Flexible or portable closure – partition – or panel – Plural strip – slat – or panel type – With mounting or supporting means
Reexamination Certificate
2005-08-09
2005-08-09
Purol, David (Department: 3634)
Flexible or portable closure, partition, or panel
Plural strip, slat, or panel type
With mounting or supporting means
C160S193000, C049S200000
Reexamination Certificate
active
06926061
ABSTRACT:
A cable tensioner for an industrial door helps keep a cable neatly wrapped on its take-up drum. In some embodiments, the tensioner functions in a first mode during normal door operation, and operates in a second mode when the tension in the cable decreases to a predetermined low level. When operating in the second mode, the tensioner is able to take up slack in a cable that supports a door member, such as a door panel or a deadweight that counteracts the door panel's weight. The tensioner includes a shock absorber that resists a reaction force pulling on the tensioner when the tensioner is in the second mode. The tensioner may be adapted for use on various doors including, but not limited to, sectional doors, roll-up doors, high-lift doors, horizontally storing doors, vertically storing doors, and various combinations thereof.
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Hanley Flight & Zimmerman, LLC.
Purol David
Rite-Hite Holding Corporation
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