Portable ground fault circuit interrupting device
US4079344A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 1976 |
| Grant date | Mar 14, 1978 |
| Priority date | — |
| Expiry date | Aug 30, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H83/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A portable ground fault circuit interrupting (GFCI) device includes a housing equipped with two sets of back mounted contact blades or prongs for insertion in a conventional duplex wall receptacle. One set of contact blades conveys current from one socket of the wall receptacle to a known GFCI receptacle via a relay, both mounted within the housing. The other set of blades are dummy blades frictionally engaged in the other wall receptacle socket to reliably retain the portable GFCI device in place. The GFCI receptacle is accessible through a front opening in the housing for plug connection with circuits for which ground fault protection is afforded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.