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Rotary expansible chamber devices

Below are recently published patent applications awaiting approval from the USPTO. Recent week's RSS XML file available below.
Listing for abstract view: USPTO application #, Title, Abstract excerpt,Patent Agent. Listing format for list view: USPTO National Class full category number, title of the patent application.
03/26/2015 > 5 patent applications in 5 patent subcategories.

20150086403 - Internal-gear pump and hydraulic circuit for a motor vehicle drivetrain: An internal-gear pump has a housing which has a first fluid port and a second fluid port. An inner rotor is mounted in the housing so as to be rotatable about an inner rotor axis and has an external toothing. An outer rotor is rotatable in the housing about an... Agent:

20150086404 - Horizontal type scroll compressor: A horizontal type scroll compressor includes a motor housing with a driving motor therein, a main scroll coupled to one side of the motor housing and having a fixed wrap for forming compression chambers, an orbiting scroll having an orbiting wrap and coupled to a crankshaft inserted through the main... Agent:

20150086405 - Electric oil pump: An electric oil pump includes a rotor driven to rotate by a motor and a pump body having a pump chamber accommodating the rotor, an intake port for introducing oil into the pump chamber according to rotation of the rotor, a discharge port for discharging oil from the pump chamber... Agent: Aisin Aw Co., Ltd.

20150086406 - Reduced noise screw machines: A reduced noise screw expander is described, which comprises a main rotor and a gate rotor each having an ‘N’ profile. The rotors are designed so that the torque on the gate rotor caused by pressure forces is in the same direction as the torque on the gate rotor caused... Agent:

20150086407 - Rotary piston engine which acts as a pump, condenser or motor for a fluid: The invention relates to a rotary piston engine (2) which operates as a pump, condenser or motor for a liquid or gaseous medium. The rotary piston engine (2) has a first gear (4) having a first central axis (I), a second gear (6) arranged opposite the first gear (4) and... Agent: Robert Bosch Gmbh

03/19/2015 > 6 patent applications in 6 patent subcategories.

20150078943 - Tunable progressive cavity pump: A well pump assembly includes a progressive cavity pump having a stator with an elastomeric inner portion. The stator has an axial cavity with internal lobes; a rotor with external lobes positioned within the axial cavity. An effector selectively increases and decreases a stiffness of the stator by changing a... Agent:

20150078944 - Variable displacement vane pump: A variable displacement vane pump is provided. This pump includes a pump housing including, a driving shaft, a rotor, a plurality of vanes, a cam support surface, a cam ring, an intake port formed at the pump housing, a discharge port formed at the pump housing, and a cam ring... Agent: Hitachi Automotive Systems Steering, Ltd.

20150078945 - Scroll compressor: A scroll compressor (10), comprising a fixed scroll (150), a movable scroll (160) and a drive shaft (30); the scroll compressor (10) further comprises a movable scroll counterweight (40); the movable scroll counterweight (40) is configured to rotate with the drive shaft (30); and the centrifugal force of the movable... Agent:

20150078946 - Vane pump: A vane pump with a pump housing in which a cam ring is constructed or arranged, and wherein a rotor is provided that is mounted in the cam ring so that it can rotate about a rotational axis , wherein the cam ring has an inner contour with a variable... Agent:

20150078947 - Downhole motor stator and method of manufacture: A method for producing modular down hole, hydraulic motor components involving the formation of replaceable stator slugs to be collectively housed within a stator housing to form a stator assembly, including, in some embodiments, replaceable lobe components for the stator slugs for altering the interference with a selected rotor for... Agent:

20150078948 - Oil pump: An oil pump includes a rotor, an outer peripheral member accommodating the rotor, a first plate, and a second plate. A discharge passage through which hydraulic fluid is discharged is connected to a discharge port of the first plate. A first pressure gradually-changing groove and a second pressure gradually-changing groove... Agent: Jtekt Corporation

03/12/2015 > 5 patent applications in 5 patent subcategories.

20150071804 - Variable flow hydraulic machine: A variable flow external rotor hydraulic machine (10, 10′) has an inlet (26, 26′) an outlet (28, 28′), a rotor set having a first rotor (58, 58′) mounted for rotation about a first rotor axis and a second rotor (68, 68′) mounted for rotation about a second rotor axis, the... Agent:

20150071805 - Rotor pump and rotary machinery comprising same: The present invention relates to a rotor pump (10), comprising: a pump body (50A) capable of being rotatably driven and forming an accommodation cavity (52) therein; a pump wheel (20, 20A) having a main body part (22) capable of rotating in the accommodation cavity and a first shaft part (24)... Agent:

20150071806 - Rotary vane air motor with improved vanes and other improvements: A rotary vane air motor comprises a rotor, stator and vanes. The rotor has slots for the vanes, and the vanes may move between a retracted position and a contact position in which the vanes contact the cylinder. Each vane may have a longitudinal portion whose shape conforms generally to... Agent:

20150071807 - Swinging abutment rotary pump: A rotary pump device includes a stator chamber with a cylindrical inner wall having intake and exhaust ports and a swinging abutment mounted therein, and a rotor eccentrically mounted on an axial drive shaft for rotation within the chamber. The rotor keeps continuous wiping contact with the chamber wall while... Agent:

20150071808 - Belt and support for a rotor mechanism in a rotary apparatus and rotary apparatus comprising same: A pump comprises a housing having an inner contour wall defining a fluid chamber. A rotor mechanism is positioned within the fluid chamber and comprises a belt and a rotatable rotor assembly. The belt is mounted to the rotor assembly. A movement imparting assembly imparts a rotational movement to the... Agent:

03/05/2015 > 8 patent applications in 8 patent subcategories.

20150064037 - Helical rotor, progressing cavity pump and pumping device: A helical rotor intended to be arranged in a progressing cavity pump, said progressing cavity pump being capable of pumping a multiphase fluid from a fluid reserve, the helical rotor comprising at least one mixer capable of homogenizing the multiphase fluid located in said fluid reserve.... Agent:

20150064038 - Internal gear pump: An internal gear pump includes a housing having a pump chamber in which an inner rotor and an outer rotor are arranged. A suction port in communication with a suction path and a discharge port in communication with a discharge path are formed at the housing. The pump chamber includes... Agent: Aisin Seiki Kabushiki Kaisha

20150064039 - Fluid machine and rankine cycle: A fluid machine includes: a first shaft; a compressor/expander fluid machine; a planetary gear mechanism having a sun gear connected to a second shaft rotating in synchronization with the compressor/expander fluid machine, a ring gear connected to the first shaft, a planetary gear, and a planetary carrier; a first clutch... Agent: Sanden Corporation

20150064040 - Compressor assembly with liquid sensor: A compressor may include a shell, a compression mechanism, first and second temperature sensors, and a control module. The shell may define a lubricant sump. The compression mechanism may be disposed within the shell and may be operable to compress a working fluid. The first temperature sensor may be at... Agent:

20150064041 - Positive displacement pump with improved sealing arrangement and related method of making: A rotary positive displacement pump comprising a pair of forwardly-positioned sealing arrangements and a pair of rearwardly-positioned selective sealing arrangements. The forwardly-positioned sealing arrangements each form a dynamic seal between a central portion of the one of the rotors and a corresponding hub proximate the forward ends of the shafts... Agent: Ampco Pumps Company

20150064042 - Gas compressor: In a gas compressor, an outline shape of an inner peripheral surface (41) of a cylinder (40) is set such that in a point before a compression chamber (43B) adjacent to a compression chamber (43A) in the upstream side in the rotational direction (W) is exposed to a discharge hole... Agent:

20150064043 - Rotor assembly for rotary compressor: Implementations of the present invention comprise a rotor assembly for use in a rotary compressor. The rotor assembly includes a shaft, a pair of end plates, an input shaft, and a rotor. The rotor can be positioned between the pair of endplates. At least two of these components can be... Agent:

20150064044 - Gas compressor: A gas compressor which can be efficiently reduced an oscillation (damping) generated in a housing even if the oscillation generated in a cylinder is directly propagated to the housing during operating, is provided. Each of ribs (10a and 10b) extending from each of fitting units to the vicinity of a... Agent:

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