Screen assembly

Details Screen assembly Screen assembly

1976-08-03

1978-01-17

Griffin, Donald A.

Flexible or portable closure, partition, or panel

Fabric fastening means

To elongated element

160 24, 248324, G03B 2156, B42F 1300

Patent

active

040689212

ABSTRACT:
A screen assembly for projecting an optical image thereon has a screen unit of a type including a screen casing, a winding spindle housed within the screen casing, a screen sheet having one end secured to the winding spindle and the other end situated outside the screen casing, and a screen winder for automatically retracting the screen sheet, once drawn out of the screen casing, into the screen casing, and a screen suspending and tilting mechanism. The screen suspending and tilting mechanism has a suspending column by which the screen casing is supported from an overhead supporting structure, and a tilt angle adjusting mechanism for tilting the screen sheet substantially about the longitudinal axis of the screen casing for the purpose of correcting a linear distortion which may otherwise occur in the projected image if the relative position of the projector and the screen is incorrect.

REFERENCES:
patent: 1688010 (1928-10-01), Godske
patent: 1800627 (1931-04-01), Heck
patent: 2395303 (1946-02-01), Stableford
patent: 2479812 (1949-08-01), Cechmanek
patent: 3362671 (1968-01-01), Johnson
patent: 3592255 (1971-07-01), Potter et al.
patent: 3750995 (1973-08-01), Genger
patent: 3942868 (1976-03-01), Hoffbauer et al.

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