Flexible or portable closure – partition – or panel – Plural and/or with rigid closure – Diverse types
Patent
1994-10-05
1996-08-13
Purol, David M.
Flexible or portable closure, partition, or panel
Plural and/or with rigid closure
Diverse types
160313, 1603231, A47H 100
Patent
active
055446892
ABSTRACT:
A window attachment screen system using a roller screen assembly provides out of view storage of a screen material (16). The screen material (16) is attached to the sash (44) of a double hung or similar window. Operation of the screen material (16) is caused by movement of the window. The roller screen assembly utilizes a constant force spring (34) which resists increases in the torsional loading force.
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Johnson David George
Purol David M.
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