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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.
09/04/2014 > 3 patent applications in 3 patent subcategories.

20140248171 - Variable displacement pump having rotating cam ring: Vane pump mechanical losses are reduced by removing vane friction losses and replacing them with lower magnitude journal bearing fluid film viscous drag losses. A freely rotating cam ring is supported by a journal bearing. A relatively low sliding velocity is imposed between the cam ring and the vanes). This... Agent: Eaton Industrial Corporation

20140248172 - Scroll compressor: A scroll compressor includes a housing, a fixed scroll, and a movable scroll. A compression chamber is formed between the movable scroll and the fixed scroll. An opposing wall is located in and fixed to the housing. A back pressure region is formed between the opposing wall and the movable... Agent: Kabushiki Kaisha Toyota Jidoshokki

20140248173 - 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: Gullivert Technologies Inc.

08/28/2014 > 3 patent applications in 3 patent subcategories.

20140241926 - Apparatus and method for oil equalization in multiple-compressor systems: A method of operating a refrigeration system, that includes providing a plurality of compressors connected in parallel. The plurality of compressors includes a plurality of scroll compressors. The method further includes returning circulated refrigerant to the plurality of compressors, the circulated refrigerant having oil entrained therein. Returning circulated refrigerant to... Agent: Bitzer Kuehlmaschinenbau Gmbh

20140241927 - Vane-type hydraulic device: A vane pump (1) includes: a front side vane case (40), a rear side vane case (50), a pump housing (60), a pump cover (70), a drive shaft (30), a rotationally driven rotor (10), and vanes (20) provided in slot sections (13), wherein engaging groove sections and guide protrusions (46,... Agent: Tbk Co., Ltd.

20140241928 - Vacuum pump with rotor-stator positioning to provide non-return: A rotary-vane vacuum pump comprises a stator and a vaned rotor, the stator partly defining an outlet chamber and including an outlet passage opening to the outlet chamber. The rotor is rotatably sealed to the stator; it has a sealing area to block the outlet passage, and, an unsealing area... Agent: Ford Global Technologies, LLC

08/21/2014 > 4 patent applications in 4 patent subcategories.

20140234147 - Compressor: A rotary compressor includes a drive mechanism having a drive shaft with an eccentric part, and a compression mechanism. The compression mechanism includes a tubular cylinder covering an outer periphery of the eccentric part, a piston arranged inside the cylinder and fitted onto the eccentric part, an upper end plate... Agent: Daikin Industries, Ltd.

20140234148 - Scroll compressor: A scroll compressor configures suction and compression rooms between fixed and orbiting scrolls, includes a back pressure room at the orbiting scroll base plate back face, and is configured in an asymmetric tooth shape. A fluid outflow path for an orbiting scroll lap external line side compression room and a... Agent: Hitachi Appliances, Inc.

20140234149 - Scroll compressor: The present invention provides a scroll compressor which includes a housing, a stationary scroll including a stationary wrap, an orbiting scroll having an orbiting wrap, a receiving portion formed in the housing, a self-rotation preventing eccentric shaft installed in the receiving portion with a bearing interposed therebetween, a self-rotation preventing... Agent: Yujin Machinery Ltd.

20140234150 - Vane pump: A vane pump includes a rotor, slits which are radially formed in the rotor, vanes which slidably project from the slits, vane back pressure chambers which are defined between the base end parts of the vanes and the slits, a cam ring with which the tip parts of the vanes... Agent: Kayaba Industry Co., Ltd.

08/14/2014 > 2 patent applications in 2 patent subcategories.

20140227121 - Universal joint with cooling system: A progressing cavity pump system including a rotor and a stator having an inner cavity. The rotor is rotationally disposed inside the inner cavity of the stator such that rotation of the rotor relative to the stator causes material in the inner cavity to be pumped therethrough. The pump system... Agent: Moyno, Inc.

20140227122 - Claw pump: In a pump chamber (12), a male rotor (20) having claw portions and a female rotor (24) having recesses into which the claw portions enter are secured to rotating shafts (18a and 18b), respectively. The female rotor is provided with hollows on an upstream side in the rotational direction of... Agent: Anest Iwata Corporation

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