Importance

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Abstract

An improved door edge safety sensor for use with an automatic door operator which uses a motor to move a door between open and closed conditions with a controller for controlling operation of the motor and, an improved sensor comprising a tactile obstruction detector for generating a safety signal, a door vibration detector for detecting movement of the door, a safety signal transmitter operable in response to detected door motion, and control electronics which monitor the obstruction detector and the vibration detector and direct the signal transmitter to reverse the motor upon the door engaging an obstruction which reverses the door to an upward direction.

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First Claim