Rotary expansible chamber devices inventions 02/07

20070041859 - Rotary fluid-driven motor with sealing elements: A static-fluid-pressure-driven rotary motor includes a casing, which defines a chamber having a fluid inlet and a fluid outlet, and at least one rotor assembly rotatably mounted within the casing. The rotor assembly includes a rotor, a plurality of barrier elements associated with, and extending outwards from, the rotor, and... Agent: Mark Friedman Bill Polkinghorn

20070041860 - Rotary vane air pump: At least one of a cylinder (6), a rotor (8), a front plate (14), and a rear plate (16), all of which form compression chambers (18), is made of a metal, and a surface treatment is conducted on a portion of such at least one of those members.... Agent: Wenderoth, Lind & Ponack L.L.P.

20070041861 - Screw rotor and vacuum pump: The invention provides a low-cost screw rotor that is capable of compressing gas. As exemplified in FIG. 4, screw rotors (26, 27) comprise: upstream screw section (43a) defined on the upstream side of the gas travel path with screw thread (41a) identically positioned at the same interval, and downstream screw... Agent: Trask Britt

20070036666 - Rotary fluid machine: A rotary fluid machine is provided with a cylinder having an annular cylinder chamber, an annular piston and a blade that form a rotation mechanism. The piston is disposed in the cylinder chamber to be eccentric to the cylinder and divides the cylinder chamber into an outer working chamber and... Agent: GlobalIPCounselors, LLP

20070036667 - Rotary piston heat engine system: A rotary piston heat engine system (100), composed of two units (I, II) each comprising two pistons (1, 2) mounted for movement in opposite directions, the pistons being each mounted for rotation in a cylinder (3, 3′), wherein the longitudinal axes (4, 4′) of the pistons (2, 2′) and cylinder... Agent: William Collard Collard & Roe, P.C.

20070036668 - Scroll compressor discharge port improvements: A scroll compressor is provided with a recess to increase the flow area through which compression chambers communicate with a discharge port. The scroll compressor is of the sort having a wrap with a swing radius that is always equal to or greater than zero. That is, this invention does... Agent: Carlson, Gaskey & Olds, P.C.

20070031275 - Fluid machine: In a scroll compressor, a thrust ring is mounted between a movable-side flat plate part of a movable scroll and a housing. An upper surface of the thrust ring slides relative to a lower surface of the movable-side flat plate part and supports a thrust load from the movable scroll.... Agent: GlobalIPCounselors, LLP

20070031276 - Rotary compressor: A sealing ring is provided between an end plate of an eccentric rotation body and a support plate so that a pressure of fluid at high pressure is allowed to work on the end plate, thereby allowing an axial-direction pressing force to work on the end plate. The sealing ring... Agent: GlobalIPCounselors, LLP

20070031277 - Controlled-clearance sealing compressor devices: A controlled-clearance sealing compressor device that provides precision rotor centering directly with respect to the stator housing, vane centering with respect to rotor (not the stator) and the dynamic balance design of the gliders required for practical single and dual vane devices. The devices uses roller bearings to control the... Agent: Law Offices Of Brian S Steinberger

20070031278 - Reversible valving system for use in pumps and compressing devices: A valving system for reversing flow in a compressing device. The reversible compressor includes a reversible drive motor for reversing a rotational direction of a rotor, a first and second port located in a left and right side of a stator, respectively, and a first and second manifold located on... Agent: Law Offices Of Brian S Steinberger

20070025870 - Eccentric pump, and use thereof: Disclosed is an eccentric pump comprising an interior rotor (2) that is connected in a torsion-proof manner to an eccentric rotor (3) located in a housing (1) via a locking member (14). Said locking member (14) separates an area that is connected to an inlet duct (8) from an area... Agent: Mayer, Brown, Rowe & Maw LLP