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| Application No. | Application Title | Issue Date |
| 20110107881 | PNEUMATIC IMPULSE WRENCH WITH OPERATION CONTROL MEANS A pneumatic impulse wrench for tightening screw joints includes a housing with a pressure air inlet passage, an exhaust air outlet passage, a rotation motor, a hydraulic impulse generator, and is connected to a stationary programmable control unit. The impulse wrench al... | 05/12/2011 |
| 20110067534 | Ratchet wrench A ratchet wrench has a handle, a transmitting device, a torque adjusting device and a ratchet head. The transmitting device is connected to the handle and has a barrel, a transmitting seat and a transmitting shaft. The barrel is connected to the handle and has two threa... | 03/24/2011 |
| 20100024611 | POWER DRIVER AND METHOD OF USING THE SAME A pneumatic driver for driving a fastener including an air inlet connectable to an air supply and a pneumatically driven motor driveable by air supply about a tool axis. The driver further including a bit holder, a torque control, and a push rod in mechanical communicat... | 02/04/2010 |
| 20090260485 | Method and Device for Controlling a Hydraulically Operated Power Wrench In a method for controlling a hydraulic power wrench with a pivotable lever pivoted by a piston-cylinder unit and a ratchet arrangement for stepwise rotation of a ratchet bushing by advancing and return strokes, parameters such as nominal torque or pre-load or screw par... | 10/22/2009 |
| 20090205442 | OILFIELD TUBULAR TORQUE WRENCH A method for measuring applied torque of a oilfield tubular torque wrench, the oilfield torque wrench being operable to torque a tubular about an axis of rotation and the oilfield torque wrench including a lower tong including a recess through which the axis of rotation... | 08/20/2009 |
| 20090165609 | DIGITAL POWER TORQUE WRENCH OF INDIRECT TRANSMISSION The present invention relates to a digital power torque wrench of indirect transmission, which is composed of an eccentric driving module, a sensing module, a ratchet module and a control module. The eccentric driving module is used for transmitting power to the sensing... | 07/02/2009 |
| 20080115635 | Pneumatic Power Wrench With Pre-Set Torque Levels A pneumatic power wrench comprises a housing (10) with a pressure air supply passage (16), a motor (13) and an adjustable pressure responsive shut-off valve (17) located in the air supply passage (16) and including a valve element (... | 05/22/2008 |
| 20080011129 | SCREW PRESTRESSING DEVICE AND METHOD A screw prestressing device having a piston and a draw pin structured and arranged to be disconnectably coupled to an element and movable, via the piston, to apply a defined prestressing force in the element. ... | 01/17/2008 |
