Structure of adjustable desk lamp

Details Structure of adjustable desk lamp Structure of adjustable desk lamp

1990-04-03

1990-11-27

Lazarus, Ira S.

Illumination

Light source and modifier

Adjustable or repositionable light source or light source...

362401, 362413, 362427, F21S 112, F21S 312

Patent

active

049741357

ABSTRACT:
A desk lamp, which includes a lamp shade structure comprised of a lamp shade, a sleeve set in the lamp shade, an adjusting rod having a thread portion on its upper end, and a lamp socket; a lamp bracket being to secure the lamp shade structure to a lamp stand and comprised of two parallel rods and upper, intermediate and lower union swivels; and a pendulum having stepped holes therethrough for the setting therein of screw rod, insulator ring and tubes, and lock nuts. Through the control of the sleeve, the lamp shade is allowed to rotate on the lamp bracket. Through the arrangement of the union swivels, the two parallel rods of the lamp bracket form to separate conductive circuits for conducting electricity. Through the lower union swivel, the lamp bracket is permitted to rotate on the lamp stand.

REFERENCES:
patent: 3790773 (1974-02-01), Sapper
patent: 4772991 (1988-09-01), Wood
patent: 4858092 (1989-08-01), Lu
patent: 4892278 (1990-01-01), Huang
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