Illumination – Light source and modifier – Adjustable or repositionable light source or light source...
Patent
1984-06-08
1986-06-17
Lall, Parshotam S.
Illumination
Light source and modifier
Adjustable or repositionable light source or light source...
362418, 362427, 362430, F21V 2118
Patent
active
045959706
ABSTRACT:
A lamp for use with a recline chair, or like item of furniture includes a pedestal, a horizontally extending light fixture and a three-link parallelogram linkage supporting said fixture from said pedestal. The pedestal and fixture include parallel surfaces extending approximately 45.degree. to the horizontal in which the links are mounted with ball and socket joints. Two of the links extend beyond the ball joints and are interconnected by short transverse links. In the pedestal the connecting transverse link is connected to one or two tension coil springs balancing the light fixture in any position. The pedestal may support a cantilever table to serve as a side table for the furniture used with the lamp. The fixture may include a semi-cylindrical reflector with pivotal shades at each edge. The fixture is thus mounted and maintained in its horizontal position for adjustment throughout a spherical segment with the linkage moving within a right spherical cone, or from a horizontal to a vertical position, the axis of such cone thus extending at an angle of approximately 135.degree. to the vertical axis of the pedestal.
REFERENCES:
patent: 2608367 (1952-08-01), Boltuch
patent: 2910310 (1959-10-01), Mulac
patent: 3188460 (1965-06-01), Thorsen et al.
patent: 4165530 (1979-08-01), Sowden
patent: 4232357 (1980-11-01), Dietz
patent: 4455594 (1984-06-01), Yang
patent: 4494177 (1985-01-01), Matthews
Hauserman Inc.
Lall Parshotam S.
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