Miniature flashlight
US4658336A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 11, 1986 |
| Grant date | Apr 14, 1987 |
| Priority date | — |
| Expiry date | Feb 11, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2009/048
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A miniature flashlight comprising a barrel, tail cap, head assembly, and bulb holder providing interruptible contact to batteries within the barrel. The bulb holder comprises an insulated receptacle external to the barrel end engaging the head assembly, a second insulated receptacle within the barrel engaging the first receptacle enabling both receptacles to translate axially, limited by a flange on the first receptacle and an annular lip formed inwardly at the barrel end, a pair of conductors mounted in the second receptacle couple one conductor with the center electrode of a battery with the first bulb pin and the other conductor with the second bulb pin to the barrel lip. A spring fits between the tail cap and the batteries. The circuit is closed by the barrel, tail cap, and spring coupling the second lamp pin to the battery case terminal. Threading the head assembly onto the barrel causes head assembly translation towards the tail cap and moves the reflector relative to the bulb, varying dispersion of the reflected lamp beam. Further rotation of the head assembly contacts the reflector with the first receptacle, translating both receptacles and the batteries against the spring,…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.