Anti-overload operating linkage for enclosed interlocked receptacle with safety switch or circuit breaker
US4506121A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 10, 1982 |
| Grant date | Mar 19, 1985 |
| Priority date | — |
| Expiry date | Nov 10, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/20006
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A force override compensating device as one component of the mechanical operating linkage in an electrical socket interlocked dead front safety switch or circuit breaker. Distinct input and output members urged into rigid relation with each other by a spring bias mechanism function as a solid link under normal circumstances. With the interlocking mechanism immobilized, the bias mechanism permits waste movement of the input member relative output member, if an attempt is made erroneously to activate the device using such force as would damage any of the immobilized linkage elements of the locked device. The bias mechanism reverse waste movement of the input member when the erroneously applied force is released. Three embodiments of the invention are described: slidably mounted input and output members preloading therebetween a compression spring; pivotally connected input and output members having an extension spring under tension resisting their pivoting; and rotationally secured input and output members being torsion spring biased therebetween.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.