Handle attachment, assist mechanism therefor, and electrical switching apparatus employing the same
US7186933B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 12, 2005 |
| Grant date | Mar 6, 2007 |
| Priority date | — |
| Expiry date | May 12, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2071/565
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An assist mechanism is for a handle attachment of a circuit breaker having a housing with an operating member operable among a plurality of positions. The handle attachment includes a casing coupled to the circuit breaker housing and enclosing an actuating assembly which interconnects the circuit breaker operating member with a handle that is operable from the exterior of the casing. The assist mechanism is a wave spring having a first end coupled to the casing, and a second end having a wave bend that divides the second end into three sections having three corresponding tangential vector forces. The tangential vector forces provide a bias to the actuating assembly of the handle attachment that differs depending on the position of the circuit breaker operating member. In this manner, the assist mechanism augments energy generated by movement of the operating member and translates it into a corresponding handle attachment movement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.