Variable light beam flashlight
US5138537A · kind A · utility
37Cited by
3References
5Claims
0Family size
Inventor
Key dates
| Filing date | Oct 28, 1991 |
| Grant date | Aug 11, 1992 |
| Priority date | — |
| Expiry date | Oct 28, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21V14/045
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A flashlight including a tube for receiving a battery, a control ferrule threadedly engaged on the upper end of the tube, a face cap and a reflector engaged on an upper end of the control ferrule, a sleeve and a socket engaged in the upper end of the tube for receiving a light bulb, a ring engaged in the sleeve and electrically connected to the upper end of the tube, the light bulb including an annular flange connected to the ring and being caused to move relative to the reflector when the control ferrule is rotated relative to the tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.