Circuit breaker contact wipe indicator
US5095293A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1990 |
| Grant date | Mar 10, 1992 |
| Priority date | — |
| Expiry date | Nov 30, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H33/66
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A visually inspectable indicator for a circuit breaker interrupter apparatus is provided. The visual indicator is located on a portion of the contact wipe assembly of an operating rod assembly of a circuit breaker to provide a reading of relative movement between components of the contact wipe assembly. This reading is related to integrity of the contacts. In a preferred embodiment, the indicator is a T-shaped cut out which is positioned and dimensioned such that it provides a reading relating to compression of the contact spring of the operating rod assembly when the assembly and the circuit breaker contacts are in the closed position which, in turn, provides an indication of the condition of the contacts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.