| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 091471000 | MISCELLANEOUS (E.G., METHODS, ETC.) | 10 |
| 20080216645 | Fluid control system having selective recruitable actuators - A fluid control or actuation system providing selective recruiting of actuators antagonistic to one another to provide variable output power, such as that used to drive a load. The actuators are intended to comprise different sizes, and to be operable with one or more pressure control valves capable of providing displacement of a non-recruited actuator without requiring active input to cause such displacement. Being able to selectively recruit different sized actuators to drive the load, and being able to displace non-recruited without active input, effectively incorporates a gearing function into the fluid control system. | 09-11-2008 |
| 20090255399 | PNEUMATIC MOTOR - A pneumatic motor includes a cylinder, a rotor and a drive shaft. The cylinder includes a cylinder body having two ends, a first cover and a second cover. The first cover is mounted on one of the ends of the cylinder body and has a first bearing housing, a first bearing and a first blocking ring. The first bearing is mounted in the first bearing housing and has an annular clearance. The first blocking ring is mounted between the first bearing housing and the first bearing and covers the annular clearance of the first bearing. The rotor is mounted rotatably in the cylinder body. The drive shaft is mounted securely through the rotor. When compressed air is expelled from the cylinder body, the compressed air does not blow lubricants out of the first bearing because the first blocking ring closes the annular clearance. | 10-15-2009 |
| 20110048224 | HYDRAULIC PUMP OR HYDRAULIC MOTOR HAVING A ROTATION SPEED SENSOR - The invention relates to a hydraulic pump or hydraulic motor having an orbiting cardan shaft. The hydraulic pump or motor includes a housing having an end cover and a port plate. The cardan shaft is mounted in the housing and extends through the port plate. A rotation speed sensor is fixed to the port plate and includes a sensor probe obtaining its signal from the orbiting cardan shaft. A piston may be in contact with the cardan shaft and moving forward and back due to the orbital motion of the cardan shaft. The sensor probe then obtains its signal from the movement of the piston. | 03-03-2011 |
| 20120090458 | Gas Strut Separation For Staged Rocket - A staged rocket apparatus includes first and second stages connected by a releasable connector. A plurality of pressurized gas struts are connected between the first and second stages and provide a separating force urging the first and second stages apart. The gas struts are held in a telescopingly collapsed first position by the releasable connector. The separating force is maintained at a minimum value so long as the releasable connector holds the struts in their first position. When the releasable connector is disconnected the separating force increases due to gas flow through a metering passage having a progressively increasing flow area from a high pressure chamber to a low pressure chamber. | 04-19-2012 |
| 20130247750 | ELECTRO-HYDRAULIC PILOT OPERATED RELIEF VALVE - Provided is a method of and valve assembly for dumping excess fluid during retraction of a cylinder actuator. The method includes pumping fluid with a pump from a piston side of the cylinder to a rod side of the cylinder; opening a first check valve with relatively high pressure fluid from a downstream side of the pump to allow flow into the rod side of the cylinder; and opening an extend relief valve via a first spool with fluid from the downstream side of the pump to allow excess fluid at an upstream side of the pump to return to a reservoir at relatively low pressure. | 09-26-2013 |
| 20130291714 | HYDRAULIC SYSTEM INCLUDING PRIORITY BASED VALVE SEQUENCING - An exemplary hydraulic system includes a plurality of digital valves, each valve fluidly connectable to a corresponding hydraulic load. The digitals valves are operable to fluidly connect the corresponding hydraulic load to a pressure source. The hydraulic system further includes a digital controller operably connected to the plurality of digital valves. The digital controller is configured to assign a priority level so that it is associated with each of a plurality of hydraulic loads, and to formulate a pulse width modulated control signal based on the assigned priority levels. The digital controller transmits the control signal to the plurality of digital valves for controlling the operation of the valves. | 11-07-2013 |
| 20130298757 | METHOD FOR CONTROLLING AN ACTUATOR - A method of controlling a pneumatic actuator for actuation of a pneumatically actuated device. The actuator comprises a piston and a pneumatic cylinder, the piston is arranged to move axially within the pneumatic cylinder. The piston is moved as a function of a pressure in a pressure chamber of the pneumatic cylinder, and the pressure in the pressure chamber is adjusted by a control unit which controls at least a valve and/or a pressure regulator and/or a pressure generating device. A pilot control component, for the control, is determined as a function of at least a sliding friction force and/or at least a static friction force of the pneumatic actuator. | 11-14-2013 |
| 20150345489 | METHOD AND DEVICE FOR ACTUATING AN ELECTRICALLY COMMUTATED FLUID WORKING MACHINE - The invention relates to a method for actuating an electrically commutated fluid working machine ( | 12-03-2015 |
| 20150369265 | METHOD AND DEVICE FOR INDICATION OF THE POSITION OF HYDRAULICALLY ACTUATED ARMATURES - The invention relates to a method for indicating the position of a hydraulically actuated armature, having a piston ( | 12-24-2015 |
| 20160195075 | PUMP DEVICE AND METHOD THEREFOR OF CONVEYING FLUID, AND METHOD OF MANUFACTURING THE PUMP DEVICE | 07-07-2016 |
