Reversing switch
US4808775A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 3, 1987 |
| Grant date | Feb 28, 1989 |
| Priority date | — |
| Expiry date | Aug 3, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2300/01
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a reversing switch comprising a substantially V-shaped swinging contact plate provided with a normally open movable contact and a normally closed movable contact, a pair of fixed contacts provided in opposed relationship to the normally open movable contact and the normally closed movable contact, an intermediate supporting member for supporting a normally open contact side of a central bent portion of the swinging contact plate, and a knob adapted to be swung and slid on the swinging contact plate; the improvement is characterized in that the swinging contact plate is formed of an elastic material, and that the knob is provided at its end portion with a pressing member adapted to elastically deform the swinging contact plate. With this arrangement, the swinging contact plate is elastically deformed by the pressing member in association with the swinging motion of the knob, thereby wiping off a bad conductor present between the movable contact and the fixed contact.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.