Power tools with improved switch devices
US6259047A · kind A · utility
6Cited by
6References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 6, 1999 |
| Grant date | Jul 10, 2001 |
| Priority date | — |
| Expiry date | Dec 6, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H9/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power tool includes a motor and a switch device for starting and stopping the motor. The switch device includes an operation member and an on-operation prevention device. The operation member can pivot about a pivotal axis between an on position and an off position and has an on-operation arm and an off-operation arm on either side of the pivotal axis for operation by an operator. The on-operation prevention device serves to prevent the operation member from moving from the off position to the on position and to permit the operation member to move from the off position to the on position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.