Circuit breaker with increased electrical spacing
US4389555A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 5, 1982 |
| Grant date | Jun 21, 1983 |
| Priority date | — |
| Expiry date | Apr 5, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H9/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit breaker in which the case comprises two half-cases abutting together to jointly form the case. A handle link includes a handle with a portion extending through the half-cases. The half-cases have abutting, interfitting tongue and groove portions to increase the creepage and clearance distances from outside the circuit breaker to the closest electrically energized parts within the circuit breaker. Further the handle link and the half-cases have a pivotally semi-circular interfitting tongue and groove connection. The abutting, interfitting tongue and groove portions of the half-cases are disposed on both sides of said semi-circular connection and pivotally adjacent thereto so as to form a tongue and groove connection at the opening of the case through which the handle extends and on either side thereof. Also, the handle link has pintles pivotally extending into recesses provided therefor in the half-cases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.