Leak detector

• US 3,323,350 A
• Filed: 12/28/1964
• Issued: 06/06/1967
• Est. Priority Date: 12/28/1964
• Status: Expired due to Term

• Current Assignee: Yokogawa Hokushin Electric Corp. (Yokogawa Electric Corporation)
• Original Assignee: John A. Roberts
• Inventors: Roberts, John A.
• Application Number:
  US04/421,336
• Time in Patent Office: 890 Days
• US Class Current: 73/40.7
• CPC Class Codes: G01M 3/045 with electrical detection means
• CPC Class Codes: G01M 3/20 using special tracer materials, e.g. dye, fluorescent material, radioactive material
• CPC Class Codes: G01N 1/405 by adsorption or absorption

Claims

1. IN A LEAK DETECTOR SYSTEM INCLUDING PROBE MEANS, CONDUIT MEANS, PUMP MEANS, AND DETECTOR MEANS, THE CONDUIT MEANS CONNECTING SAID PROBE MEANS, SAID PUMP MEANS, AND SAID DETECTOR MEANS TO DIRECT AIR SAMPLES FROM SAID PROBE MEANS THROUGH SAID PUMP MEANS TO SAID DETECTOR MEANS, SAID CONDUIT MEANS HAVING A FIRST SECTION OF A FIRST DIAMETER CONNECTED TO THE PROBE AND A SECOND SECTION OF A SECOND DIAMETER GREATER THAN SAID FIRST DIAMETER CONNECTED TO SAID DETECTING MEANS AND TO SAID FIRST CONDUIT SECTION, THE IMPROVEMENT OF MEANS FOR REMOVING WATER FROM AIR SAMPLES COMPRISING A MOISTURE ABSORPTIVE PIECE OF MATERIAL HAVING AN APERTURE EXTENDING THERETHROUGH DEFINING APERTURE WALLS, SAID APERTURE HAVING A DIAMETER