Illumination – Light source and modifier – Tiltable or rotatable as a unit
Patent
1989-11-15
1990-06-19
Husar, Stephen F.
Illumination
Light source and modifier
Tiltable or rotatable as a unit
362 61, 362220, 362250, 362419, F21V 2100
Patent
active
049358545
ABSTRACT:
A portable utility lamp has a rectangular frame provided with a plurality of wheels for movement across a floor surface. A plurality of vertically extensible posts are mounted on the frame and rotatably support a lamp housing. A pair of frictional clamping disks are forced into abutment by manually tightened clamping nuts to secure the rotatable housing in an adjusted position. The center of mass of the lamp housing is disposed on the longitudinal axis of the clamping bolts to provide a balanced weight distribution which allows adjustment of the lamp housing with a minimum of effort. The extensible posts each include a tubular stationary member having an extensible member received for sliding movement therein. A coil spring biases the extensible member upwardly, and a retaining pin is receivable through one of a plurality of spaced apertures provided in the extensible member to retain the lamp housing at a selected elevation. The utility lamp is particularly adapted for illuminating the undercarriage of a vehicle raised on a garage lift, and for a variety of other diverse uses.
REFERENCES:
patent: 2215531 (1940-09-01), Pieper
patent: 2553094 (1951-05-01), Jarett et al.
patent: 3008742 (1961-11-01), Goldstein
patent: 3535509 (1970-10-01), Thornton
patent: 3670156 (1972-06-01), Schmidt
patent: 4200903 (1980-04-01), Koenig et al.
patent: 4658337 (1987-04-01), Burke
patent: 4803606 (1989-02-01), Rotter
Husar Stephen F.
Kearns Jerry T.
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