Pilot operated metering device

• US 3,315,694 A
• Filed: 02/11/1964
• Issued: 04/25/1967
• Est. Priority Date: 02/11/1964
• Status: Expired due to Term

• Current Assignee: Harry W. Addison Jr
• Original Assignee: Harry W. Addison Jr
• Inventors: Addison, Harry W. Jr.
• Application Number:
  US04/343,983
• Time in Patent Office: 1,169 Days
• US Class Current: 137/110
• CPC Class Codes: F16K 31/365 the fluid acting on a diaphragm
• CPC Class Codes: Y10T 137/2562 Dividing and recombining
• CPC Class Codes: Y10T 137/776 Control by pressures across flow line valve
• CPC Class Codes: Y10T 137/8158 With indicator, register, recorder, alarm or inspection means

Claims

10. A PILOT OPERATED INDICATING APPARATUS COMPRISING, A MAIN CONTROL VALVE HAVING AN INLET AND AN OUTLET WITH A VALVE SEAT THEREBETWEEN AND VALVE CLOSURE MEMBER COOPERATING THEREWITH TO CONTROL A MAIN FLOW THROUGH THE APPARATUS, A PASSAGE IN THE VALVE CLOSURE MEMBER OF THE MAIN CONTROL VALVE, A PILOT DIVIDER VALVE INCLUDING IN PART THE PASSAGE IN THE MAIN CONTROL VALVE AND CONTROLLING A PILOT FLOW FROM THE MAIN FLOW THROUGH THE PASSAGE IN THE MAIN CONTROL VALVE, SAID PILOT DIVIDER VALVE BEING CONTROLLED BY THE RELATIONSHIP BETWEEN THE VALVE CLOSURE MEMBER AND THE VALVE SEAT OF THE MAIN CONTROL VALVE AND OPERATED IN PROPORTION TO THE OPERATION OF THE MAIN CONTROL VALVE, MEANS INCLUDING CONDUIT MEANS CONNECTING THE OUTLET OF THE MAIN CONTROL VALVE AND THE PASSAGE IN THE MAIN CONTROL VALVE AND RESPONSIVE TO THE PRESSURE AT THE OUTLET OF THE MAIN CONTROL VALVE TO OPERATE THE MAIN CONTROL VALVE AND EFFECT CONTROL OF THE MAIN FLOW THERETHROUGH, AN INDICATOR MEANS POSITIONED IN THE CONDUIT