Rotary expansible chamber devices inventions 09/07

20070224066 - Variable displacement vane pump: A variable displacement vane pump has a pump body, a driving shaft rotatably supported by the pump body, a rotor rotatably driven by the driving shaft, a plurality of vanes radially extendably installed in respective slots arranged in a circumferential direction in the rotor, a cam ring rockably provided inside... Agent: Foley And Lardner LLP Suite 500

20070224069 - Scroll fluid machine: In a scroll fluid machine, a driving shaft has an eccentric axial portion around which an orbiting scroll revolves while the orbiting scroll engages with a fixed scroll. A cooling path extends through the driving shaft to a gap between the outer circumferential surface of the eccentric axial portion and... Agent: Lowrie, Lando & Anastasi

20070224072 - Scroll fluid machine: A scroll fluid machine comprises a fixed scroll and an orbiting scroll that engages with the fixed scroll to form a compression chamber between the fixed and orbiting scrolls. Near the outer circumference of the fixed and/or orbiting scroll, an annular dust-seal groove is provided. In the groove, a dust... Agent: Joel D. Skinner, Jr. Skinner And Associates

20070224064 - Pump apparatus and methods for using same: A pump apparatus for transporting at least one fluid, comprising a shaft, wherein the shaft has a longitudinal axis; a motor, wherein the motor is adapted to rotate the shaft about the longitudinal axis; and, a plurality of gerotors, wherein the gerotors are attached to the shaft along the longitudinal... Agent: Wolf, Block, Schorr & Solis-cohen LLP

20070224065 - Coat pump assembly: A roots blower pump (10) has its internal gaps between relatively moving parts reduced by adding a liquid coating to the intake of the pump while operating the pump. The liquid coating cures to a solid surface on the moving parts, presenting opposing relatively moving surfaces that mate with one... Agent: Barnes & Thornburg LLP

20070224067 - Variable displacement sliding vane pump: A variable displacement sliding vane pump comprising a pump body, inlet and outlet ports formed in said pump body, a drive shaft rotatably mounted in said pump body, a rotor driven by said drive shaft and co-axially aligned therewith, a plurality of radially extending vanes slidably disposed in said rotor,... Agent: Jeffrey Thurnau The Gates Corporation

20070224068 - Ductile cast iron scroll compressor: A scroll compressor includes a scroll member having a base and a generally spiral wrap that extends from the base to define a portion of a compression chamber. The scroll member is made of a cast iron material comprising a microstructure having graphite nodules.... Agent: Carlson, Gaskey & Olds, P.C.

20070224070 - Scroll compressor with stop structure to prevent slider block movement: A scroll compressor has a stop on its eccentric pin to selectively engage a notch in a slider block, and prevent the slider block from moving upwardly and contacting a rear surface of the orbiting scroll. The present invention prevents this unwanted contact, and the resultant wear.... Agent: Carlson, Gaskey & Olds, P.C.

20070224071 - Scroll machine using floating seal with backer: A floating seal has a lower plate, an upper plate and a pair of seals disposed between the two plates. The lower plate, the upper plate or both plates include a backer which projects outward from the plate to engage one or both of the seals to support the seal... Agent: Harness, Dickey & Pierce, P.L.C

20070224073 - Rotary fluid machine: A rotary fluid machine includes an eccentric rotary piston mechanism that is configured such that an annular piston is accommodated in an annular cylinder chamber of a cylinder to form an outer cylinder chamber and an inner cylinder chamber. The cylinder and the annular piston relatively execute eccentric rotary motion.... Agent: GlobalIPCounselors, LLP

20070217935 - Positive-displacement fluid machine: The present invention is a fluid machine constituted so as to close moving spaces communicating with an intake opening by at least one pair of members, move them to a discharge opening and discharge fluid sucked from said intake opening from said discharge opening, wherein said members are arranged so... Agent: Wenderoth, Lind & Ponack, L.L.P.

20070217934 - Scroll compressor: A scroll compressor prevents the rotation of an orbiting scroll and reduces manufacturing cost. This scroll compressor has a housing, a fixed scroll having a first end plate and a first spiral wall body, an orbiting scroll having a second end plate and a second spiral wall body, rotation-preventing portions... Agent: Kanesaka Berner And Partners LLP

20070217936 - Scroll compressor: A scroll compressor including an oil separator is provided. The oil separator may be provided with a rotor or a shaft of a driving motor of the compressor so that refrigerant gas and oil discharged from a compression chamber may be separated by a centrifugal force. The oil separator may... Agent: Ked & Associates, LLP

20070217937 - Vane rotary type air pump: In the vane rotary type air pump in which a cylinder 103, a rotor 110 and a vane 112 are sandwiched between a front plate (not shown) and a rear plate (not shown), an opened end 111b of the vane groove 111 is provided in a reversed rotation direction region... Agent: Kratz, Quintos & Hanson, LLP

20070217938 - Scroll compressor with bypass apparatus: A bypass apparatus for a scroll compressor includes multiple bypass holes located at a plurality of locations along a path traced by the compression chambers of the compressor. A dimple portion having a large cross sectional area may be formed at an outlet of the bypass holes to increase the... Agent: Ked & Associates, LLP

20070217939 - Gas-compression module for a fuel cell: A gas-compression module for use in a fuel cell system includes an air compressor, a motor and an intercooler. The air compressor has a pump chamber for compressing gas. The motor has a drive shaft for driving the air compressor. The intercooler cools the compressed gas exhausted from the air... Agent: Knoble Yoshida & Dunleavy LLC Eight Penn Center

20070217940 - Pneumatic tool with pressure-stabilizing cylinder: A pneumatic tool includes a shell, a cylinder positioned in the shell, a rotor eccentrically positioned in the cylinder for rotation and a shaft connected to the rotor and inserted from the interior to the exterior of the shell. The cylinder defines a space for receiving the rotor, a first... Agent: Kamrath & Associates P.A.

20070212243 - Variable displacement vane pump and method of controlling the same: A variable displacement vane pump includes: a cam ring defining first and second fluid pressure chambers on both sides thereof; and a rotor mounted inside the cam ring, the rotor defining an annular chamber outside thereof. Arranged outside of the rotor, vanes divide the annular chamber into a plurality of... Agent: Foley And Lardner LLP Suite 500

20070212245 - Scroll fluid machine: A scroll fluid machine comprises a fixed scroll, an orbiting scroll and a self-rotation-preventing device for preventing the orbiting scroll from rotating on its own axis. The self-rotation-preventing device comprises a bearing in a support hole of the orbiting scroll, a crank pin which connects the orbiting scroll to the... Agent: Davis & Bujold, P.l.l.c.

20070212246 - Scroll compressor: A scroll compressor is provided. The scroll compressor includes a fixed scroll and an orbiting scroll, each with a wrap extending from a plate. The wrap or the plate may have different heights so as to prevent a gap from forming between the end of one of the wraps and... Agent: Ked & Associates, LLP

20070212244 - Scroll compressor: A scroll compressor in which a scroll fixed lap rising from a fixed plate of a fixed scroll and a scroll orbiting lap rising from an orbiting plate of an orbiting scroll are combined with each other to form compression chambers therebetween, the fixed scroll is made of iron-based material,... Agent: Kratz, Quintos & Hanson, LLP

20070212247 - Method of generation of surgeless flow of the working fluid and a device for its implementation: The invention refers to mechanical engineering and can be used for reducing the level of vibrations and noise caused by pulsations of the fluid flow generated by a rotor sliding-vane machine. A method of generating a surgeless fluid flow by rotating the rotor of the rotor sliding-vane machine, separating the... Agent: Walker & Jocke, L.p.a.

20070207047 - Tip seal in a scroll fluid machine: A scroll fluid machine comprises an orbiting scroll and a fixed scroll. The orbiting scroll has an orbiting wrap and the fixed scroll has a fixed wrap. An engagement groove is formed at the end of the orbiting or fixed wrap. A tip seal engages in the engagement groove and... Agent: Joel D. Skinner, Jr. Skinner And Associates

20070207048 - Rotor sliding-vane machine: The invention refers to mechanical engineering and can be used as a high pressure rotor sliding-vane machine with surgeless delivery capable to work both as a pump and as a hydro motor. The objective of the present invention is to overcome the origins generating the high dissipative losses of power... Agent: Walker & Jocke, L.p.a.

20070207049 - Twin-plate rotary compressor: A rotary, twin-plate compressor has two conical plates (100, 200) rotating relative to each other about respective rotation axes (102, 202) within a casing. There is line contact (90) between the two conical surfaces (120, 220) of the plates (100, 200). The rotation axes (102, 202) are offset at an... Agent: Knobbe Martens Olson & Bear LLP

20070207050 - Screw vacuum pump: A screw vacuum pump includes a gas working chamber formed by a male screw rotor and a female screw rotor respectively including unequal lead screws engaging each other and having a lead angle that continuously changes with the advance of helix and a stator receiving therein both rotors. The stator... Agent: Foley And Lardner LLP Suite 500

20070207051 - Toothed member and a corresponding locus: The locus of a gearing contact points called an action curve (A) is embodied in the form of a lemniscate (Lg, Ld) having a double point coinciding with the rolling point (T) of two pitch circles (Prg, Prd). The gearing contact is carried out at the top point (Sgh) of... Agent: Young & Thompson