Transparency mount providing rotatable projection image

Details Transparency mount providing rotatable projection image Transparency mount providing rotatable projection image

1983-07-06

1985-10-22

Haroian, Harry N.

Optics: image projectors

Film gate

353120, G03B 148

Patent

active

045484864

ABSTRACT:
The specification discloses a slide mount which may be used in a conventional slide projector enabling the film transparency to be rotated during image projection. More particularly, the mount comprises a body to be stationarily supported in the projector and a film-supporting assembly rotatably supported by the body. The film-supporting assembly is engageable at one edge of the body by a rotatable driving mechanism. Preferably, the film-supporting assembly is registered against the body in a direction perpendicular to the film to provide critical focus for the film.

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patent: 2250297 (1941-07-01), Ditty et al.
patent: 2267649 (1941-12-01), Graves
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patent: 2960906 (1960-11-01), Fogel
patent: 2961922 (1960-11-01), Schwartz et al.
patent: 3072015 (1963-01-01), Thannhauser
patent: 3324765 (1967-06-01), Smith
patent: 3671115 (1972-06-01), Larkin
patent: 3843244 (1974-10-01), Facchini
patent: 3881814 (1975-05-01), Madison
patent: 4188101 (1980-02-01), Masuda

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