Safety power receptacle
US4995017A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 4, 1989 |
| Grant date | Feb 19, 1991 |
| Priority date | — |
| Expiry date | Aug 4, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01R13/66
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Safety power outlet connected to a plurality of power lines, including a hot line, and arranged to receive the prongs of a matching multipronged power plug has a receive terminal connected to each power line. The receive terminal is arranged to receive a corresponding prong of the power plug which upon insertion into the terminal operates a switch associated with each terminal. All switches are connected in series, and upon complete insertion of all the prongs, the series connected switches complete a power connection from the hot line to its respective prong, which in turn provides power to the external circuit connected to the power plug.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.