Circuit breaker having improved movable crossbar and spring holder
US4137437A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 3, 1977 |
| Grant date | Jan 30, 1979 |
| Priority date | — |
| Expiry date | Jun 3, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2003/3094
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit breaker including stationary contact means and a plurality of movable contacts operable between open and closed positions with respect to the stationary contact means. A plurality of contact springs engages the movable contacts, and the contact springs increase the engagement pressure between the stationary contact means and movable contacts when the movable contacts are in the closed position. A contact carrier engages the movable contacts, and holds them such that the movable contacts operate together between the open and closed positions. A crossbar and spring holder is secured to the contact carrier and has a plurality of openings therein for holding the contact springs and an aperture therethrough through which is disposed a cross arm. The cross arm extends outwardly from the crossbar and spring holder, and moves upon movement of the crossbar and spring holder, the contact carrier and the movable contacts. Also included are means engaging the cross arm for effecting relative movement of the cross arm to move the movable contacts between the open and closed positions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.