Class / Patent application number | Description | Number of patent applications / Date published |
092177000 | Non-circular | 7 |
20130269516 | Compact Linear Actuator with Anti-Rotation Device - A linear actuator is provided having a housing with a bore having at least first and second portions extending therethrough. The second portion has a polygonal geometry with substantially rounded corners having at least one planar bearing surface. A shaft is in sliding engagement with the first portion of the bore, and a piston member is operatively coupled to the shaft. The piston member has a mating geometry to the second portion of the bore, wherein the piston member is in sliding engagement with the second portion of the bore. An anti-rotation member is coupled to the piston member or shaft and has a generally D-shaped geometry with a planar anti-rotation bearing surface. Contact between the anti-rotation member and the housing is limited to a sliding engagement between the anti-rotation bearing surface and one of the at least one bearing surfaces based on an orientation of the anti-rotation member. | 10-17-2013 |
20130269517 | Compact Linear Actuator with Anti-Rotation Device - A linear actuator has a housing with a bore extending therethrough. A first portion of the bore extends into the housing from a first end, and a second portion of the bore extends into the housing from a second end of the housing. The second portion of the bore has a rectangular geometry with substantially rounded corners when viewed from the second end. A shaft is in sliding engagement with the first portion of the housing. A piston member is coupled to the shaft and has a rectangular geometry with substantially rounded corners. The piston member is in sliding engagement with a first interior surface of the second portion of the bore via one or more o-rings. An anti-rotation apparatus is associated with one or more of the piston member and the shaft, wherein the anti-rotation member generally prevents a rotation of the shaft with respect to the housing. | 10-17-2013 |
20140069273 | Rotary Engine Rotor - A rotary engine rotor ( | 03-13-2014 |
20140360359 | Rotary Piston - A rotary piston for a rotary piston pump includes at least one supporting body, through which a rotational axis of the rotary piston extends, and at least one end cap section, which is disposed radially outwards from the at least one supporting body and is connected flexibly, preferably elastically, to the at least one supporting body. | 12-11-2014 |
20160146204 | PLUNGER APPARATUS FOR HIGH PRESSURE PUMP - A plunger apparatus for a high pressure pump includes a plunger having a quadrangular cross section and reciprocating in an internal passage provided in a housing to deliver a low pressure fluid to a compression chamber. A guide is connected to the plunger to guide the plunger when the plunger reciprocates. | 05-26-2016 |
20160146205 | FLUID-PUMP INNER ROTOR - Provided is a fluid-pump inner rotor that can be easily fitted to an outer rotor. This fluid-pump inner rotor includes a rotor member having a through hole along a rotational axis and a shaft member fitted in the through hole. Fitting strength between a first hole region provided in an inner face of the through hole of the rotor member which region extends along a rotational axis of the rotor member from one of end faces thereof perpendicular to this rotational axis and a first shaft region provided in an outer face of the shaft member is set greater than fitting strength between a second hole region provided in the inner face of the through hole of the rotor member and a second shaft region provided in the outer face of the shaft member. | 05-26-2016 |
20160186747 | Method and Apparatus to Manufacture a Progressive Cavity Motor or Pump - A stator and a method of manufacturing at least a portion of a progressive cavity motor or pump include disposing a cylindrical shell within a cylindrical housing, disposing a stator mold within the cylindrical shell, disposing an elastomeric material between the stator mold and the cylindrical shell, removing the stator mold from within the elastomeric material, thereby forming an elastomeric material layer having a stator profile within the cylindrical shell, and removing the cylindrical shell from within the cylindrical housing, thereby forming a cartridge having the elastomeric material layer disposed within the cylindrical shell. | 06-30-2016 |