Automatic gate operator
First Claim
Patent Images
1. A movable barrier operator comprising:
- a controller responsive to signals at one or more input terminals for controlling the movement of a barrier;
a first input terminal;
a first safety apparatus for applying a first safety signal to the first input terminal;
a second safety apparatus for applying a second safety signal different than the first safety signal to the first input terminal; and
the controller responds to an input signal at the first input terminal by determining whether the input signal is a first safety signal or a second safety signal and performs in accordance with a first safety procedure when the input signal is a first safety signal and performs in accordance with a second safety procedure, different from the first safety procedure, when the input signal is a second safety signal.
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Abstract
A barrier movement operator is having a position sensor in a telescoping barrier control arm is described. A controller, remote from the arm, senses the barrier position to identify limits of barrier travel and to control rate of travel of the barrier between limits. The operator includes both optical and edge sensor obstruction detectors and is responsive to wireless communication for receiving user initiated command signals.
92 Citations
8 Claims
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1. A movable barrier operator comprising:
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a controller responsive to signals at one or more input terminals for controlling the movement of a barrier; a first input terminal; a first safety apparatus for applying a first safety signal to the first input terminal; a second safety apparatus for applying a second safety signal different than the first safety signal to the first input terminal; and the controller responds to an input signal at the first input terminal by determining whether the input signal is a first safety signal or a second safety signal and performs in accordance with a first safety procedure when the input signal is a first safety signal and performs in accordance with a second safety procedure, different from the first safety procedure, when the input signal is a second safety signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification