Detachable modular drive unit for projection screen apparatus

Details Detachable modular drive unit for projection screen apparatus Detachable modular drive unit for projection screen apparatus

1976-01-06

1977-11-29

Wintercorn, Richard A.

Flexible or portable closure, partition, or panel

Fabric fastening means

To elongated element

49324, 160310, G03B 2156, E06B 920

Patent

active

040603105

ABSTRACT:
A projection screen apparatus includes a modular screen unit and a separate modular drive motor unit generally forming an extension of the screen unit. The screen unit has an elongate roller and a flexible screen which is wound on the roller when it is in a closed position and unwound from the roller when it is in an exposed position. The drive unit is detachably secured adjacent the screen unit and has an electric motor releasably coupled to the roller to rotate the roller to move the screen between exposed and closed positions.

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