Holder for overhead projection system transparencies
OwnerEdward J. Joffeinventor
Life of this patent
Estimating the term…
Abstract
A holder for a plurality of overhead projection system transparencies includes a ruler-like bar provided with suction cups for attaching the bar to the stage of the projector and U-shaped arms for engaging the holes provided along one edge of each transparency. The rear legs of the arms are rotatably received in bosses provided along the rear edge of the bar and the front legs releasably engage posts at the front edge of the bar.
Claims8
A device for holding a plurality of overhead projection system transparencies which are provided with holes along one edge thereof and for positioning the transparencies on the stage of an overhead projector comprising:
- an elongated, straight edged ruler-like bar;
- two suction cups mounted on said bar at spaced intervals adjacent one of the principal edges thereof for affixing the holder to the stage of the projector;
- and a plurality of generally U-shaped arms, each arm having a first leg retained in a bore provided in said bar adjacent said one of said principal edges for rotation about the axis of said leg and a second leg the end of which is releasably received in an opening provided in said bar adjacent the other of said principal edges thereof in transverse alignment with said bore.
A device for holding a plurality of overhead projection system transparencies which are provided with holes along one edge thereof and for positioning the transparencies on the stage of an overhead projector comprising:
- an elongated, straight edged ruler-like bar having parallel front and rear edges;
- a plurality of U-shaped arms each having first and second legs, said first legs being connected to said bar for rotation about the axes of said first legs adjacent said rear edge thereof at locations corresponding to the holes in the transparencies, said second legs being releasably retained at points adjacent said front edge of said bar and in transverse alignment with the corresponding locations at which said first legs are retained;
- and
- means for releasably attaching said bar to the stage of the overhead projector.
Dependencies are inferred from the claim text.