Circuit breaker
US7777601B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 10, 2006 |
| Grant date | Aug 17, 2010 |
| Priority date | — |
| Expiry date | Nov 17, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H71/528
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A movable contacting device in a circuit breaker comprises: a crossbar linked with the opening/closing mechanism and carried so as to pivot cooperatively with the opening/closing mechanism; a movable contact arm engaged, so as to cooperational with the crossbar, with a shaft fitted into a mutually opposing recesses in the crossbar; and a movable contact arm support fixed to the case accomodating the opening/closing mechanism and having mutually opposing through-holes through which the shaft is passed; and the movable contact being configured so that the movable contact slides between surfaces of movable contact arm support having the mutually opposing through-holes; and the construction of a single-pole portion of the movable contact arm is constituted by arranging in parallel two movable contact arm members each having a movable contact at one end, and in a shaft-supporting portion at the other end, an elastic member is sandwiched between the two movable contact arm members. With this arrangement, circuit breakers provided with a movable contacting device that is small in size and stable in contact resistance can be made available.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.