Flexible or portable closure – partition – or panel – Roll type – With guides or fabric edge holders
Patent
1993-11-12
1996-01-09
Purol, David M.
Flexible or portable closure, partition, or panel
Roll type
With guides or fabric edge holders
E06B 917
Patent
active
054821045
ABSTRACT:
A damage minimizing closure door that is moved vertically between open and closed positions in which the door is a flexible curtain and a guide assembly is mounted on the side edges of the doorway for receiving and guiding the side edges of the flexible door during vertical movement. A counterbalancing power spring is associated with the door to assist in raising and lowering the curtain. The flexible door or curtain and the guide assembly include unique features which enable the side edges of the curtain to move vertically in the guide assembly, resist wind forces and air pressure differentials when the door is closed or moving vertically and to separate from the guide assembly upon being impacted by an externally applied force, such as by a vehicle, with little if any damage occurring to the curtain or guide assembly.
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