Simple device for rapid damping of flywheel oscillations in a stored-energy operating device
US4156803A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 26, 1978 |
| Grant date | May 29, 1979 |
| Priority date | — |
| Expiry date | Apr 26, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2003/3078
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An operating device for an electric circuit breaker includes a closing spring and a rotatable spring-controller mounted for rotation between first and second dead center positions with respect to the spring. The spring is charged by transmitting rotational forces to the spring-controller. One end of a connecting link is pivotally connected to a point on the spring-controller which is eccentric with respect to the center of rotation of the spring-controller. Another end of the connecting link is connected to an operating mechanism of the circuit breaker. Circuit breaker closing is effected by allowing the spring to quickly discharge after a charging operation. Damping means is provided for imposing a damping load on the spring-controller substantially only after it has performed its useful work and is undergoing subsequent oscillations. The damping means causes the duration of the oscillations to be substantially reduced so that the spring-controller is rapidly brought to rest. In one embodiment, the damping means comprises a braking member coupled to the connecting link. In this embodiment, the braking member includes a L-shaped brake support member a portion of which is connected …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.