Electrical adapter plug
US5131869A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 24, 1990 |
| Grant date | Jul 21, 1992 |
| Priority date | — |
| Expiry date | Sep 24, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01R13/68
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrical adapter plug having a body insertable into a mating socket sleeve of a vehicle lighter receptacle. The plug has a pair of ideally located circumferentially-spaced, retractable leaf-spring contacts projecting beyond the periphery of the plug body to establish improved retention and electrical contact between the adapter plug and the receptacle. The two contacts are preferably angularly spaced on the periphery of the plug at about 90.degree. and associated with projecting means located on the periphery of the plug body generally opposite the pair of contacts symetrically disposed on or about a line which bisects the space angle between the two contacts. An adapter plug fuse is retained in a socket defined by a fuse insert housed within a central cavity formed by the adapter plug. This fuse insert assists in holding two body halves together and also anchors the long leaf-spring contacts. The fuse insert enables the adapter plug body to be held together by a single fastening screw and locking fingers rather than cement, glue or welding. This screw and finger design permits repair of a defective plug which is not possible with cemented, glued or welded adapter-plug body se…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.