Remote door controller

• US 3,090,959 A
• Filed: 08/06/1956
• Issued: 05/21/1963
• Est. Priority Date: 08/06/1956
• Status: Expired due to Term

• Current Assignee: George H. Marmont
• Original Assignee: George H. Marmont
• Inventors: Marmont, George H.
• Application Number:
  US03/602,336
• Time in Patent Office: 2,479 Days
• US Class Current: 340/12.5
• CPC Class Codes: E05F 15/77 using wireless control

Claims

1. IN REMOTE CONTROL FOR A DOOR ACTUATING DEVICE, A CONTROL SIGNAL TRANSMITTER, COMPRISING:

A SOURCE OF DIRECT CURRENT POTENTIAL INCLUDING SWITCHING MEANS;

OSCILLATOR MEANS INCLUDING AN ELECTRONIC DEVICE HAVING AN OUTPUT CIRCUIT CONNECTION WITH SAID POTENTIAL SOURCE, AND A CONTROL CIRCUIT;

A PLURALITY OF TANK CIRCUIT RESPECTIVELY TUNABLE TO DIFFERENT FREQUENCIES;

AN ANTENNA COUPLED WITH SAID ELECTRONIC DEVICE;

AND CONTACTS ALTERNATELY ACTUATED BY SAID SWITCHING MEANS AT A PREDETERMINED FIXED FREQUENCY RATE FOR SUCCESSIVELY CONNECTING SAID TANK CIRCUITS INTO THE CONTROL CIRCUIT OF SAID ELECTRONIC DEVICE TO CAUSE ALTERNATE OSCILLATION PERIODS OF SAID OSCILLATOR MEANS AT EACH OF SAID FREQUENCIES, THE CHANGE FROM ONE FREQUENCY TO THE OTHER BEING AT SAID PREDETERMINED FIXED RATE.