Drawer type circuit breaker with drawer contacts biased against contact arcuate portions and external connection terminals
US5837950A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 15, 1997 |
| Grant date | Nov 17, 1998 |
| Priority date | — |
| Expiry date | Jul 15, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02B11/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a drawer type circuit breaker of the invention, when a first contact is clockwise pivoted by a switching mechanism, the contact tip of the first contact and the contact tip of a second contact are touched, and when the first contact is further clockwise pivoted, the second contact is counterclockwise pivoted against the elastic force of a spring to secure a predetermined contact pressure and a predetermined wiping stroke. A first drawer contact clamps the outer circumferential portion of the first contact and a first external connection terminal together by the elastic force of a spring to establish connection between the first contact and the first external connection terminal. A second drawer contact clamps the outer circumferential portion of the second contact and a second external connection terminal together by the elastic force of another spring to establish connection between the second contact and the second external connection terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.