Illumination – Self powered lamp – With movable focusing element
Patent
1983-10-19
1985-04-09
Nelson, Peter A.
Illumination
Self powered lamp
With movable focusing element
362191, 362193, 362 72, 362197, 362285, 362368, 362375, 362296, 362310, 313281, F21L 900
Patent
active
045105570
ABSTRACT:
A headlamp device for bicycles and like vehicles, which includes a reflector, a bulb having its end fixedly inserted through an opening formed in said reflector, an illumination covering mounted on the front face of said reflector, and a battery casing attached integrally to the rear portions of these members. The improvement comprises an outwardly extending locking piece affixed to said end of said bulb, a cylindrical extension for the insertion of said end of said bulb provided to the rear edge of said opening in said reflector, and the rear periphery of said cylindrical extension being stepped to define locking portions differing in axial length, said locking portions being engaged within said locking piece, whereby, when said bulb is fixedly inserted into said opening in said reflector, said locking piece can selectively be locked onto said locking portions differing in axial length.
REFERENCES:
patent: 3473072 (1969-10-01), Ivanov et al.
patent: 3736456 (1973-05-01), Middlehoek et al.
patent: 3875397 (1975-04-01), Nicholl
patent: 4388673 (1983-06-01), Maglica
Nelson Peter A.
Tsuyama Mfg. Co., Ltd.
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