine having hollow vanes and refrigeration apparatus incorporating the rotary fluid machine A rotary compressor has a plate-like hollow vane disposed in sliding contact with a rotary piston. The vane has an internal cavity formed by a plurality of bores each having a substantially rectangular cross-section. The corners of each bore are each form... | 02/25/1992 |
| 5071329 | Scroll type fluid transferring machine with thermoplastic Oldham ring A scroll type fluid transferring machine comprises a stationary scroll having a wrap member, a movable scroll having a wrap member combined with the stationary scroll, a driving means for causing the movement of revolution of the movable scroll along a ci... | 12/10/1991 |
| 4875839 | Scroll member for use in a positive displacement device, and a method for manufacturing the same A scroll member comprising a metallic end plate having a spiroidal groove on one side thereof, and a through-hole communicating with the groove, and a resin wrap joined to the groove of the end plate so as to protrude from the surface of the end plate. Th... | 10/24/1989 |
| 4836759 | Rotary pump with orbiting rotor of harder material than stator A reversible, self-priming rotary pump has a housing with a stator of elastomeric material which is softer than the elastomeric material of the rotor on a cam on shaft. The inlet and exhaust ports are separated by a lobe received in a recess in the stator... | 06/06/1989 |
| 4802831 | Fluid machine with resin-coated scroll members A compressor has stationary and orbiting scroll members formed thereon with spiral wraps engaged with each other to define compression chambers which, when the orbiting scroll member is moved relative to the stationary scroll member, are radially inwardly... | 02/07/1989 |
| 4789315 | Positive displacement machine, more particularly pump, and method for fabricating such pump The machine comprises two plate-like supports (9, 12) each provided with a crown of displacement blades (10), respectively displacement chambers (11), engaged into each other, and displaceable into a relative circular translation motion. The drive is impl... | 12/06/1988 |
| 4781550 | Scroll compressor with driving and driven scrolls In a scroll type compressor, the shaft of a driven scroll is rotatably supported in a sealing container so that the axis of rotation of the driven scroll shaft is deviated from the axis of rotation of a driving scroll; the wrap plates of the driving and d... | 11/01/1988 |
| 4731000 | Spiral compressor with guides for fixing the spiral element against rotation A spiral compressor has a two-part housing, a displacement element positioned between two parts of the housing and having a spiral wall extending into a spiral chamber, formed in one of the housing parts, so that two working chambers are defined in the sp... | 03/15/1988 |
| 4579512 | Scroll-type fluid machine with radial clearance between wraps A scroll-type fluid machine having a stationary scroll member and an orbiting scroll member each of which includes a disc-like end plate and a spiral wrap extending axially from one side of the end plate, with the wraps of the scroll members meshing with ... | 04/01/1986 |
| 4422836 | Rotary machine with peripherally contacting rotors and end face sealing plate A rotary machine has a plurality of rotors rolling over one another and defining therebetween and end covers at least one working chamber, and at least one sealing plate at at least one side of the rotors and arranged so that an opposite side of the seali... | 12/27/1983 |
| 4385874 | Rotary pump apparatus with plural abutting pumping segments A rotary pump apparatus with plural abutting pumping segments has a wafer-like housing with an inner elliptical pumping chamber with intake and discharge ports for a fluid flow. A plurality of identical fluid moving cylindrical segments are movably dispos... | 05/31/1983 |
| 4300875 | Positive displacement machine with elastic suspension In a displacement machine operating according to the spiral principle and having two displacement elements presenting respective axially interengaging sprial-shaped walls, and drive means connected between the elements to produce a relative translatory ci... | 11/17/1981 |
| 4059370 | Rotary engine having low thermal conductivity rotor A rotary engine having a high surface to volume ratio including a housing having intake and exhaust ports and defining a chamber, a shaft journalled in the housing to extend therethrough and having an eccentric within the chamber, and a rotor on the eccen... | 11/22/1977 |
| 4028021 | Rotary trochoidal compressor with compressible sealing A rotary trochoidal compressor comprising a rotor mounted for planetary motion within a housing and in which the peripheral surface of the compressor rotor is substantially a hypotrochoid and the peripheral inner surface of the housing is the outer envelo... | 06/07/1977 |
| 3986799 | Fluid-cooled, scroll-type, positive fluid displacement apparatus Cooling means are provided for the stationary and orbiting scroll members of scroll-type apparatus. These cooling means comprise fluid coolant channels in the end plates and in the involute wraps of the scroll members and means to circulate a fluid coolan... | 10/19/1976 |
