Electrical adapter plug
US4988315A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 21, 1990 |
| Grant date | Jan 29, 1991 |
| Priority date | — |
| Expiry date | Feb 21, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01R24/58
- 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 features a pair of ideally located circumferentially-spaced, retractable 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 in the range of about 20.degree. to 150.degree.. Means are located on the periphery of the plug body generally opposite the pair of contacts symmetrically disposed on or about a line which bisects the space angle between the two contacts. Three different embodiments of these means are shown, namely, a groove, a flat surface, and an elongated deformation. All of these embodiments cooperate with the spaced contacts to improve retention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.