Trigger mechanism
US7476821B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 24, 2007 |
| Grant date | Jan 13, 2009 |
| Priority date | — |
| Expiry date | Jul 24, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H9/061
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A trigger mechanism for an electric power tool, comprises a spring-loaded trigger movable between an foremost position and an rearmost position, an adjuster for adjusting the rearmost position, an electrical switch arranged for closing by the trigger while the trigger is in an intermediate position, and a variable resistor arranged for operation by the trigger while the trigger is in an intermediate position to provide a resistance having a value dependent upon the position of the trigger. A locking device is included for locking the trigger near the rearmost position, and which is movable in opposite directions and arranged to lock the trigger near the rearmost position when the locking device is moved in either one of opposite directions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.