Rotary expansible chamber devices inventions 06/08

20080152524 - Oil supply method of two-stage screw compressor, two-stage screw compressor applying the method, and method of operating refrigerating machine having the compressor: A method of supplying lubrication oil to a two-stage screw compressor is disclosed in which a low-pressure stage screw compressor and a high-pressure stage screw compressor are integrally constructed. A compression space is formed by a male rotor and a female rotor, and operation gas is fed for compression to... Agent: Rossi, Kimms & Mcdowell LLP.

20080152525 - Scroll fluid machine: A scroll fluid machine comprises a body having a driving shaft, an electric motor coupled to the driving shaft, and a blower. The blower cools the body, a connection between the body and motor, and the electric motor by wind from the blower.... Agent: Zarley Law Firm P.L.C

20080152526 - Vapor injection system for a scroll compressor: A compressor may include a shell, a compression mechanism, a motor, and a vapor injection system. The compression mechanism may be contained within in the shell and include a non-orbiting scroll axially displaceably mounted to the shell. The non-orbiting scroll may have an exterior portion, an interior portion, and a... Agent: Harness, Dickey & Pierce, P.L.C

20080152527 - Fixed scroll positioning apparatus and fixed scroll positioning method: In a positioning apparatus (40), a fixed scroll (34) is positioned with respect to an assembly body (11) in which a compressor motor (25) has been incorporated. In positioning the fixed scroll (34), electric power is supplied to the compressor motor (25) from an inverter (81) to rotate a crank... Agent: Birch Stewart Kolasch & Birch

20080152528 - Scroll fluid machine: A scroll fluid machine comprises a driving shaft in a housing. An orbiting scroll is eccentrically revolved around an eccentric axial portion of the driving shaft via a bearing. Air is introduced from outside through an intake port of a circumferential wall of the housing and directed toward the bearing... Agent: Fennemore Craig, P.c.

20080152529 - Bearing and liquid cooling type screw compressor: A groove is provided in the periphery of a pressure receiving area of a pressure receiving surface opposing to the load of axis weight within a bearing surface supporting an axis, and a liquid supply route communicating with the groove is provided so that liquid is supplied to the groove... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.c.

20080145252 - Rotary compressor and air conditioner having the same: A rotary compressor is provided which uses a synchronous reluctance motor to provide a driving force. The motor includes a rotor and a stator, each formed by a respective plurality of laminated steel plates. A plurality of magnetic flux barriers are formed on the steel plates which form the rotor,... Agent: Ked & Associates, LLP

20080145253 - Scroll fluid machine: A fixed scroll (60) is provided with a pin shaft portion (70) which is formed in a cylindrical shape. Formed in a movable scroll (50) is a slide groove (80) which extends in the radial direction of the movable scroll (50). The pin shaft portion (70) of the fixed scroll... Agent: Birch Stewart Kolasch & Birch

20080145254 - Shaft seal device: It is intended to irrespective of any special fluid sealed, prevent wearing of a seal surface of shaft sealing device. Further, it is intended to lower machining accuracy of slide surface of rotary shaft and to prevent any damages of seal surface by contact with other parts. There is provided... Agent: Arent Fox LLP

20080145255 - Hydraulic pump for vehicle: A hydraulic pump for a vehicle includes: a block; a pulley receiving an engine torque and rotating; a pump housing attached to the block; an outer rotor mounted in the pump housing; an inner rotor mounted inside the outer rotor, with gear teeth at an interior surface thereof; a pinion... Agent: Morgan, Lewis & Bockius LLP (sf)

20080145256 - Hermetic rotary compressor: A hermetic rotary compressor operates two cylinders simultaneously in the regular operation; however it halts operating one of the cylinders when it selects an operation with a half capacity. A vane room of the halted cylinder is air-tightly sealed with respect to lubricant atmosphere in a hermetic case. An oil-supplying... Agent: Ratnerprestia

20080145257 - Lubricant-tight vane rotary vacuum pump: A lubricant-tight vane rotary vacuum pump, includes a pump stage (17) having a pump stage housing (10) with a gas inlet, compression chamber (11), and a gas outlet (51), a channel (50) connecting the compression chamber (11) with the gas outlet (51), and a groove (54) at least partially surrounding... Agent: Abelman, Frayne & Schwab

20080145258 - Vacuum pump with a fan: A vacuum pump for producing low or high vacuum includes a housing (1′) having an inlet (9) and an outlet (9), a pumping system (30) for compressing gas, a motor (25, 26) for driving the pumping system (30), and a fan (6) for cooling the pump and having its own... Agent: Abelman, Frayne & Schwab

20080145259 - Oil pump and method of assembling the oil pump: An oil pump including a first housing having a rotation shaft insertion hole, a cam ring, a pump element, a rotation shaft rotatably extending through the rotation shaft insertion hole, a second housing disposed on the cam ring, wherein the cam ring is placed in a position relative to the... Agent: Crowell & Moring LLP Intellectual Property Group

20080145260 - Vane pump with moveable sleeve: A vane pump including a movable sleeve disposed between the casing and the rotor vanes in which axial and angular movement of the sleeve enables control of the fluid flow.... Agent: Kleinberg & Lerner, LLP

20080138226 - Scroll fluid machine: A scroll compressor as a fluid machine includes a housing containing a scroll unit and an armature of an electric motor, and a connection device (66) for electrically connecting each stator coil (62) of the armature to a circuit board external to the housing. The connection device (66) includes a... Agent: Cohen, Pontani, Lieberman & Pavane

20080138227 - Scroll compressor with capacity modulation: A scroll compressor may include a shell, a compression mechanism, and a sealing apparatus. The compression mechanism may be contained within the shell and include a compression member. The compression member may include an aperture extending radially there a surface. The sealing apparatus may be contained within the shell and... Agent: Harness, Dickey & Pierce, P.L.C

20080138228 - Scroll-type fluid machine: In a scroll-type fluid machine (4), a refrigerant in a discharge chamber (80) is adjusted at prescribed discharge pressure by using a discharge valve (84), discharged from a scroll unit (52), and supplied to a refrigeration circuit (2), and the machine has a circulation path (7) for introducing the refrigerant... Agent: Cohen, Pontani, Lieberman & Pavane

20080138229 - Steam driven engine: An engine includes a piston and a stator housing. The stator housing includes a channel in which the piston is disposed, an input port that is adapted to receive a working fluid into the channel, and an output port that is adapted to exhaust the working fluid from the channel.... Agent: Ip Strategies

20080138230 - Pressure sealed tapered screw pump/motor: A fluid pump (10) or motor (100) includes a pair of enmeshed tapered rotors (22,24,122,124) having intersecting axes of rotation. The first rotor (22,122) includes a small low pressure end (34,54,134,154) and a larger high pressure end (32,52,132,152) and a spiral thread (36,56,136,156) that increases in width and depth as... Agent: Synnestvedt Lechner & Woodbridge LLP

20080131301 - Screw compressor lubrication: A screw compressor (20) has compressor lubrication network having a lubricant outlet port (242) along a low pressure cusp (244). An unloading slide valve element (102) may be along a high pressure cusp (105).... Agent: Bachman & Lapointe, P.c. (utc)

20080131302 - Oil-free fluid machine having two or more rotors: An oil-free fluid machine unit is provided of which the fluid machine has two or more rotors and torque transmission between the rotors can be performed without a need of using lubrication oil thereby eliminating contamination induced by lubrication oil and without reduction of longevity of the synchronizing gears. The... Agent: Rossi, Kimms & Mcdowell LLP.

20080131303 - Compressor terminal plate: A compressor (20) has a housing (22) having first (52) and second (48) members. A motor (24) within the housing (22) is coupled to one or more working elements (26, 28) to drive the one or more working elements (26, 28) to compress a fluid. A number of electrical terminals... Agent: Bachman & Lapointe, P.c. (utc)