Multiple circuit switch with rockable activator and linearly movable contact holder
US4942273A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 12, 1989 |
| Grant date | Jul 17, 1990 |
| Priority date | — |
| Expiry date | Apr 12, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H19/635
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A switch apparatus comprises an arm which is rotated by a rotational force added to an operation knob and thus linearly drives a contact holder through an engagement portion so as to change over contacts points. The engagement portion is received in a groove formed in the contact holder and has surfaces which hold the center line in the radial direction of the arm, each surface having a circular arc form with a center substantially in the same place at a position equi-distance on either side of the center line so that the change in movement of the contact holder with the change in rotational angle of the arm is substantially constant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.