Patent ID: 8920135

Claim:
An air compressor apparatus for compressing a first compressible fluid, comprising: a plurality of pistons; a cylinder having an opening located in a predetermined location configured to allow the plurality of pistons and the first compressible fluid to enter the cylinder, wherein the cylinder further has a piston exit and a compressible fluid exit which are both located below the opening and which respectively allow the pistons and the compressible fluid to be discharged from the cylinder, wherein the pistons, when disposed in the cylinder, form a substantially fluid tight seal with an inner wall of the cylinder and define compression chambers between adjacent pistons, the compression chambers traveling downward through the cylinder as the pistons are moved downward by the force of gravity; a transporter configured to transport the pistons from the piston exit to the opening and to place said pistons into the cylinder via the opening at predetermined intervals; and a tubing coiled around an outer wall of the cylinder.