Magnetorheological fluid damping with variable viscosity for circuit interrupter actuator
US11227729B1 · kind B1 · utility
2Cited by
10References
20Claims
0Family size
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Key dates
| Filing date | Nov 3, 2020 |
| Grant date | Jan 18, 2022 |
| Priority date | — |
| Expiry date | Nov 3, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H33/666
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A damping and latching mechanism for a Thomson coil-based actuator used to open and close the separable contacts of circuit interrupters in circuit breakers uses magnetorheological fluid to actively control the damping of opening and closing strokes in a circuit breaker in order to decrease wear and tear on components that can result from contact-based damping mechanisms and to maintain the open and closed states of separable contacts in the circuit breaker.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.