High vibration pneumatic piston assembly made from additive manufacturing

A piston assembly comprising:

• a piston including a first cap disposed on a first end of the piston and a second cap disposed on a second end of the piston;
• a piston cross-member in between the first cap and the second cap;
• wherein the piston cross-member comprises a hollowed out portion defining a webbing that is a sheet of solid material extending across a portion of the piston cross-member, wherein the webbing does not form a hole or holes passing through the piston cross-member, wherein a thickness of the webbing is less than a thickness of other portions of the piston cross-member so as to provide weight reduction;
• a cover integrally formed with the piston cross-member, the cover including a cutout with a first notch and a second notch disposed along top and bottom edges respectively of the cutout, and a first slot and a second slot, wherein the cover is hollow and is in a shape of a hollow tube that extends the entire length of the cover between the first cap and second cap, and further wherein the piston, piston cross-member, and cover form a single piece of additively manufactured material;
• and
• a crank mechanism including a shaft and a crank, wherein a first end of the crank is affixed to the shaft, and a second end of the crank is slidably and rotationally engaged with a third slot in the piston cross-member, and wherein a rotational axis of the shaft is disposed externally of the cover.