Wave signal receiver monitoring apparatus

Claim 1

REMINDER APPARATUS FOR USE IN THE MONITORING OF AN AUTOMOBILE TYPE RADIO RECEIVER USED IN AUTOMOBILES HAVING THE CONVENTIONAL IGNITION SWITCH, COMPRISING AN ELAPSED TIME INDICATING DEVICE CONNECTED IN CIRCUIT WITH SAID RECEIVER SO AS TO BE ENERGIZED WHENEVER SAID RECEIVER IS ENERGIZED AND DEENERGIZED WHENEVER SAID RECEIVER IS DEENERGIZED, AN ELECTRICALLY ENERGIZABLE ALARM DEVICE CONNECTED IN CIRCUIT RELATIONSHIP WITH SAID RECEIVER AND SAID IGNITION SWITCH OF THE AUTOMOBILE IN WHICH SAID RECEIVER IS LOCATED, FIRST MEANS RESPONSIVE TO THE CLOSING OF SAID IGNITION SWITCH FOR RENDERING SAID ALARM INEFFECTIVE TO PROVIDE A REMINDER SIGNAL, AND SECOND RELAY MEANS RESPONSIVE TO THE ENERGIZATION OF SAID RECEIVER FOR RENDERING SAID ALARM DEVICE EFFECTIVE UPON OPENING OF SAID IGNITION SWITCH FOLLOWING A PERIOD SUBSEQUENT TO THE CLOSING OF SAID IGNITION SWITCH WHEN SAID RECEIVER HAD BEEN ENERGIZED, WHEREBY THE USER OF SAID RECEIVER IS REMINDED TO MAKE AN ENTRY IN A DIARY TO RECORD THE STATIONS TO WHICH SAID RECEIVER WAS TUNED DURING SAID PERIOD.