Class / Patent application number | Description | Number of patent applications / Date published |
173177000 | Fluid pressure change controls drive | 6 |
20080264662 | Right-handed and reverse air channel button for a pneumatic tool - A right-handed and reverse air channel button for a pneumatic tool includes a basic body, at least one operating member and two air intake passageways. The basic body is pivotally positioned in a positioning hole of the base of a pneumatic tool, the operating member is secured at one side of the basic body and the air intake passageways are bored in the annular wall of the basic body. When the operating member is turned to actuate the basic body to rotate for a preset angle, the air intake a passageways will respectively correspond to an air intake channel and two guide channels of the base, which communicate with the positioning hole. Thus, air can pass through the basic body and get into the base to drive the pneumatic tool to rotate clockwise or counterclockwise, able to control the air amount, easy in assembly and convenient in operation. | 10-30-2008 |
20080296035 | Striking Device in Particular a Hydraulic Hammer Driven - The invention relates to a striking device ( | 12-04-2008 |
20100170689 | Hydraulic Aggregate for Hydraulic Power Wrenches - The hydraulic aggregate comprises, within a container ( | 07-08-2010 |
20100276171 | Pneumatic Drive System - A pneumatic drive system ( | 11-04-2010 |
20120055690 | IMPACT TORQUE ADJUSTING DEVICE OF HYDRAULIC TORQUE WRENCH - [Problem] To present a impact torque adjusting device of a hydraulic torque wrench capable of enhancing the precision of the magnitude of the impact torque generated by the impact torque generating device of the hydraulic torque wrench, shortening the generation period of impact toques, and enhancing the durability of the impact torque generating device of the hydraulic torque wrench, when rotating in two directions, that is, in normal rotation (when tightening) and in reverse rotation (when loosening). | 03-08-2012 |
20130081839 | HYDRAULICALLY OPERATED TOOL WITH RELIEF VALVE ASSEMBLY - A relief valve assembly limits the maximum torque of a gear motor of a hydraulically driven tool. The relief valve assembly dumps flow to a return channel to return hydraulic fluid to the supply when the relief valve assembly is activated. The relief valve assembly is placed in the channel of a directional valve spool, and varies its pressure setting depending upon spool position. This is useful to vary the pressure settings of a hydraulic motor in different directions. | 04-04-2013 |