Power tool trigger assembly
US6717080B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 2003 |
| Grant date | Apr 6, 2004 |
| Priority date | — |
| Expiry date | May 22, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H15/102
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A trigger assembly for an electric power tool including a motor comprises a base for fixing within the power tool and a trigger supported by the base for inward and outward movement. A mechanical switch in the base switches on and off the motor. An operating circuitry including a solid-state device in the base controls the motor when the switch is closed. A slider guided within the base for movement by the trigger operates the switch and the operating circuitry. The switch has a fixed contact, a moving contact pivotable into contact with and out of contact from the fixed contact, and a spring biassing the moving contact towards the closed position. The moving contact has a first end for contacting the fixed contact and a second end for engagement by the slider to cause pivoting of the moving contact to the open position. Two such switches are used as main and bypass switches, with their moving contacts supported by a common conductive support together forming a switch module to facilitate installation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.