Changeable image display device

Card – picture – or sign exhibiting – Changing exhibitor – Interchangeable plate

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Details

4012409, 40445, 40491, 116321, G09F 1900

Patent

active

060619384

ABSTRACT:
A changeable image display device that has a front panel and a back panel forming an envelope open at one end. The front panel has first and second spaced windows and the back panel has a first image thereon in alignment with the first window of the front panel. A stationary transparency is fixed between the front and back panels and has second and third visual images thereon. A slidable V-shaped insert in the device moves between recessed and retracted positions and has first and second legs straddling the stationary transparency. A third window in the first leg of the V-shaped insert exposes the second visual image in the recessed position and exposes the third visual image in the retracted position. The second leg of the V-shaped insert covers the first visual image in the recessed position and exposes the first visual image in combination with the second visual image in the retracted position.

REFERENCES:
patent: 418135 (1889-12-01), Kaufmann
patent: 946407 (1910-01-01), Spiegel
patent: 1658968 (1928-02-01), Carroll
patent: 2359195 (1944-09-01), Berliner et al.
patent: 2367967 (1945-01-01), Schwartz
patent: 2611201 (1952-09-01), Bellis
patent: 2988845 (1961-06-01), MacDougall et al.
patent: 3848348 (1974-11-01), Hawley
patent: 4233768 (1980-11-01), Bromberg
patent: 4697364 (1987-10-01), Dean

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