Power tools
US6687567B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 5, 2003 |
| Grant date | Feb 3, 2004 |
| Priority date | — |
| Expiry date | Feb 5, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B23/1475
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Power tool (1) may include a drive source (22). A device for generating an elevated torque, such as a hammer (4) and anvil (2), may be operably coupled to the drive source. Further, a trigger switch (48) may energize the drive source. Preferably, a sensor (30) detects when the hammer has begun to strike the anvil and generate the elevated torque. A control device (38) communicates with the sensor, the trigger switch and the drive source. Preferably, the control device may control the drive source according to either a measurement mode or an automatic stop mode. In the measurement mode, the control device preferably activates the drive source when the trigger switch is switched from the OFF position to the ON position, and stop the drive source when the trigger switch is switched from the ON position to the OFF position. Further, the control device preferably measures a time period from when a first impact is detected by the sensor to when the trigger switch is switched from the ON position to the OFF position. In the automatic stop mode, the control device preferably activates the drive source when the trigger switch is switched from the OFF position to the ON position, and stops t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.