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US 7,248,174 B2Granted
Automatic sensing of safe-operation sensor apparatus and method
AssigneeThe Chamberlain Group, Inc.
InventorsRobert Study, Eric Robb, William Gioia, David Stafford
Life of this patent
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Abstract
A movable barrier operator having a microprocessor (10) or other programmable platform will automatically work in a safe and appropriate manner both with and without safe-operation sensors (13). Once a safe-operation sensor is detected, the operator will thereafter function in a fashion that requires the continued presence of such sensor. In one embodiment, the operator state can be purposely reset to the initial operating state.
Claims8
A movable barrier operator comprising:
- a movable barrier interface for implementing movement of a barrier;
- a controller having an obstacle detection input and being operatively coupled to the movable barrier interface for controlling movement of the barrier via the barrier movement interface and having at least a first and a second automatic mode of barrier movement, wherein:
- when the obstacle detection input is not operably coupled to at least one obstacle detector, the controller controls the movable barrier interface in accordance with the first automatic mode of barrier movement;
- and
- when the obstacle detection input is operably coupled to at least one obstacle detector, the controller controls the movable barrier interface in accordance with a second automatic mode of barrier movement.
2 more elements
Dependencies are inferred from the claim text.