Arcing contact for a high current switch
US4002870A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 18, 1974 |
| Grant date | Jan 11, 1977 |
| Priority date | — |
| Expiry date | Jul 18, 1994 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H1/5822
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An arcing contact for a high current capacity switch having a pair of switch members in sliding face-to-face engagement is formed from a set of resilient laminations that shunt the switch members as the switch makes on closing or breaks on opening. One end of the set of laminations is mounted on a face of one of the switch members, usually a blade, and the other end of the set of laminations is angled so that the end surfaces or tips bear against a face of the other switch member, usually a termination, when the arcing contact shunts the switch members. While in this position, a deflection of the laminations develops a spring force that urges the tips of the laminations into contact with the termination. The tips are inwardly bevelled with respect to the face of the termination and lie in a common plane so that during electrical connection they are in a substantially parallel relationship with the face of the termination, at substantially the same pressure. In a preferred form, the arcing contact has two or more sets of laminations that overlie one another in a spaced apart relationship. The free end of each of the sets is divided into a plurality of longitudinally extending finger…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.