Featured patents

Rotary Pump With Improved Seal
US 08814544 B2, Aug. 26, 2014, With working fluid bias, Sven Peters et al. / Schwabische Huttenwerke Automotive GmbH (Aalen-Wasseralfingen, DE)
A rotary pump with an improved seal on a control pressure chamber, comprising:…

Oil Pump
US 08870556 B2, Oct. 28, 2014, Inner member has five or more teeth, Masato Izutsu et al. / Yamada Manufacturing Co., Ltd. (Kiryu-shi, Gunma-ken, JP)
An oil pump comprising:…

Sealing System for Gerotor Apparatus
US 08753099 B2, June 17, 2014, Labyrinth, Mark T. Holtzapple et al. / The Texas A&M University System (College Station, US)
A gerotor apparatus, comprising:…

Scroll-Type Compressor
US 08678796 B2, March 25, 2014, Having specific wrap or end plate, e.g., shape, material, coating, Yoshiyuki Kimata et al. / Mitsubishi Heavy Industries, Ltd. (Tokyo, JP)
A scroll-type compressor comprising:…

Internal Gear Pump for a Brake System
US 08579619 B2, Nov. 12, 2013, With filler element, Rene Schepp et al. / Robert Bosch GmbH (Stuttgart, DE)
An internal gear pump for a brake system comprising:…

Screw Compressor Having a Gate Rotor Assembly With Pressure Introduction Channels
US 08523548 B2, Sept. 3, 2013, Non-parallel axis, Mohammod Anwar Hossain et al. / Daikin Industries, Ltd. (Osaka, JP)
A single-screw compressor comprising:…

Variable Displacement Vane Pump
US 08506270 B2, Aug. 13, 2013, Rotating inner working or reacting member repositioned relative to cylinder, Jun Soeda / Hitachi Automotive Systems, Ltd. (Hitachinaka-shi, JP)
A variable displacement vane pump comprising:…

Screw Compression Apparatus
US 08512019 B2, Aug. 20, 2013, Non-working fluid initially directed to shaft bearing, Yasushi Amano et al. / Kobe Steel, Ltd. (Kobe-shi, JP)
A screw compression apparatus comprising:…

Vane for a Single-Vane Vacuum Pump
US 08480386 B2, July 9, 2013, With Wear Surface Treatment or Integrally Plated Wear Layer, Willi Schneider / Joma-Polytec GmbH (Bodelshausen, DE)
A vane for a vane pump or for a single-vane vacuum pump, the pump…

Bi-Rotational Hydraulic Motor With Optional Case Drain
US 08459972 B2, June 11, 2013, Rotor has one less lobe than cylinder, Steven Buell / MP Pumps, Inc. (Fraser, US)
A bi-rotational hydraulic motor comprising:…

Patentorg has 264 documents under Rotary Expansible Chamber Devices Patents.

Narrow down the browsing criteria below to see more patents.

Select a subcategory
Quick navigation
New documents
  • Process for the Production of the Actinobacillus Pleuropneumoniae Toxins APXI or APXIII in a Liquid Culture Medium Under Supply of Air Enriched in Carbon Dioxide
  • Method for Manufacturing Nonvolatile Memory Device
  • Supply Chain Demand Satisfaction
  • Supply-Line Management Device
  • Storage Control Device and Method for Managing Snapshot