Load switch for a step switch
US6008456A · kind A · utility
4Cited by
1References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 11, 1998 |
| Grant date | Dec 28, 1999 |
| Priority date | — |
| Expiry date | Jun 11, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H9/0016
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A load switch has a housing, a pair of main contacts fixed in the housing, and a movable main contact pivotal on the housing between end positions in each of which it engages a respective one of the fixed contacts and through a middle position in which it engages neither of the fixed contacts. A central shaft extending along an axis and pivotal in both directions thereabout carries a cam having offset from the axis a cam formation. A mechanical link engaged between the cam formation and the movable contact can pivot it between its end positions and through its middle position on rotation of the cam about the axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.