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| Application No. | Application Title | Issue Date |
| 20110308827 | Power Screwdriver A power screwdriver is disclosed, having a drive for driving a tool spindle having a controller for controlling the drive, having a monitoring device for monitoring the rotation speed or the torque, and having a monitoring device for monitoring a switch-off criterion, w... | 12/22/2011 |
| 20110303432 | POWER TOOL TRANSMISSION A power tool that includes a housing assembly, a motor received in the housing assembly, a trigger, an output spindle, a transmission and a bearing. The transmission is received in the housing assembly and transmits rotary power between the motor and the output spindle.... | 12/15/2011 |
| 20110214894 | OIL PULSE TOOL According to an aspect of the invention, an oil pulse tool includes: a motor generating a driving force according to a driving voltage; an oil pulse unit driven by the driving force and generating a torque in a pulse-like shape when the motor passes a strike position on... | 09/08/2011 |
| 20110203819 | Power tool and torque adjustment method for the same A power tool includes a detecting member mounted in an output end of a housing, and a to-be-detected member mounted in a driver. When the driver is assembled with the output end of the housing, the detecting member will detect the to-be-detected member and transmit a si... | 08/25/2011 |
| 20110167651 | CIRCULAR SAW A circular saw in which cutting speed of a saw blade is smoothly controlled. A speed change mechanism of a circular saw includes first and second rotating shafts disposed parallel to each other, and first and second gear trains having different gear ratios and each havi... | 07/14/2011 |
| 20110000688 | ELECTRIC ROTATING TOOL, CONTROL METHOD, AND PROGRAM Tightening torque is appropriately managed by a simple means. An electric rotating tool (40) has a brushless DC motor (2), an inverter circuit part (3), and a control circuit part (4). The control circuit part (4) has a current detecti... | 01/06/2011 |
| 20100147545 | HANDHELD POWER TOOL DEVICE FOR DETECTING TORQUE The invention is based on a device for handheld power tool for detecting a torque, having at least one sensor unit. It is proposed that the sensor unit is intended for detecting a deformation parameter. The sensor unit has at least one sensor element that is embodied as... | 06/17/2010 |
| 20100116101 | DEVICE AND METHOD FOR TIGHTENING A NUT PLACED ON A THREADED END, AND ASSEMBLED WASHER AND NUT FOR SUCH A DEVICE Device (10, 20, 30) and method for tightening a bolt (2) or a nut (12) threaded on its end, which end extends through at least a first body (3) and screws into a hole (5) in a second body (4) or extends through the second body into ano... | 05/13/2010 |
| 20100059240 | METHOD FOR TIGHTENING A SCREW CONNECTION AND SCREW DRIVING TOOL Disclosed is a method for screwing in and tightening a screw connection (1) to a predetermined tightened level (2), especially a predetermined torque level (2) or a predetermined pretension level, with the aid of a hand-held screwing tool (3)... | 03/11/2010 |
| 20090277658 | VARIABLE SPEED TOOL AND VARIABLE SPEED CONTROL METHOD The present invention has disclosed a variable speed tool and a variable speed control method. The tool includes a switch; a gearbox housing; a motor; an outputting shaft; a multistage transmitting gear train and a gearshift ring which are mated with the motor and the o... | 11/12/2009 |
| 20090194307 | Torque limiting driver and method A rotation driver and method for transmitting a limit torque to a fastener by having cam members which rotate together for torquing and then reverse the rotation to return to their starting position for repeating the torquing. The same two surfaces respectively on the t... | 08/06/2009 |
| 20090139738 | Screwing Tool And Method For Controlling The Tightening Angle Of Screwed Joints The invention proposes a method for controlling the tightening angle of screwed joints when tightening is effected using a hand-held screwing tool, wherein the torque is monitored until a predefined threshold value is reached, the angle of rotation is measured from the ... | 06/04/2009 |
| 20090014192 | Control method and control unit for impact type screw fastening device An object is to improve accuracy of tightening torque and to shorten time necessary for fastening a screw in an impact type screw fastening device that uses an electric motor as a rotation driving source. A control method for the impact type screw fastening device that ... | 01/15/2009 |
| 20080000333 | Screw fastening machine The present invention aims to provide a screw fastening machine for reliably switching and changing a driving force transmitting path with the seating on a work as a reference. According to the screw fastening machine in which a first pulle... | 01/03/2008 |
| 20060218768 | Bolt tightening method and bolt tightening apparatus After it is tightened with a snug torque TA, a bolt is tuned by a total turning angle θS equivalent to the sum of an initial-set turning angle θA and a corrective additional-turning angle (θB+θC). The corrective... | 10/05/2006 |
| 20050173142 | Tool apparatus, system and method of use A system, and a method of using a system, for controlled tool operation. The method includes providing a tool used in a force application such as a such torque application. The tool communicates with a controller which can communicate with the tool, and to a display in ... | 08/11/2005 |
| 20050150335 | Torque sensing tool A torque applying tool such as a nutrunner or torque wrench incorporates torque sensors responsive to strain in a shaft mounting an output square drive head the strain being measured as it exists immediately adjacent the drive head. The shaft is a hollow quill shaft an ... | 07/14/2005 |
| 20050045353 | Power tool used for fastening screw or bolt In a power impact tool for fastening a screw or a bolt, malfunction that driving of a motor is stopped before the screw or the bolt is fastened completely can be prevented. A fastening judger judged that the fastening operation is completed at least when a torque variat... | 03/03/2005 |
