Dual action hydraulic piston assembly

A dual action hydraulic piston assembly, comprising:

• a cylinder having first and second inlet ports on a first end and an outlet port on a second end;
• a conduit connected to the first inlet port and extending into the cylinder;
• an inner ram slidable along an outer surface of the conduit;
• and
• an outer ram slidable between an outer surface of the inner ram and an inner surface of the cylinder,
• wherein the inner ram and the outer ram are configured to move together toward the second end of the cylinder, in response to first fluid being displaced via the first inlet port into the conduit, to displace a second fluid through the outlet port at a first flow rate, and
• wherein the outer ram is configured to move toward the second end of the cylinder, in response to a third fluid being displaced via the second inlet port, to displace the second fluid through the outlet port at a second flow rate,
• further comprising a spring circumscribing the outer surface of the inner ram, the spring acting between the inner ram and the outer ram, the spring having a first end adjacent to a distal end of the outer ram and a second end adjacent to a distal end of the inner ram.

A dual action hydraulic piston assembly, comprising:

• a cylinder having first and second inlet ports on a first end and an outlet port on a second end;
• a conduit connected to the first inlet port and extending into the cylinder;
• an inner ram slidable along an outer surface of the conduit;
• and
• an outer ram slidable between an outer surface of the inner ram and an inner surface of the cylinder,
• wherein the inner ram and the outer ram are configured to move together toward the second end of the cylinder, in response to first fluid being displaced via the first inlet port into the conduit, to displace a second fluid through the outlet port at a first flow rate, and
• wherein the outer ram is configured to move toward the second end of the cylinder, in response to a third fluid being displaced via the second inlet port, to displace the second fluid through the outlet port at a second flow rate,
• wherein the outer ram is moveable, by the third fluid displaced from the second inlet port, at a second advance rate that is at least three times that of a first advance rate that the inner ram and the outer ram are moveable by the first fluid being displaced from the first inlet port into the conduit.