Starting valve for variable displacement hydraulic pump

Claim 1

A VARIABLE VOLUME PUMP COMPRISING A PUMP HOUSING, A FLUID CHAMBER WITHIN SAID PUMP HOUSING, AN END CAP AT ONE END OF SAID PUMP HOUSING, AN OUTLET CHAMBER IN SAID END CAP, A CYLINDER BLOCK IN SAID PUMP HOUSING, A PLURALITY OF CYLINDER BORES IN SAID CYLINDER BLOCK, A PISTON WITHIN EACH OF SAID CYLINDER BORES, DRIVE MEANS FOR RECIPROCATING SAID PISTONS, MEANS CONNECTING SAID CYLINDER BORES TO SAID OUTLET CHAMBER, CONTROL MEANS IN SAID CYLINDER BLOCK FOR VARYING THE EFFECTIVE PUMPING STROKE OF SAID PISTONS IN RESPONSE TO THE PRESSURE IN SAID OUTLET CHAMBER, A TRANSFER TUBE SLIDABLY JOURNALED IN SAID END CAP AND MAKING SEALING ENGAGEMENT WITH SAID CONTROL MEANS TO INTERCONNECT SAID OUTLET CHAMBER AND SAID CONTROL MEANS, SAID TRANSFER TUBE BEING SHIFTABLE OUT OF SEALING ENGAGEMENT WITH SAID CONTROL MEANS TO INTERCONNECT SAID OUTLET CHAMBER AND SAID FLUID CHAMBER, MEANS BIASING SAID TRANSFER TUBE OUT OF SEALING ENGAGEMENT WITH SAID CONTROL MEANS, AND FLOW RESPONSIVE MEANS CONSTRUCTED AND ARRANGED TO SHIFT SAID TRANSFER TUBE TO MAKE SEALING ENGAGEMENT WITH SAID CONTROL MEANS RESPONSIVE TO THE RATE OF FLUID FLOW THROUGH SAID TRANSFER TUBE.