Switch for electric power tool
US7638725B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 2009 |
| Grant date | Dec 29, 2009 |
| Priority date | — |
| Expiry date | Feb 24, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H9/061
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A switch for use with an electric power tool equipped with a trigger switch. The trigger switch has first contacts for turning on and off a motor, second contacts for turning on and off a speed controller, and a trigger lever. The first contacts are formed by a first fixed contact formed on a second conductive plate and a first movable contact formed on a swingable movable contact plate located opposite to the first fixed contact. The second contacts are formed by a second fixed contact and a second movable contact mounted opposite to the second fixed contact formed on a first conductive plate. The second movable contact is located around the front end of a slide plate slidably supported on the trigger lever. The second fixed contact and sliding plate portion are arranged parallel to the first fixed contact and the support member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.