Method of making heat sensors

• US 3,153,847 A
• Filed: 08/02/1963
• Issued: 10/27/1964
• Est. Priority Date: 08/02/1963
• Status: Expired due to Term

• Current Assignee: John E. Lindberg Jr
• Original Assignee: John E. Lindberg Jr
• Inventors: Lindberg, John E. Jr.
• Application Number:
  US04/299,672
• Time in Patent Office: 452 Days
• US Class Current: 29/595
• CPC Class Codes: G01K 5/465 using electrical contact making or breaking devices
• CPC Class Codes: Y10T 29/49007 Indicating transducer
• CPC Class Codes: Y10T 29/49105 Switch making
• CPC Class Codes: Y10T 29/49808 Shaping container end to encapsulate material

Claims

1. A METHOD OF MAKING A HEAT SENSOR, COMPRISING THE STEPS OF:

INSERTING A MATERIAL THAT READILY AND REVERSIBLY FORMS HYDRIDES BY INGASSING AND OUTGASSING INTO A TUBE OF A SUBSTANCE THAT DOES NOT READILY FORM HYDRIDES, WHILE PROVIDING FREE PASSAGE FOR GAS IN CONTACT WITH SAID MATERIAL, EVACUATING SAID TUBE TO WITHDRAW SUBSTANTIALL ALL ATMOSPHERIC GASES THEREFROM, THEN FORCING HYDROGEN AT HIGH PRESSURE INTO SAID TUBE AND MAINTAINING SAID HYDROGEN THERE UNDER PRESSURE WHILE REDUCING THE TEMPERATURE TO SAID TUBE FROM A HIGH TEMPERATURE TO A LOW TEMPERATURE TO CAUSE SAID MINERAL TO INGAS SAID HYDROGEN, THEN WITHDRAWING SOME OF SAID HYDROGEN FROM SAID TUBE;

AND SEALING OFF THE TUBE INTERIOR FROM THE ATMOSPHER.