Portable variable intensity signalling flashlight

Details Portable variable intensity signalling flashlight Portable variable intensity signalling flashlight

1976-01-15

1977-09-13

Caldwell, John W.

Communications: electrical

Systems

Portable self-contained

200252, 240 106SD, 240 1066, F21L 700

Patent

active

040486311

ABSTRACT:
This disclosure pertains to a manually operated hand held battery powered signalling flashlight adapted with two independently operable light sources, controlled by a common selector switch adapted to independently or concurrently energize each light source, and a dual acting variable resistor controlling the intensity of the light beams produced thereby. Each light source may project a different colored light beam.

REFERENCES:
patent: 1822619 (1931-09-01), Grossman
patent: 2498805 (1950-02-01), Gurevsky
patent: 2751490 (1956-06-01), Emerson
patent: 3030497 (1962-04-01), Cheng
patent: 3197757 (1965-07-01), Porta
patent: 3205487 (1965-09-01), Vriend
patent: 3800136 (1974-03-01), Edelson

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