Projection screen anchor

Details Projection screen anchor Projection screen anchor

1982-12-13

1985-04-16

Hayes, Monroe H.

Supports

Pipe or cable

Extending through plate

2483094, 160DIG16, G03B 2156

Patent

active

045112118

ABSTRACT:
A projection screen having spaced apart lateral edges and opposite upper and lower ends that is mounted at its upper end by appropriate support means to a wall and which has a means for releasably magnetically securing the lower end of the screen to the wall. By securing the lower end of the screen to the wall while the upper end of the screen is spaced apart from the wall, the keystone effect that occurs when an overhead projector is used to upwardly project an image onto a vertically hanging screen is eliminated.

REFERENCES:
patent: 2604159 (1952-07-01), Wright
patent: 2643840 (1953-06-01), Lanman
patent: 2864096 (1958-12-01), Garber
patent: 3107361 (1963-10-01), Glutting
patent: 3205772 (1965-09-01), Guske
patent: 3251264 (1966-05-01), Jacobson
patent: 3942868 (1976-03-01), Hoffbauer et al.

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