Fluid pumping system with auxiliary shut-off control responsive to overpressure

• US 3,276,468 A
• Filed: 03/23/1964
• Issued: 10/04/1966
• Est. Priority Date: 03/23/1964
• Status: Expired due to Term

• Current Assignee: Ralph H. Lebow
• Original Assignee: Ralph H. Lebow
• Inventors: Lebow, Ralph H.
• Application Number:
  US04/353,929
• Time in Patent Office: 925 Days
• US Class Current: 137/491
• CPC Class Codes: B64D 37/00 Arrangements in connection with fuel supply for power plant refuelling during flight B64D39/00
• CPC Class Codes: Y10T 137/2599 Venturi
• CPC Class Codes: Y10T 137/2635 Pilot valve operated
• CPC Class Codes: Y10T 137/3421 Line condition change responsive
• CPC Class Codes: Y10T 137/7766 Choked passage through main valve head

Claims

1. APPARATUS FOR CONTROLLING THE FLOW OF LIQUID COMPRISING A CONDUIT, VALVE MEANS FOR CONTROLLING THE FLOW OF LIQUID THROUGH THE CONDUIT, A SOURCE OF LIQUID SUPPLY, DELIVERING MEANS UPSTREAM OF SAID VALVE MEANS FOR DELIVERING LIQUID UNDER PRESSURE FROM SAID SOURCE TO SAID VALVE MEANS, REGULATING MEANS FOR INCREASING OR DECREASING THE FLOW RATE OF LIQUID TO SAID VALVE MEANS BY SAID DELIVERING MEANS, A FIRST CONTROL MEANS RESPONSIVE TO A FIRST PREDETERMINED PRESSURE IN SAID CONDUIT DOWNSTREAM OF SAID VALVE MEANS FOR DISCONTINUING FLOW OF LIQUID UNDER PRESSURE THROUGH SAID VALVE MEANS, AND A SECOND CONTROL MEANS RESPONSIVE TO A SECOND PREDETERMINED LIQUID PRESSURE DOWNSTREAM OF SAID VALVE MEANS AND OPERATIVELY CONNECTED TO SAID REGULATING MEANS FOR OPERATING SAID REGULATING MEANS TO REDUCE THE FLOW OF LIQUID UNDER PRESSURE TO SAID VALVE MEANS IN THE EVENT SAID FIRST CONTROL MEANS FAILS TO FUNCTION.