Waterproof flashlight with finger switch
US4985812A · kind A · utility
Inventor
Key dates
| Filing date | Jul 20, 1989 |
| Grant date | Jan 15, 1991 |
| Priority date | — |
| Expiry date | Jul 20, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21L2/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A compact battery-powered flashlight adapted for underwater use which includes a casing, an illumination unit, a sealant device, a connection device and a switch element. The casing is hollow and substantially oval in cross-section while having a closed rear end and a head receiving forward end. The head receiving forward end of the casing has a hollow outwardly protruding cylindrical neck. The casing further is adapted to receive at least two parallel adjacent rows of batteries with at least one battery per row. The casing neck is axially aligned with one of the rows of received batteries. The illumination unit is mounted upon the neck and generates light upon electrical connection to the batteries. The sealant device is disposed between the illumination unit and the neck for providing a watertight seal therebetween. The connection device is used to electrically connect the illumination device to the batteries received within the casing. The switch element is used to selectively interrupt the electrical connection provided by the connection device between the illumination device and the batteries.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.