Controlling apparatus for electric tool
US7034240B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 29, 2004 |
| Grant date | Apr 25, 2006 |
| Priority date | — |
| Expiry date | Dec 29, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H9/063
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric tool includes a power supply, a controlling apparatus and a two-way motor. The motor includes first and second leads. The controlling apparatus includes a first conductive element connected with the anode of the power supply, a second conductive element connected with the cathode of the power supply, a switching device comprising a carrier for carrying and switching the conductive elements between a neutral position, a first operative position and a second operative position. In the neutral position, the conductive elements do not contact the leads of the motor. In the first operative position, the first end of the first conductive element contacts the first lead of the motor and the second end of the second conductive element contacts the second lead of the motor. In the second operative position, the second end of the first conductive element contacts the second lead of the motor and the first end of the second conductive element contacts the first lead of the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.