OVERHEAD DOOR SPRING ALERT SAFETY SYSTEM
First Claim
Patent Images
1. A safety system for overhead garage and like door structures having a counterbalance spring structure including one or more coil springs comprising:
- devices for detecting the breaking of a door counterbalance spring and alerting an operator to a spring failure event.
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Abstract
A safety system for overhead garage and like door structures having a counterbalance spring structure including one or more coil springs, which comprises devices for detecting the breaking of a door counterbalance spring and alerting a human operator to a spring failure. The system may include communication capabilities for remote notification of the fault and other information, and may include devices for preventing operation of a motorized door opener until the fault is cleared.
36 Citations
11 Claims
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1. A safety system for overhead garage and like door structures having a counterbalance spring structure including one or more coil springs comprising:
devices for detecting the breaking of a door counterbalance spring and alerting an operator to a spring failure event.
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2. A safety system for overhead garage and like door structures having a counterbalance spring structure including one or more coil springs comprising:
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one or more sensors for detecting the energy released by the breaking of a door counterbalance spring; and a control circuit sensitive to said sensors for alerting a human operator to a spring failure event.
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3. A safety system for overhead garage and like door structures having a counterbalance spring structure including one or more coil springs comprising:
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one or more electronic sensors that detect the energy suddenly released by the breaking of a door counterbalance spring; and an electronic control circuit sensitive to said sensors that enables an alert function to notify a human operator of a spring failure event. - View Dependent Claims (4, 5, 6, 7, 8, 9)
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10. A method for detecting the breaking of a counterbalance spring of an overhead door structure comprising:
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one or more sensors located at or near said spring that detect the energy released by the breaking of said spring; and a control circuit sensitive to said sensors that alerts a human operator to a spring failure event.
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11. A method for detecting the breaking of a counterbalance spring of an overhead door structure comprising:
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one or more electronic sensors located at or near said spring that detect the energy suddenly released by the breaking of said spring; and an electronic control circuit sensitive to said sensors that enables an alert function that notifies a human operator of a spring failure event.
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Specification