Switch actuator
US4965420A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 21, 1989 |
| Grant date | Oct 23, 1990 |
| Priority date | — |
| Expiry date | Sep 21, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H13/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A switch actuator includes a base and a plunger mounted for movement on the base. An electrical contact is mounted for relative movement on the base to establish an electrical connection. An actuator includes a head portion and a pair of spring arms. The spring arms extend into a bore in the plunger for frictionally grasping the plunger by spring biased forces against the interior walls of the bore. The actuator has a head portion exposed from an open end of the plunger bore for effecting movement of the electrical contact to alter the state of the electrical connection. The frictional engagement between the spring arms and the plunger provide overtravel or relative movement therebetween and the affect of the spring arms substantially eliminates any affect from wear between the plunger and the actuator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.