Rotary expansible chamber devices inventions 03/08

20080069713 - Scroll compressor with discharge valve: A scroll compressor utilizes scroll wrap profiles which are designed with a rapid compression scroll wrap profile. This profile utilizes a shorter wrap and lower vane aspect ratios during the compression process. The non-orbiting scroll member is integrated with the main bearing housing. The drive shaft extends through the main... Agent: Harness, Dickey & Pierce, P.L.C

20080069714 - Compressor having counter-weight cup: A cup-shaped shield surrounds a counter weight on the lower end of a rotor of the refrigeration compressor. The shield advantageously restricts lubricant flow to the rotating lower end of the rotor whereby power consumption of the motor is reduced. The shield may be axially and/or rotationally limited by engagement... Agent: Harness, Dickey & Pierce, P.L.C

20080069715 - Process for hardfacing a progressing cavity pump/motor rotor: A method of hardfacing a metal body, including the steps of flame spraying a metallic material onto a surface of the metal body to produce a layer of the metallic material on the metal body and fusing the layer of metallic material to provide a hardfacing layer, is improved by... Agent: Dennis R. Haszko Patent Law Office Of D.r.haszko

20080063552 - Single-vane rotary pump or motor: A rotary vane pump or motor comprising a housing (16) with cylindrical inner peripheral wall defining a cavity, and a rotor (20) with cylindrical peripheral surface and a socket (41) internal to said peripheral surface, eccentrically disposed in the cavity. The rotor (20) is adapted to scroll the inner peripheral... Agent: Nath & Associates

20080063553 - Flanged sleeve guide: A scroll machine includes a shell and a pair of scroll members. At least one of the scroll members disposed in the shell is mounted for axial movement with respect to the other scroll member disposed in the scroll. The amount of axial movement of at least one scroll member... Agent: Harness, Dickey & Pierce, P.L.C

20080063554 - Precision flow gear pump: A positive displacement gear pump including a pump housing having an inlet port, an outlet portion, and first and second pumping chambers. A first gear having helical teeth is engaged with an inner surface of the first pumping chamber. A second gear with helical teeth is engaged with an inner... Agent: Faegre & Benson LLP Patent Docketing

20080056923 - Rotary compressor: A rotary compressor including a cylinder to form a compression chamber, and including a vane slot including a vane guide part recessed outward from an inner surface of the compression chamber and an extended part having a width wider than the width of the vane guide part by a predetermined... Agent: Stanzione & Kim, LLP

20080056924 - Volumetric efficiency in a charge cooled or air cooled wankel rotary engine: An improved Wankel-type rotary engine having a one piece manufactured side sealing system to improve engine oil leakage and combustion chamber lubrication leakage over the entire seal. The rotor of the Wankel-type rotary engine acts like an internal supercharger thereby improving the power output of the engine. An electronic circuit... Agent: Emch, Schaffer, Schaub & Porcello Co

20080056925 - Vane room unit and rotary compressor having the same: A rotary compressor includes a cylinder main body to define an inner space, a vane coupled to the cylinder main body to extend into and out of the inner space, the cylinder main body including a vane room formed at a side of the cylinder main body to guide entrance... Agent: Stanzione & Kim, LLP

20080056926 - Gear pump: A three-gear type gear pump or double gear pump wherein the first driven gear and the second driven gear are opposed to one another with the driving gear disposed between them, wherein the number of teeth of the driving gear is greater than the number of teeth of each of... Agent: Ostrolenk Faber Gerb & Soffen

20080056927 - Pump: In a pump with a housing composed of two intersecting cylinder sections, having provided on mutually opposite sides inlet and outlet ports and having in each cylinder section a rotor rotatably disposed about its center longitudinal axis, the major transverse axes of the rotors being positioned approximately perpendicular to each... Agent: Browdy And Neimark, P.l.l.c. 624 Ninth Street, Nw