Horizontally supported planar surfaces – With illumination means
Patent
1982-09-16
1984-08-28
Zugel, Francis K.
Horizontally supported planar surfaces
With illumination means
248456, 108 9, A47B 8500
Patent
active
044677278
ABSTRACT:
Provided is a collapsible, easily cleaned, flat folding, storable, lightweight, readily portable and adjustable artist's light box apparatus. The apparatus has a base plate which serves as the foundational structure plate. It has an upper transparent plate or organic plastics material in spaced relationship over the base plate. Hinge means adjacent forward portions of the side edges of the transparent plate and base plate provides for pivotal elevational tilting of the transparent plate above the base plate. An adjustable means is provided for temporarily locking the transparent plate at any of a multiplicity of preselected tilt angles with respect to the base plate. The bottom of the base plate is provided with friction means for anti-slip temporary resting of the base plate on a planar surface. Snap closure means is provided for temporarily locking the transparent plate in folded relationship to the base plate for storage or portability of the apparatus. The total thickness of the apparatus is no greater than about one inch when the transparent plate is temporarily locked in folded relationship to the base plate.
REFERENCES:
patent: 388158 (1888-08-01), Thompson
patent: 472099 (1892-04-01), Wyns
patent: 1203659 (1916-11-01), Smith
patent: 1490917 (1924-04-01), Finkelstein
patent: 2219091 (1940-10-01), Henderson
patent: 2563671 (1951-08-01), Basinger
patent: 3104492 (1963-09-01), Banks
patent: 3163939 (1965-01-01), Heyer
Baker Robert C.
Zugel Francis K.
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