Circuit interrupter including low friction latch
US4119935A · kind A · utility
4Cited by
2References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 20, 1976 |
| Grant date | Oct 10, 1978 |
| Priority date | — |
| Expiry date | Oct 20, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2071/508
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit interrupter including a releasable latch restrained by a stamped metal rotatable cam having a latching surface in sliding contact with the latch member. The rotatable cam is inclined at an angle to the axis of rotation so as to cause only the smooth portion of the latching surface produced by the shearing action of the stamping process to contact the latch member. The rough portion of the latching surface produced by tearing action of the stamping process is not in contact with the latch member, thereby eliminating the need for a machining operation to provide a low friction contact surface with the latch member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.