Patent ID: 7488159

Claim:
A gas compression system comprising (a) a compression cylinder having a gas inlet, a compressed gas outlet, one or more liquid transfer ports; (b) a pump having a suction and a discharge; (c) a pressure intensifier having an inlet and an outlet; (d) a compressor liquid, at least a portion of which is contained in the pump, the pressure intensifier, and the compression cylinder; and (e) piping and valve means adapted to transfer the compressor liquid from the discharge of the pump to any of the one or more liquid transfer ports of the compression cylinder and to the inlet of the pressure intensifier; piping and valve means adapted to transfer the compressor liquid from any of the one or more liquid transfer ports of the compression cylinder to the suction of the pump; and piping means to transfer the compressor liquid from the outlet of the pressure intensifier to any of the one or more liquid transfer ports of the compression cylinder.