Projection screen

Details Projection screen Projection screen

1975-06-30

1977-05-10

Wintercorn, Richard A.

40155, 350125, G03B 2156

Patent

active

040225224

ABSTRACT:
A tailored membrane supported solely by a peripheral frame forms the front panel of a chamber. A source of vacuum or an air blower maintains a pressure in the chamber which differs from that of the ambient atmosphere. As a result, the tailored membrane is either drawn forward or pushed taut to provide a concave or convex viewing surface having a configuration determined solely by its tailoring.

REFERENCES:
patent: 2753818 (1956-07-01), Green
patent: 3720455 (1973-03-01), Sahlin

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