Vacuum interrupter latch release mechanism
US4161638A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 12, 1978 |
| Grant date | Jul 17, 1979 |
| Priority date | — |
| Expiry date | May 12, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H33/666
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A vacuum interrupter latch release mechanism employs a pivotably mounted trigger action arm in cooperation with a support arm assembly to resist the force of a main spring until the normally closed interrupter must be opened. Rotating the trigger action arm causes a catch on the trigger arm to become disengaged from an associated stop provided on the support arm assembly and allows the support arm assembly to pivot under the force of the main spring while being resisted by its weaker support spring. The rotation of the support arm is accelerated by the main spring. After a short stroke, an associated linkage impacts a stop on the vacuum interrupter which then becomes opened. The large force of the main spring causes virtually no wearing effect on the catch and stop faces over long periods of continuous operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.