Lighting device with dynamic bulb position
US4339788A · kind A · utility
125Cited by
1References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 15, 1980 |
| Grant date | Jul 13, 1982 |
| Priority date | — |
| Expiry date | Aug 15, 2000 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21L4/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A portable, self-contained lighting device with improvements in bulb positioning, switching, and electrical contact wherein PA0 (a) the bulb position changes axially depending on the presence or absence of the power source; PA0 (b) the rotating switch is positioned essentially directly above the bulb; and PA0 (c) the electrical contact strip is preloaded against the switch assembly in the "off" position and has an over-travel capacity of up to about 50% with a compensating flexible knee capable of changing by up to about 40.degree..
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.