Portable electric lamp adjustable from spot beam to diffused bea

Details Portable electric lamp adjustable from spot beam to diffused bea Portable electric lamp adjustable from spot beam to diffused bea

1978-03-03

1980-07-22

Padgett, Benjamin R.

Illumination

Self powered lamp

Nonelectric

362109, 362166, 362240, 362277, F21L 2300

Patent

active

042142954

ABSTRACT:
A portable electric lamp including a body 1 mounting a lens 2, a lens holder 3, a reflector 5, and a bulb holder 6 is provided with a translucent diffuser sleeve 7 which has slots 8 which extend lengthwise thereof. The diffuser sleeve is coaxial with and surrounds the bulb holder and is associated with drive means 10-13 operable to effect axial movement of the diffuser sleeve relative to the bulb holder between a retracted position at which a bulb held in the bulb holder is arranged to direct a spot beam through the lens and a forward position at which light from the bulb is diffused by passage through the diffuser sleeve.

REFERENCES:
patent: 1335727 (1920-04-01), Eisele
patent: 1551901 (1925-09-01), Nase
patent: 2947854 (1960-08-01), Lozeau

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