Expansible chamber devices inventions 02/07

20070039459 - Swash plate compressor: A first swash plate 18 is coupled to a drive shaft 16 to be rotatable integrally with the drive shaft 16. Single head pistons 23 are coupled to the first swash plate 18 via shoes 25A, 25B. Rotation of the drive shaft 16 rotates the first swash plate 18, which... Agent: Morgan & Finnegan, L.L.P.

20070039460 - One-piece piston for an internal combustion engine: The invention relates to a one-piece piston (1) for an internal combustion engine comprising an annular cooling channel (6) which is arranged in the edge area of the piston head (4) and closed by a substantially cylindrical embodied in one-piece ring (18).... Agent: William Collard Collard & Roe, P.C.

20070039461 - Ellipsoid roller bearing piston ring: An improved piston ring suitable for use in an internal combustion engine is disclosed comprising a plurality of races sized to receive elongate rollers disposed around the circumference thereof. The elongate rollers may be shaped as a prolate ellipsoid or other rounded shape. The piston ring may seat within a... Agent: Black Lowe & Graham, PLLC

20070034079 - Packing assembly for cylinder casing: A packing assembly for a cylinder is clamped between two parts of a casing of a cylinder between which a piston is received. The piston has a shaft which extends out from the casing of the cylinder. The packing assembly includes two seal frames connected to the two parts and... Agent: Nikolai & Mersereau, P.A.

20070034078 - Packing having seal tongue: A cylinder packing is clamped between two parts of a casing of a cylinder and a piston is received between the two parts. The piston has a shaft which extends out from the casing of the cylinder. The packing includes a seal portion extending from an inner periphery thereof and... Agent: Nikolai & Mersereau, P.A.

20070028763 - Hermetic compressor: A hermetic compressor capable of appropriately injecting oil from an eccentric unit of a rotating shaft in accordance with amounts required by respective regions. The hermetic compressor comprises a compression chamber in which a refrigerant is compressed, a piston to compress the refrigerant in the compression chamber, a rotating shaft... Agent: Blank Rome LLP

20070022872 - Hybrid nutating pump: A nutating pump has a cross-type universal joint connecting a nutating member to a pump housing, ball joints connecting the nutating member to piston rods, and the piston rods fixed to piston heads so that the piston heads wobble in pump cylinders.... Agent: Barnes & Thornburg LLP

20070022873 - Wear-resistant port plate for a fluid transfer device and fluid transfer device including same: In a fluid transfer device (10) that includes a housing (12), a rotor (16) rotatably mounted in the housing (12) and having a bore (24) and at least one piston (30) slidingly mounted in the bore (24), a port plate (42) that includes a body portion (44) mountable in the... Agent: Larry Palguta, Esq. Honeywell International, Inc.

20070022874 - Plunger with annular exterior seals and method of installing annular seals on an exterior surface of a plunger: A method of installing annular seals on a plunger. A first step involves positioning an annular seal on a seal installation tool adapted to hold the annular seal in an expanded state. A second step involves positioning the annular seal so that the annular seal overlies a body of a... Agent: Davis & Bujold, P.l.l.c.

20070022875 - Divided-typed piston structure having groove for assembling a rider ring in air compressor: A divided-type piston of an air compressor, in which a piston rod shaft is inserted into a center portion thereof and reciprocally moves within a cylinder, has a piston body. The piston body is divided into an upper piston, an intermediate piston and a lower piston, and these pistons are... Agent: Cantor Colburn, LLP