Illumination apparatus adjusting structure

Details Illumination apparatus adjusting structure Illumination apparatus adjusting structure

1991-01-03

1991-09-17

Lazarus, Ira S.

Illumination

Light source and modifier

Adjustable or repositionable light source or light source...

362287, 362413, 362428, 362401, 248124, F21V 2114

Patent

active

050500546

ABSTRACT:
An illumination apparatus adjusting structure, comprising an adjustable lamp support mounted on a stand for holding a lamp holder. The adjustable lamp support comprises an invertedly disposed U-shaped balance rack mounted on a stand for holding an adjusting ring, a lamp supporting rod and a steering rod. The lamp supporting rod and the steering rod have each an end respectively connected to the lamp holder through a steering shaft. The opposite end of the steering rod is connected to the U-shaped balance rack at a lower end. The opposite end of the lamp supporting rod is inserted through the adjusting ring and coupled with a hand-hold. The adjusting ring has two symmetrical openings on the face thereof for inserting the lamp supporting rod, a plurality of rough, ridged surface portions bilaterally disposed by said openings for engaging a clamp in place which is used for securing the lamp supporting rod in position, and a center shaft held by two symmetrical side plates and fastened between the two unitary, parallel posts of the U-shaped balance rack.

REFERENCES:
patent: 2041474 (1936-05-01), Kirschmann
patent: 3543019 (1970-11-01), Jacobsen
patent: 4772991 (1988-09-01), Wood
patent: 4847740 (1989-07-01), Laske
patent: 4892278 (1990-01-01), Huang
patent: 4928217 (1990-05-01), Laske
patent: 4974139 (1990-11-01), Chin-Song
patent: 4975815 (1990-12-01), Lin

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