Registry device for transparencies for overhead projector

Details Registry device for transparencies for overhead projector Registry device for transparencies for overhead projector

1986-07-01

1988-03-22

Frankfort, Charles

Optics: image projectors

Picture carrier

353122, 353DIG5, G03B 2154

Patent

active

047324686

ABSTRACT:
A registry device for transparencies for an overhead projector comprises a backbone with at least two projections for entering openings in a transparency to prevent it from moving; and, an adhesive-free anchoring sheet of plastic attached to the backbone. The anchoring sheet being of a material that will cling to the glass stage of a projector and prevent the registry device from sliding or being moved until the anchoring sheet is lifted from the glass. In a preferred embodiment a framing sheet also is attached to the backbone.

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patent: 4402585 (1983-09-01), Gardlund
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patent: 4608109 (1986-08-01), Pook

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