Non-contact sensor system
First Claim
1. A non-contact sensor system that controls movement of a door moving in a first direction by actuation of a device, the sensor system comprising:
- (a) a transmitter extending a predetermined distance beyond a leading edge of the door at a first door end for transmitting a signal toward a second door end, said transmitter being attached to the door by a first moveable member, said first moveable member being capable of engaging a surface when the door closes and moving to a retracted position; and
(b) a receiver extending a predetermined distance beyond the leading edge of the door at the second door end in relative alignment with the transmitter for detecting the signal and for generating an output signal when the signal is blocked, said receiver being attached to the door by a second moveable member, said second moveable member being capable of engaging the surface when the door closes and moving to the retracted position, the output signal being suppressed when the second moveable member is in the retracted position.
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Accused Products
Abstract
A non-contact sensor system controls movement of a door moving in a first direction by actuation of a device. The system includes a transmitter extending a predetermined distance beyond a leading edge of the door at a first door end for transmitting a signal toward a second door end. The transmitter is attached to the door by a first movable member which is capable of engaging a surface when the door closes and moving to a retracted position. The sensor system further includes a receiver extending a predetermined distance beyond the leading edge of the door at the second end in alignment with the transmitter for detecting the signal, and for generating an output signal when the signal is blocked. The receiver is attached to the door by a second movable member which is capable of engaging the surface when the door closes and moving to the retracted position.
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Citations
9 Claims
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1. A non-contact sensor system that controls movement of a door moving in a first direction by actuation of a device, the sensor system comprising:
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(a) a transmitter extending a predetermined distance beyond a leading edge of the door at a first door end for transmitting a signal toward a second door end, said transmitter being attached to the door by a first moveable member, said first moveable member being capable of engaging a surface when the door closes and moving to a retracted position; and
(b) a receiver extending a predetermined distance beyond the leading edge of the door at the second door end in relative alignment with the transmitter for detecting the signal and for generating an output signal when the signal is blocked, said receiver being attached to the door by a second moveable member, said second moveable member being capable of engaging the surface when the door closes and moving to the retracted position, the output signal being suppressed when the second moveable member is in the retracted position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification