Miniature flashlight and key chain
US6679616B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 7, 2001 |
| Grant date | Jan 20, 2004 |
| Priority date | — |
| Expiry date | May 7, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21V23/0414
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Flashlight activated by external pressure on one end of its casing to energize the lamp. The flashlight includes a casing for holding a battery and the contact portion a lamp, a front cap positioned on the front of the casing to secure the lamp protruding through an aperture, and a rear cap made of resilient material. A resilient spacer is positioned within the casing, intermediate the lamp and the battery to retain these two components out of contact in the nonilluminated state. External depression of the resilient rear cap urges the battery forward and the resilient spacer compressed to allow contact between the battery and base of the lamp. Contact wire electrically connects the lamp and battery to complete a circuit. Release of the rear cap allows the resilient spacer to expand, breaking contact between the battery and lamp, to turn off the flashlight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.