Electronic reactor safety control device

• US 3,035,995 A
• Filed: 08/11/1958
• Issued: 05/22/1962
• Est. Priority Date: 08/11/1958
• Status: Expired due to Term

• Current Assignee: Bernard G. Seeley, Charles C. Weeks
• Original Assignee: Bernard G. Seeley, Charles C. Weeks
• Inventors: Seeley, Bernard G., Weeks, Charles C.
• Application Number:
  US03/754,491
• Time in Patent Office: 1,380 Days
• US Class Current: 376/215
• CPC Class Codes: G21C 7/36 Control circuits
• CPC Class Codes: Y02E 30/30 Nuclear fission reactors

Claims

1. A FAIL-SAFE CONTROL APPARATUS COMPRISING AN ELECTRONIC VALVE HAVING A PAIR OF OUTPUT ELECTRODES AND AT LEAST ONE BIASING ELECTRODE, A SOURCE OF OPERATING POTENTIAL COUPLED TO SAID OUTPUT ELECTRODES TO ESTABLISH AN OPERATING POTENTIAL ACROSS SAID OUTPUT ELECTRODES, BIAS MEANS CONNECTED TO ONE OF SAID BIASING ELECTRODES FOR NORMALLY LIMITING CONDUCTION OF SAID VALVE, AN ACTUATOR CONNECTED TO ONE OF SAID OUTPUT ELECTRODES AND OPERATIVE IN RESPONSE TO CONDUCTION OF SAID VALVE IN A PREDETERMINED AMOUNT, CONDITION RESPONSIVE MEANS CONNECTED TO ONE OF SAID BIASING ELECRODES FOR INCREASING CONDUCTION OF SAID VALVE, AND MEANS CONNECTED TO EACH OF SAID OUTPUT ELECTRODES RESPONSIVE TO FAILURE OF SAID SOURCE FOR INCREASING CONDUCTION OF SAID VALVE TO SAID PREDETERMINED AMOUNT, WHEREBY SAID ACTUATOR WILL BE OPERATED UPON FAILURE OF SAID SOURCE.