Class / Patent application number | Description | Number of patent applications / Date published |
060473000 | Pump means moves motive fluid from one chamber to an opposite chamber of opposed expansible chambers having a common output | 7 |
20090260354 | Axle Driving Apparatus - An axle driving apparatus in which a hydraulic pump and a hydraulic motor which constitute a hydrostatic transmission are disposed on a center section. In a horizontal portion of the center section are provided a pair of linear oil passages in parallel to each other. A pair of arcuate ports are provided on a pump mounting surface formed on the horizontal portion of the center section. The pair of arcuate ports are substantially perpendicular with respect to the direction in which the oil passages extend. The axis of slanting movement of a movable swash plate of the hydraulic pump extends laterally of the vehicle body on which the axle driving apparatus is provided. The rotating direction of an arm provided on a control shaft for slantingly operating the movable swash plate is coincident with the operating direction of a control rod connected with a speed changing member. Thus, the link mechanism for connecting the speed changing member and the control arm for the movable swash plate is simplified. | 10-22-2009 |
20110146262 | ELECTROHYDRAULIC ACTUATOR WITH A PUMP INCORPORATED IN THE PISTON - The invention relates to an electrohydraulic actuator comprising a body ( | 06-23-2011 |
20130055706 | ELECTRO-HYDRAULIC ACTUATION GROUP FOR AN AUTOMOTIVE SERVO-ASSISTED MECHANICAL TRANSMISSION - In an automotive servo-assisted mechanical transmission, an electro-hydraulic actuation group has an actuation unit, a power unit able to provide hydraulic pressure to the actuation unit and an electronic control unit, the actuation and power units being equipped with respective components that are all mounted on a hydraulic casing of the actuation unit so as to define with one another a single assembly structurally separated from the electronic control unit, at least part of the components being equipped with respective electrical connectors that are arranged in a manner such that they can all be engaged by a same multiple electrical connector device. | 03-07-2013 |
20150330413 | HYDRAULIC CIRCUIT FOR CONSTRUCTION MACHINE - A hydraulic circuit for a construction machine, capable of enhancing the effect of reducing a pressure loss due to return oil from a head-side chamber of a hydraulic cylinder, with a simple structure. The circuit includes a hydraulic cylinder, a control valve, a return pipeline, and a tank direct-communication line providing direct communication between the control valve and a tank separately from the return pipeline. The control valve has a flow path leading return oil from a head-side chamber of the hydraulic cylinder to the tank direct-communication line and a flow path leading return oil from a rod-side chamber of the hydraulic cylinder to the return pipeline. | 11-19-2015 |
060476000 | Reversible delivery from pump means | 3 |
20100180586 | Self-Contained Hydraulic Actuator System - The hydraulic linear actuator system of the present invention includes a pump that is configured to rotate in a single direction at a substantially constant velocity. Both the direction and flow rate of fluid through the system is controlled by adjusting the positional relationship between the stator and the rotor of the pump. This positional relationship is adjustable between a forward flow state, a non-flow state and a reverse flow state. The hydraulic linear actuator is responsive to the flow of fluid through the system so as to be displaced in a first direction by the forward flow state of the pump and in a second direction by the reverse flow state of the pump. | 07-22-2010 |
20130008156 | Hydraulic Actuating Device For Actuation Of One Or More Setting Elements In, In Particular, A Motor Vehicle Transmission - An actuating device for hydraulically actuating at least one setting element comprising a pump, which has an electric pump drive, with reversible pumping direction, at least one double-acting piston-cylinder arrangement, which is connected therewith and the piston of which is operatively connected with the setting element, and a hydraulic fluid reservoir from which the hydraulic fluid can be pumped to the piston-cylinder arrangement in order to hydraulically load the piston thereof for a setting element movement depending on pumping direction on one (effective surface | 01-10-2013 |
20160201694 | MINIATURE HIGH PRESSURE PUMP AND ELECTRICAL HYDRAULIC ACTUATION SYSTEM | 07-14-2016 |