Electrical safety apparatus
US5451730A · kind A · utility
11Cited by
5References
6Claims
0Family size
Inventor
Key dates
| Filing date | Aug 1, 1994 |
| Grant date | Sep 19, 1995 |
| Priority date | — |
| Expiry date | Aug 1, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/5739
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Safety apparatus for disconnecting overhead electrical switches for maintenance, comprising an insulated rod having an upper disconnect hook to engage a handle of a switch box and move it from an on position to an off position in which power is disconnected, an arm attached to the rod and cooperating with the hook to secure the switch handle in the off position, and a locking device connected to the arm and to the rod to prevent inadvertent movement of the switch handle to the on position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.