Rotary expansible chamber devices inventions 11/07

20070274851 - Rotary piston machine: The invention provides a twin-shaft, dry-running rotary piston machine (1) comprising two rotary pistons (8) supported in a housing (2) via shafts (4) and roller bearings (6) with rolling elements, said rotary pistons are horizontally arranged and mesh with each other in opposite directions, so as to define a conveying... Agent: Wolf Greenfield & Sacks, P.C.

20070274852 - Volumetric screw compressor provided with delivery adjustment device: A volumetric compressor comprising: a casing provided with a suction chamber and a delivery chamber, between which a pair of screw rotors is included; a pan containing oil, and a delivery adjustment unit equipped with a slide valve, cooperating with the rotors and with a fluid-operated actuator, in which it... Agent: Ip Strategies

20070274853 - Gear tooth and external gear pump: A gear tooth including a concave base connected to its starting point at the root of the adjacent tooth and a top connected to the base via a first transition point. The top of the tooth includes two convex segments connected via a second transition point causing a curve break... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20070269327 - Constant pressure type and fully enclosed scroll compressor for vehicle: Aiming at settling the problem of unstable pressure for the existing vehicle scroll compressor and the problem of being unable to create electric automobile air conditioner compressors after appropriate alteration, this invention offers a new type that delivers constant pressure and a fully enclosed scroll compressor. It includes a static... Agent: GlobalIPServices

20070269325 - Modular volumetric compressor: A volumetric compressor of the type comprising a pair of rotors cooperating with each other and housed inside a compressor body, in which it is possible to identify a first flange, arranged on the suction side of the compressor body, and a second flange, arranged on the delivery side of... Agent: Ip Strategies

20070269326 - Dual volume-ratio scroll machine: A compressor may include a shell, first and second scroll members, and a first annular seal. The first scroll member may be supported within the shell and may include a first end plate having a first spiral wrap extending from a first surface thereof and a second surface having an... Agent: Harness, Dickey & Pierce, P.L.C

20070269328 - Antennas array calibration arrangement and method: A compressor comprising a hermetical container, a compression mechanism disposed in a lower portion in the hermetical container, a rotational motor disposed in an upper portion in the hermetical container and having a stator and a rotor, coil ends provided on upper end lower ends of the stator, a discharge... Agent: Kratz, Quintos & Hanson, LLP

20070264144 - Extruder system with integrated gear pump: An extruder system includes an extruder for axially extruding a rubber or plastic material in a barrel by rotation of an extrusion screw arranged in the barrel, and a gear pump driven by a rotational force for rotating the extrusion screw so that a predetermined amount of the extruded material... Agent: Oliff & Berridge, PLC

20070264145 - Single-stage liquid-ring vacuum pump having double axial inlet: A single-stage liquid-ring vacuum pump having a double axial inlet with flat-distribution plates comprises a central body (2), an impeller (5) eccentrically housed in a chamber (4) delimited by the central body (2), a flanged suction manifold (15) in fluid communication with two suction openings (8) located at opposite ends... Agent: Pearne & Gordon LLP

20070264146 - Screw compressor for high input power: The invention relates to oil-flooded screw compressors having a male rotor and female rotor each featuring preferably a ratio of male-to-female rotor lobes of 4:6, 5:6 or 5:7. In order to decrease the bearing load at higher working pressures, the profile sections of the rotors are shortened, and an intermediate... Agent: Horst M. Kasper

20070264147 - Method of transforming energy in a rotary screw machine of volumetric type: A method of transforming energy in a rotary screw machine that comprises a first and a second set of conjugated male and female elements spaced apart from each other along a central axis and having inner/outer profiled surfaces. Upon rotary motion of the male and/or female elements, working chambers are... Agent: Connolly Bove Lodge & Hutz LLP (for Cabinet Beau De Lomenie)

20070264148 - Gear pump arrangement: A gear pump arrangement comprising a pair of intermeshing gears (16, 18) located between bearing blocks (24) and rotatable to pump fluid from an inlet (12) to an outlet (14), wherein at least one of the bearing blocks (24) comprises a body (28) formed with a recess (32) within which... Agent: Andrus, Sceales, Starke & Sawall, LLP

20070258840 - Gerotor motor and brake assembly: A hydraulic device includes a gerotor assembly, a wobble stick, an output shaft, a housing assembly, a first port in the housing assembly, a second port in the housing assembly, first brake disks, second brake disks, a piston, and a biasing member. The gerotor assembly includes a rotor and a... Agent: Fay Sharpe LLP

20070258841 - Gas compressor: In a gas compressor, housing heads are disposed to define an internal space with a housing, and two rotors housed in the internal space are rotatable to form in the internal space a compression chamber. The housing has an inner wall surface opposed to at least outer peripheral surfaces of... Agent: Posz Law Group, PLC

20070253853 - Scroll compressor: A scroll compressor includes an orbiting scroll engaged with a front case by pins and rings or ring holes to prevent rotation of the orbiting scroll. The rings or the ring holes have such an inside diameter that an orbiting radius defined by the pins and the rings or the... Agent: Kanesaka Berner And Partners LLP

20070253855 - Pump apparatus and power steering: In order to realize cost reduction in a gear pump apparatus by reducing form accuracy of a gear while securing pump performance, a running-in coating is provided on a tooth sliding contact portion when forming a confinement area in at least one of gears of the gear pump apparatus. By... Agent: Crowell & Moring LLP Intellectual Property Group

20070253851 - Leakage loss flow control: A rotating piston machine includes a driving rotor and a driven rotor, the axes of rotation of the rotors enclosing a particular axial angle. The rotors include gear teeth which mesh with one another. One of the rotors is adjustable axially in the housing and is acted upon by an... Agent: Jordan And Hamburg LLP

20070253852 - Compact eccentric screw pump: The invention relates to a compact eccentric screw pump including a sliding articulation. The long-lasting operation of the pump is ensured by a plurality of functions. According to the invention, both the reaction pressure resulting from the transport pressure and the concomitant phenomena emerging from the eccentrically rotating rotor and... Agent: St. Onge Steward Johnston & Reens, LLC

20070253854 - Compressor with oil bypass: An oil lubricated compressor which includes a bypass oil line connecting respective oil paths upstream and downstream of the motor. The bypass oil path permits oil to be detoured around the motor in a tube that is external to the compressor shell and flows back into the shell near the... Agent: Katten Muchin Rosenman LLP