Flexible or portable closure – partition – or panel – Plural strip – slat – or panel type – With mounting or supporting means
Reexamination Certificate
2007-06-12
2007-06-12
Thompson, II, Hugh B. (Department: 3634)
Flexible or portable closure, partition, or panel
Plural strip, slat, or panel type
With mounting or supporting means
C160S201000, C160S310000, C049S199000, C049S026000, C318S272000, C318S466000
Reexamination Certificate
active
10860439
ABSTRACT:
A movable barrier operator system includes a motorized operator which moves a barrier between limit positions, and a photo-electric safety system connected to the motorized operator. The photo-electric safety system monitors for obstructions at more than one height along the barrier's path between limit positions. This is done by installing a supplemental photo-electric safety system to work in conjunction with a pre-existing photo-electric safety system connected to the motorized barrier operator.
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Bradford Candace
Renner Kenner Greive Bobak Taylor & Weber
Thompson II Hugh B.
Wayne-Dalton Corp.
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