Trigger operated tool handle switch
US4379214A · kind A · utility
3Cited by
7References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 28, 1981 |
| Grant date | Apr 5, 1983 |
| Priority date | — |
| Expiry date | Dec 28, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H13/08
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric switch mechanism for portable electric motor drive type tools having a reciprocable contact carrier and a movable electrically conductive bridging contact carried by the contact carrier for making and breaking electrical contact with coacting stationary contacts in the switch mechanism. The bridging contact has a protuberance at each point of contact with the contact carrier to ensure that such contact therebetween at each such point is always at the same spot(s) on the bridging contact when the bridging contact is reciprocated by the contact carrier in either direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.