Molded case circuit breaker braid conductor with strain relief
US5126708A · kind A · utility
7Cited by
3References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 25, 1991 |
| Grant date | Jun 30, 1992 |
| Priority date | — |
| Expiry date | Jul 25, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H1/5822
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A molded case circuit interrupter of the type employing a thermal-magnetic trip unit to interrupt circuit current utilizes a flexible electrical braid conductor to connect between the thermal-magnetic trip unit and the movable contact arm. A helical spring arranged around the braid conductor at the welded connection with the movable contact arm provides long-term strain relief. A metal phosphate coating on the surface of the circuit breaker operating cradle and latch assembly eliminates polishing while insuring release of the cradle from the cradle-latch interface surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.