Operator of a handle or toggle of a switch
US5475190A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 1994 |
| Grant date | Dec 12, 1995 |
| Priority date | — |
| Expiry date | Apr 15, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2300/018
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A powered mechanism displaces the toggle, handle or similar operator of a switch such as a circuit breaker, motor contactor or transfer switch. A linear induction motor drives a motor shaft between extended and retracted positions. A pair of S-shaped cam members pivot at one end on an axis, and a sliding pin carried on the end of the motor shaft rides along slots in the cam members. A couple engages over the switch operator and is pivotally attached to links that in turn are pivotally attached to the cam members, The links attach to the cam members at a point closer to the pivot axis of the cam member than the sliding pin in the slots, thus obtaining leverage. The slots have an inclined or curved section joined to a straight section. The straight section provides an idling action in that no force is applied to the operator via the couple as the sliding pin passes through the straight section, allowing the motor to accelerate unopposed. When the sliding pin is in the inclined or curved section, displacement of the motor shaft moves the couple, and therefore the switch operator handle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.