Ultrasonic signal generator

Claim 1

A PORTABLE HAND-HELD SIGNAL GENERATOR FOR USE IN A REMOTE CONTROL SYSTEM COMPRISING: MECHANICALLY EXCITABLE VIBRATOR MEANS; A SUPPORT MEMBER HAVING A GUIDE CHANNEL THEREIN, SAID GUIDE CHANNEL HAVING AN OPENING TERMINATING ADJACENT SAID VIBRATOR MEANS; A HAMMER SLIDABLY RECEIVED WITHIN SAID GUIDE CHANNEL; MEANS CAPTIVATING SAID HAMMER WITHIN SAID GUIDE CHANNEL; A SHAFT SECURED TO SAID SUPPORT MEMBER; STRIKER MEANS PIVOTALLY MOUNTED ON SAID SHAFT; SPRING BIAS MEANS ASSOCIATED WITH SAID STRIKER MEANS FOR URGING SAID STRIKER MEANS TOWARDS SAID HAMMER; ACTUATOR MEANS PIVOTALLY MOUNTED ON SAID SHAFT FOR ROTATING SAID STRIKER MEANS AGAINST THE URGING OF SAID SPRING BIAS MEANS; AND TRIP MEANS MOUNTED ON SAID ACTUATOR MEANS FOR RELEASING SAID STRIKER MEANS AFTER ROTATION OF THE LATTER THROUGH A PREDETERMINED ANGULAR DISPLACEMENT, THEREBY ALLOWING SAID SPRING BIAS MEANS TO ROTATE SAID STRIKER MEANS AND CAUSE SAID HAMMER TO BE PROPELLED THROUGH SAID GUIDE CHANNEL AND INTO CONTACT WITH SAID VIBRATOR MEANS FOR INITIATING VIBRATIONS THEREIN.