Ultrasonic position sensing equipment

Claim 1

AN ULTRASONIC APPARATUS FOR LOCATING THE POSITION OF A TARGET THROUGH THE USE OF A HIGHLY DIRECTIONAL ULTRASONIC SIGNAL REFLECTED FROM SAID TARGET COMPRISING: A TRANSMITTER FOR GENERATING AND EMITTING HIGHLY DIRECTIONAL ULTRASONIC SIGNALS ON A FIRST SIGNAL TRANSMISSION AXIS EXTENDING BETWEEN SAID TRANSMISSION AND SAID TARGET; A RECEIVER LOCATED ADJACENT SAID TRANSMITTER FOR DETECTING ULTRASONIC SIGNALS REFLECTED FORM SAID TARGET ON A SECOND SIGNAL TRANSMISSION AXIS EXTENDING BETWEEN SAID RECEIVER AND SAID TARGET, SAID SIGNALS EMITTED BY SAID TRANSMITTER AND REFLECTED FROM SAID TARGET BEING HIGHLY DIRECTIONAL ALONG SAID SECOND AXIS, SAID SECOND AXIS INTERSECTING SAID FIRST AXIS AT SAID TARGET; A DELAY CIRCUIT OPERATIVELY CONNECTED TO AND ENERGIZED BY SAID TRANSMITTER, SAID DELAY CIRCUIT BEING ENERGIZED SIMULTANEOUSLY WITH THE GENERATION OF A SIGNAL BY SAID TRANSMITTER, SAID DELAY CIRCUIT PROVIDING AN OUTPUT SIGNAL SUBSTANTIALLY AT THE TIME SAID RECEIVER DETECTS A SIGNAL ON SAID SECOND AXIS; AN OUTPUT MEANS; AND A GATE OPERATIVELY CONNECTED TO SAID DELAY CIRCUIT, SAID RECEIVER, AND SAID OUTPUT MEANS FOR ENERGIZING SAID OUTPUT MEANS UPON THE SIMULTANEOUS RECEPTION OF SIGNALS FROM SAID RECEIVER AND SAID DELAY CIRCUIT.