Means for suppressing contact-separation at the end of a vacuum circuit-breaker closing operation
US4225763A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 23, 1978 |
| Grant date | Sep 30, 1980 |
| Priority date | — |
| Expiry date | Mar 23, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2033/6667
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A vacuum-type circuit breaker comprises (a) a plurality of vacuum circuit interrupters, (b) a common operating member through which closing force is applied to the movable contact rods of all the interrupters, (c) a wipe mechanism for each interrupter, and (d) a plurality of linkages, one for each interrupter, each being connected between the common operating member and the wipe mechanism for the associated interrupter. Each linkage comprises a plurality of pin joints connected mechanically in series between said common operating member and the associated wipe mechanism. Opening spring means effectively located at the movable contact rod end of each linkage that comprises at least three of said series connected pin joints applies a bias to said latter linkage that acts upon all of the pin joints in said latter linkage to eliminate from the acted-upon pin joints such clearance as allows reversal of the associated movable contact rod immediately following contact-engagement near the end of a closing operation while closing force is still being applied to said associated linkage through said common operating member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.