Time delay circuit for briefly holding a selective call transmitter energized

• US 3,304,501 A
• Filed: 08/20/1964
• Issued: 02/14/1967
• Est. Priority Date: 08/20/1964
• Status: Expired due to Term

• Current Assignee: Ross E. Ruthenberg
• Original Assignee: Ross E. Ruthenberg
• Inventors: Ruthenberg, Ross E.
• Application Number:
  US04/390,867
• Time in Patent Office: 908 Days
• US Class Current: 455/127.1
• CPC Class Codes: H04W 88/027 using frequency address codes

Claims

7. A CONTROL SYSTEM FOR A TRANSMITTER WHICH INCLUDES A POWER SUPPLY FOR ENERGIZING THE TRANSMITTER, SAID CONTROL SYSTEM INCLUDING IN COMBINATION, ACTUATING MEANS PROVIDING A FIRST CONTROL POTENTIAL TO CONDITION THE TRANSMITTER FOR OPERATION, SAID ACTUATING MEANS BEING COUPLED TO THE POWER SUPPLY AND APPLYING SAID FIRST CONTROL POTENTIAL THERETO FOR CAUSING ENERGIZATION OF THE TRANSMITTER, AND DELAY MEANS COUPLED TO SAID ACTUATING MEANS AND INCLUDING A TRANSISTOR AND A SATURABLE TRANSFORMER FOR CONTROLLING CONDUCTION OF SAID TRANSISTOR, SAID SATURABLE TRANSFORMER INCLUDING A FIRST WINDING COUPLED TO SAID ACTUATING MEANS FOR RECEIVING SAID FIRST CONTROL POTENTIAL AND A SECOND WINDING COUPLED TO SAID TRANSISTOR, SAID SECOND WINDING APPLYING A VOLTAGE TO SAID TRANSISTOR FOR RENDERING THE SAME CONDUCTING TO PROVIDE A SECOND CONTROL POTENTIAL WHICH CONTINUES FOR A PREDETERMINED TIME DURATION IN RE-