Actuator mechanism for a high-voltage circuit breaker
US4968861A · kind A · utility
10Cited by
3References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 13, 1988 |
| Grant date | Nov 6, 1990 |
| Priority date | — |
| Expiry date | Dec 13, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/18824
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a stored-spring-energy type actuator mechanism for a high-voltage circuit breaker, energy is stored in a spiral spring in order to switch on the circuit breaker and also to load a switch-off spring of the circuit breaker. To store sufficient energy for more than one switch-on operation, a fluid-pressure accumulator is provided in which sufficient energy is stored to wind up the spiral ring at least one additional time through a fluid-pressure motor. Between the pressure accumulator and the motor is a control valve which opens when the spiral spring is partly unloaded, causing the hydraulic motor to rewind the spring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.