Card – picture – or sign exhibiting – Changing exhibitor – Variable reading stationary exhibitor
Patent
1991-02-01
1992-09-15
Brittain, James R.
Card, picture, or sign exhibiting
Changing exhibitor
Variable reading stationary exhibitor
G03B 2502
Patent
active
051467038
ABSTRACT:
A lenticular or segmented sign for selectively viewing at least two separate images includes an image panel having at least two image fields subdivided into segments grouped in interleaved fields. A lens panel is provided by discrete and relatively movable lens elements carried on a facer panel, the lens elements including two or more lenses and being resiliently fixed to the facer panel at the top, adjacent lens elements being free to move relative to one another along their lengths. The lenses are preferably elongated vertical or horizontal strips attached to a transparent facer panel by hook or spring fasteners which engage in connectors by which adjacent lenses are attached together to form a lens element. The lens elements have spacer posts for positioning the lenses at the correct focal distance from the image strips. Compressible material or springs urge the lens elements laterally together, and as a unit the lens segments define a predetermined pitch notwithstanding manufacturing tolerances of the individual lenses. The pitch of the image segments is slightly larger than the pitch of the lenses, for allowing accurate viewing at close perspective. The lens panel is carried in a framing bracket which is adjustable to correct parallelism of the lenses relative to the image strips.
REFERENCES:
patent: 2371172 (1940-05-01), Hotchner
patent: 2507975 (1950-05-01), Hotchner
patent: 2514814 (1950-07-01), Towne
patent: 2833176 (1958-05-01), Ossoinak
patent: 3314179 (1967-04-01), Leach
patent: 3918185 (1975-11-01), Hasala
patent: 4255380 (1981-03-01), Bjorkland
patent: 4734037 (1988-03-01), McClure
Bonifanti J.
Brittain James R.
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