Silencer for electric motion picture screens

Details Silencer for electric motion picture screens Silencer for electric motion picture screens

1978-05-22

1979-06-26

Wintercorn, Richard A.

Flexible or portable closure, partition, or panel

Fabric fastening means

To elongated element

160 24, 310 51, 310 91, G03B 2156, H02K 524

Patent

active

041591623

ABSTRACT:
This invention relates to electric projection screens to effect the coordinated shifting of the screen surface into and out of picture-projecting position of the type mounted in or to the ceiling or to the wall of a room and more particularly to a means to quiet the operation of the screen roller tube and its appendages during rotation of the roller tube.

REFERENCES:
patent: 3330515 (1967-07-01), Janssen et al.
patent: 3459978 (1969-08-01), Truck et al.
patent: 3463954 (1969-08-01), Latta
patent: 3527969 (1970-09-01), Papst
patent: 3546504 (1970-12-01), Janssen et al.
patent: 3942868 (1976-03-01), Hoffbauer et al.
patent: 4060310 (1977-11-01), Brown

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