Handle block for electrical switching device
US5290979A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 19, 1993 |
| Grant date | Mar 1, 1994 |
| Priority date | — |
| Expiry date | Apr 19, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H9/286
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A molded generally planar U-shaped plastic member has a pair of lateral projections on one leg and a single lateral projection at a distal end of the other leg, which projections are received in recesses in mutually facing surfaces of a raised escutcheon rib surrounding a handle opening to locate the base of the U-shaped member in the path of the handle, blocking movement of the handle. A notch in the distal end of the leg having the single lateral projection receives a flat-bladed tool which is twistable against the escutcheon rib surface to deflect the leg inward and projection free of the respective recess to release the handle block. The recesses are symmetrically arranged to permit the handle block to be installed to block the handle ON or OFF as desired.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.