Radio alarm system having preselected code sequences

• US 3,230,454 A
• Filed: 07/03/1963
• Issued: 01/18/1966
• Est. Priority Date: 07/03/1963
• Status: Expired due to Term

• Current Assignee: Burkleo Glenn G Van
• Original Assignee: Burkleo Glenn G Van
• Inventors: BURKLEO GLENN G VAN
• Application Number:
  US04/292,544
• Time in Patent Office: 930 Days
• US Class Current: 375/311
• CPC Class Codes: G08B 25/10 using wireless transmission systems G08B25/009 takes precedence

Claims

5. APPARATUS FOR ACTUATING A RADIO TRANSMITTER KEYING MEANS RESPONSIVE TO ALARM CONDITIONS, COMPRISING:

ELECTRICAL TERMINAL MEANS FOR CONNECTION TO THE RADIO TRANSMITTER KEYING MEANS;

ELECTRICAL SUPPLY MEANS FOR SUPPLYING ELECTRICAL CURRENT;

ELECTRICAL MOTOR MEANS, AND A PLURALITY OF DIFFERENTLY CODED CAM WHEELS CONNECTED THERETO FOR ROTATION THEREBY;

A PLURALITY OF FIRST CONTACT MEANS INDIVIDUALLY CONNECTED TO SAID CAM WHEELS FOR CLOSURE THEREBY IN ACCORDANCE WITH THE CODES THEREOF UPON ROTATION THEREOF BY SAID MOTOR MEANS;

A PLURALITY OF FAULT RELAY MEANS ADAPTED TO BE ACTUATED BY ELECTRICAL SIGNALS COUPLED THERETO INDICATIVE OF FAULT CONDITIONS CORRESPONDING TO SAID CAM WHEELS, EACH HAVING SECOND AND THIRD NORMALLY-OPEN CONTACT MEANS THEREON, SAID FIRST AND SECOND CONTACT MEANS OF CORRESPONDING CAM WHEEL AND FAULT RELAY MEANS BEING CONNECTED IN SERIES CIRCUIT RELATIONSHIP;

STEPPING SWITCH MEANS, INCLUDING ACTUATING WINDING MEANS, FOR SEQUENTIALLY CONNECTING SAID SERIALLY CONNECTED FIRST AND SECOND CONTACT MEANS TO SAID ELECTRICAL TERMINAL MEANS FOR COMPLETING AN ELECTRICAL CIRCUIT TO ACTUATE THE RADIO TRANSMITTER KEYING MEANS;

MEANS CONNECTED TO SAID MOTOR MEANS FOR ACTIVATING SAID MOTOR MEANS THROUGH ONE ROTATION THEREOF RESPONSIVE TO EACH STEPPING ACTIVATION OF SAID STEPPING SWITCH MEANS AND FOR PERIODICALLY MOMENTARILY ENERGIZING SAID ACTUATING WINDING MEANS;

HOMING SWITCH MEANS, INCLUDING FOURTH AND FIFTH NORMALLY-OPEN CONTACT MEANS AND SIXTH NORMALLY-CLOSED CONTACT MEANS;

CONTROL RELAY MEANS HAVING A RELAY WINDING AND SEVENTH AND EIGHTH NORMALLY-OPEN CONTACT MEANS;

SERIALLY CONNECTED CAPACITOR MEANS AND RESISTOR MEANS CONNECTED IN PARALLEL WITH SAID CONTROL RELAY WINDING THROUGH SAID SEVENTH CONTACT MEANS;

SAID ACTUATING WINDING MEANS AND SAID SIXTH AND EIGHTH CONTACT MEANS BEING SERIALLY CONNECTED ACROSS SAID ELECTRICAL SUPPLY MEANS FOR ACTUATION OF SAID STEPPING SWITCH MEANS;

SAID CAPACITOR AND RESISTOR MEANS BEING SERIALLY CONNECTED WITH SAID FOURTH CONTACT MEANS ACROSS SAID ELECTRICAL SUPPLY MEANS FOR ENERGIZATION OF SAID CONTROL RELAY WINDING UPON CLOSURE OF SAID SEVENTH CONTACT MEANS;

CIRCUIT MEANS, INCLUDING SAID THIRD CONTACT MEANS, CONNECTED TO SAID ELECTRICAL SUPPLY MEANS AND SAID CONTROL RELAY WINDING FOR MOMENTARY ENERGIZATION OF SAID CONTROL RELAY WINDING UPON CLOSURE OF SAID THIRD CONTACT MEANS;

AND SAID SIXTH CONTACT MEANS AND SAID MOTOR ACTIVATING MEANS BEING CONNECTED ACROSS SAID ELECTRICAL SUPPLY MEANS FOR ENERGIZATION OF SAID MOTOR ACTIVATING MEANS UPON CLOSURE OF SAID FOURTH CONTACT MEANS.