Impact power tools
US6598684B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 16, 2001 |
| Grant date | Jul 29, 2003 |
| Priority date | — |
| Expiry date | Nov 16, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B23/1405
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Power tools (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. 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 and the drive source and communicates signals to the control device when the hammer has begun to strike the anvil and generate the elevated torque. Preferably, the control device determines whether the when the hammer has begun to strike the anvil and generate the elevated torque either (1) before a fastener has reached a seated position against a workpiece or (2) after the fastener has reached the seated position against the workpiece. Thereafter, the control device only controls the operation the drive source based upon signals generated by the sensor after the fastener has reached the seated position against the workpiece. The power tools may optionally also include a setting device (34) for setting at least one operating mode and the setting device is preferably coupled to the control device. Further, a switch (48) may be provided to switch the …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.