Switch mechanism
US7332989B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 8, 2005 |
| Grant date | Feb 19, 2008 |
| Priority date | — |
| Expiry date | Mar 8, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2027/005
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A switch mechanism has at least one set of contacts including at least one fixed contact and at least one moveable contact which is carried by an axially moveable carrier that is held by a spring-loaded detent when the contacts are closed, the carrier being released with a force to overcome the latching mechanism when opening the contacts, and a cam member with at two cam profiles that is disposed adjacent one end of the carrier and is operable to pull the axially moveable carrier towards the cam and thereby pull the at least one moveable contact into engagement with the at least one fixed contact. In one embodiment, the cam may carry a permanent magnet which when moved attracts and draws with it a permanent magnet mounted fixedly with respect to the axially moveable carrier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.