Valve sampling system for taking gaseous samples at about atmospheric pressure

• US 3,417,605 A
• Filed: 10/17/1966
• Issued: 12/24/1968
• Est. Priority Date: 10/17/1966
• Status: Expired due to Term

• Current Assignee: Hahn, William C.
• Original Assignee: Hahn, William C.
• Inventors: Hahn, William C.
• Application Number:
  US04/587,081
• Time in Patent Office: 799 Days
• US Class Current: 73/23.2
• CPC Class Codes: G01N 30/20 using a sampling valve

Claims

5. IN A TWO-POSITION, FLUID-ACTUATED, DIAPHRAGM-SEALED VALVE IN WHICH THERE IS PROVIDED AT LEAT TWO PISTONS FOR ACTUATING THE SEALING OF PORTS FOR SAMPLE ENTRY, SAMPLE EXHAUST, SAMPLE LOOP, AND CARRIER GAS ENTRY AND EXHAUST, A FIRST CONDUIT MEANS FOR INTRODUCING SAMPLE INTO SAID VALUE, A SECOND CONDUIT MEANS FOR EXHAUSTING SAMPLE FROM SAID VALUE, A THIRD CONDUIT MEANS FOR SUPPLYING CARRIER GAS TO SAID VALVE, A FOURTH CONDUIT MEANS FROM REMOVING CARRIER GAS FROM SAID VALVE, A SAMPLE LOOP CONNECTED AT ONE INTERVAL OF TIME TO SAID FIRST CONDUIT MEANS AND SAID SECOND CONDUIT MEANS AND CONNECTED AT A SECOND INTERVAL OF TIME TO SAID THIRD CONDUIT MEANS AND SAID FOURTH CONDUIT MEANS, A FIRST PISTON CHAMBER DEFINED BY A FIRST AND SECOND PISTON, A SECOND PISTON CHAMBER DEFINED BY THE VALVE BODY AND BY SAID SECOND PISTON, MEANS TO SUPPLY POWER GAS TO SAID FRIST PISTON CHAMBER, THE IMPROVEMENT WHICH COMPRISES MEANS FOR CONNECTING SAID SECOND CONDUIT MEANS TO SAID SECOND PISTON CHAMBER, THE VOLUME OF SAID SECOND PISTON CHAMBER BEING GREATER THAT THE VOLUME OF SAID SAMPLE LOOP AND SAID FIRST CONDUIT MEANS TO THEREBY PUMP SAMPLE INTO SAID SAMPLE LOOP BY THE ACTUATION OF SAID SECOND PISTON.