Rotary expansible chamber devices inventions 04/08

20080095652 - Roudong volume variation method for fluid machinery and its mechanisms and applications: The invention relates to a roudong volume variation method for fluid machinery and its mechanisms and applications, which is suitable to be used in internal combustion engine, pump, compressor, motor, transmission, refrigeration, metering, etc. In the roudong volume variation method, a roudong volume variation motion can be produced by the... Agent: Alston & Bird LLP

20080095653 - Compressor slide valve lubrication: A compressor (20) has an unloading slide valve (100). The valve has a valve element (102) having a range between a first condition and a second condition, the second condition being unloaded relative to the first condition. A first surface (200) of the valve element (102) is in sliding engagement... Agent: Bachman & Lapointe, P.C. (utc)

20080085203 - Progressing cavity pump with wobble stator and magnetic drive: A progressing cavity pump including a drive component configured to be rotated by a motor and a driven component that is magnetically rotationally coupled to the drive component. The driven component is fluidly isolated from the drive component. The pump further includes a wobble stator and a rotor positioned inside... Agent: Thompson Hine L.l.p. Intellectual Property Group

20080085204 - Scroll compressor with titanium oldham coupling: A scroll compressor includes an Oldham coupling which prevents the orbiting scroll member from rotating when driven by a rotating shaft. The Oldham coupling is formed of titanium or titanium alloy, thus increasing the strength of the Oldham coupling while minimizing its weight. Reduced coupling weight minimizes unnecessary scroll compressor... Agent: Carlson, Gaskey & Olds, P.c.

20080085205 - Compressor: A compressor includes a first muffler chamber communicating with a first cylinder chamber, and a second muffler chamber communicating with a second cylinder chamber. The first muffler chamber and the second muffler chamber are communicated with each other by a gas passage. The gas passage is communicated with a Helmholtz... Agent: Global Ip Counselors, LLP

20080085206 - Fluid machine: Oil supply grooves (74, 84) are formed respectively in a rotating shaft (70) of a compression mechanism (50) integral with an electric motor (40) and in a rotating shaft (80) of an expansion mechanism (60). The rotating shafts (70, 80) are coupled together by engagement between an engagement convex portion... Agent: Birch Stewart Kolasch & Birch

20080085207 - Oil-flooded screw compressor with axial-thrust balancing device: In an arrangement on an oil-flooded screw compressor with two rotors, a male rotor having essentially convex lobe flanks and a female rotor having essentially concave flank portions, with the male rotor having a drive-shaft end and an oil-pressure loaded balancing piston supplied with oil via a pressure line, both... Agent: Horst M. Kasper

20080085208 - Oil pump rotor assembly: A rotor pump assembly is disclosed which reduces noise emitted from an oil pump while preventing pumping performance and mechanical efficiency thereof from being decreased by properly forming the profiles of teeth of an inner rotor and an outer rotor which are engageable with each other. The tooth profile of... Agent: Darby & Darby P.c.

20080080996 - Screw rotor: The present invention is to provide a screw rotor including a resin rotor formed around a metallic shaft without generation of cracks. Spiral chamfers are formed on surfaces of metallic shafts around which resin rotors are formed. Preferably the surfaces of the shafts may be sandblasted, and after the surfaces... Agent: Reed Smith LLP

20080080997 - Screw compressor: A screw compressor rotatably accommodates, within a casing 20 including a suction port and a delivery port 3, a pair of female and male rotors 1, 2 under the meshed state and compresses gas in the state where a liquid is mixed by pouring the liquid to the gas confined... Agent: Antonelli, Terry, Stout & Kraus, LLP