Rotary expansible chamber devices inventions 11/08

20080292484 - Compressor and device for reducing vibration therefor: A compressor and device for reducing vibration therefor is provided herein. The compressor includes a compression device having a compression chamber, and configured to receive, compress, and output a refrigerant, a drive motor configured to rotate the compression device to compress a refrigerant within the compression chamber, and a torsional... Agent: Ked & Associates, LLP

20080292485 - Multistage compression type rotary compressor: An object is to provide a high inner pressure type multistage compression rotary compressor capable of avoiding beforehand generation of vane fly of a second rotary compression element and realizing a stabilized operation, the rotary compressor includes a communication path which connects an intermediate pressure region to a region having... Agent: Kratz, Quintos & Hanson, LLP

20080292486 - Rotary blower with corrosion-resistant abradable coating: A rotary blower rotor includes a rotor body having a corrosion-resistant coating covering the rotor body. An abradable coating covers at least a portion of the corrosion-resistant coating for providing an essentially zero operating clearance for increasing a volumetric efficiency of the rotary blower. A rotary blower including a rotor... Agent: Eaton Corporation Eaton Center

20080292487 - Tapered rotor assemblies for a supercharger: A rotor assembly is provided for a compressor assembly having a housing defining an inlet port, outlet port, and a rotor cavity in communication with the inlet port and outlet port. The rotor assembly includes a rotor body having a plurality of lobes formed thereon and rotatably mountable within the... Agent: General Motors Corporation Legal Staff

20080286137 - Multistage compression type rotary compressor: An object is to provide a high inner pressure type multistage compression rotary compressor capable of avoiding beforehand generation of vane fly of a second rotary compression element and realizing a stabilized operation, the rotary compressor includes a communication path which connects an intermediate pressure region to a region having... Agent: Kratz, Quintos & Hanson, LLP

20080286138 - Helical screw compressor comprising a cooling jacket: The invention relates to the rotor housing (1) of a helical screw compressor which is surrounded by a cooling housing (21, 23, 25) which forms a cooling chamber (27) which surrounds the rotor housing (1) in an annular-shaped manner, said cooling chamber being intercepted on a point by a separating... Agent: Michael Best & Friedrich LLP

20080279708 - Screw compressor with oil feed system: A rotary screw compressor with an oil feed system that has a plurality of oil orifice nozzles to feed oil to the compressor rotors and the compressor bearings. One of the oil orifice nozzles is generally always provided with a regulated flow of oil. At least one and preferably two... Agent: Husch Blackwell Sanders, LLP Welsh & Katz

20080279709 - Driven vane compressor: A rotary vane device comprising a rotor and a vane positioned in a pumping chamber in a housing for rotation about respective eccentric axes, wherein the rotor has a rotor slot in which the vane is positioned, characterized by the vane being driven and the rotor following the vane.... Agent: Don W. Bulson (park) Renner, Otto, Boisselle & Sklar, LLP

20080273998 - Fluid machine: In a spiral wrap of at least a movable scroll, grooves are formed at given intervals to extend from a halfway point of a top face of the spiral wrap through the lateral face of the spiral wrap, substantially perpendicular to the lateral face of the spiral wrap in a... Agent: Cohen Pontani Lieberman & Pavane LLP

20080273999 - Machine for compressing gasses and refrigerant vapors: A machine for compressing gases and vapors includes a housing base containing an internal raceway, a spinning rotor containing a plurality of hollow cylinders, a plurality of spherical balls serving as positive displacement pistons which roll atop a housing base raceway and which reciprocate within the rotor cylinders, a static... Agent: John D. Jude

20080274000 - Pump, especially slurry pump: The aim of the invention is to provide a simple, smoothly running pump, especially a slurry pump, preferably for concrete, which comprises a driven rotor (4) rotating inside a housing (2). According to the invention, the rotor (4) is configured as a polygonal, prismatic body wherein at least the connecting... Agent: Knobbe Martens Olson & Bear LLP

20080274001 - Rotary expander: The upper and lower end surfaces (67b, 67c) of a rotary piston (67) are formed with annular seal grooves (91) extending along the annular end surfaces (67b, 67c), and an annular lip seal (92) is fitted in each of the seal grooves (91). Thereby, the lubricating oil fed from oil... Agent: Birch Stewart Kolasch & Birch