Motorized barrier operator system utilizing multiple photo-eye safety system and methods for installing and using the same
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United States of America Patent
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Jun 12, 2007
Grant Date -
N/A
app pub date -
Jun 3, 2004
filing date -
Jun 3, 2004
priority date (Note) -
Expired
status (Latency Note)
Importance
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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Cited Art Landscape
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