Speed reducer for retractable screen systems

Details Speed reducer for retractable screen systems Speed reducer for retractable screen systems

2005-02-15

2005-02-15

Lev, Bruce A. (Department: 3634)

Flexible or portable closure, partition, or panel

Roll type

With brake or stop

C160S291000

Reexamination Certificate

active

06854505

ABSTRACT:
A retractable screen mechanism is disclosed for covering an opening. The retractable screen mechanism comprises two tracks mounted on opposing sides of the opening. A screen comprises a screen material mounted on a frame having two flexible opposing sides corresponding to and adapted to engage the two tracks. A spool mechanism extends between the flexible opposing sides and engages a third side of the frame. The screen winds up on the spool mechanism. The spool mechanism is biased to the wind up position. The spool mechanism has a speed reducer which comprises a resistance structure moving through a viscous fluid to reduce the speed of the biased screen when moving to the wind up position.

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