Symmetric percussion switching device using a head point over-run device
US4841106A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 13, 1987 |
| Grant date | Jun 20, 1989 |
| Priority date | — |
| Expiry date | Aug 13, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2071/109
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A symmetric percussion switching device is provided using a bistable dead point over-run device including an actuator movable between at least two positions and a control member whose movement causes rocking of the actuator from one to other of the two positions, after passing through the dead point, said device further comprising two switches whose actuating members cooperate with the actuator, respectively in the fractions of the stroke thereof adjacent said positions, said switches then being actuated by percussion so that the drawbacks of the conventional switching devices of this kind are avoided in which the pressure of the mobile contact on the fixed contact is substantially zero in the vicinity of the dead point changeover.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.