Celebrity Inventors
Glam girl Heddy Lamar may have used her good looks to good effect on the silver screen, but she put her smarts to better use as an inventor. During World War II, she co-patented a frequency-switching system for torpedo guidance that was considered years ahead of its time.
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| Application No. | Application Title | Issue Date |
| 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 |
| 20090250233 | METHOD AND APPARATUS FOR DETERMINING WHEN A THREADED FASTENER HAS BEEN TIGHTENED TO A PREDETERMINED TIGHTNESS Apparatus (25) for determining when a fastener has been tightened to a predetermined tightness level by an impact wrench (1) comprises determining the number of hammer impacts to advance an anvil (9) of the impact wrench (1) through a predete... | 10/08/2009 |
| 20090241744 | TIGHTENING TOOL AND TIGHTENING TOOL MANAGEMENT SYSTEM A tightening tool for tightening a fastener is disclosed which comprises a motor and a main shaft that engages with the fastener. A clutch is disposed between the motor and the main shaft so that the clutch rotates the main shaft by transmitting torque from the motor to... | 10/01/2009 |
| 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 |
| 20090120657 | SAFETY MECHANISM FOR A ROTARY HAMMER An improved method is provided for controlling a power tool having a rotary shaft. The method includes: disposing an inertial mass in a housing of the power tool, such that the inertial mass is freely rotatable about an axis of rotation which is axially aligned with the... | 05/14/2009 |
| 20060032648 | Power screwdriver A power screwdriver is disclosed having a drive which is coupled via a clutch, disengaging as a function of torque, to a tool drive shaft for driving a tool. The screwdriver comprises an electronic control unit for controlling the drive, and a sensor which is coupled to... | 02/16/2006 |
| 20050109520 | Power fastening tool In a power fastening tool for fastening a fastening member such as a screw or a fastening member, malfunction that driving of a motor is stopped before the fastening member is fastened completely can be prevented. A fastening judger judges that the fastening operation i... | 05/26/2005 |
| 20050109519 | Power impact tool In a power impact tool for fastening a fastening member, a torque for fastening the fastening member can be estimated without using a high-resolution sensor and a high-speed processor. The power impact tool comprises a rotation speed sensor for sensing a rotation speed ... | 05/26/2005 |
| 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 |
