Miniature flashlight
US4942505A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 23, 1989 |
| Grant date | Jul 17, 1990 |
| Priority date | — |
| Expiry date | May 23, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2009/048
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A miniature flashlight comprises a barrel, a tail cap, a head assembly, and means for holding a miniature lamp bulb. The means for holding lamp bulb comprises an insulated receptacle disposed external to the end of the barrel to which the head assembly is engaged, a second insulated receptacle disposed within the barrel and matingly engaging with the first insulated receptacle so as to enable the first and second insulated receptacles to translate axially through a distance limited by a flange formed on the first insulated receptacle and an annular lip formed inwardly at the end of the barrel, and a pair of conductor members mounted in the second insulated receptacle such that one of the conductors serves to couple the center electrode of a dry cell battery to a first pin of the lamp bulb and the other conductor member serves to electrically couple the second pin of the lamp bulb to the lip formed on the barrel. A spring is disposed between the tail cap and the batteries within the barrel to urge the batteries into contact with the center conductor on the second insulated receptacle, thereby urging the second and the first insulated receptacles in the same direction until the secon…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.