Patent ID: 6123513
Filing Date: 2000-09-26
Classification: F04B

Abstract:
A piston for use in a compressor that compresses gas containing lubricating oil, wherein the compressor includes a housing having a crank chamber and a cylinder bore for accommodating the piston, and a driving body located in the crank chamber, wherein the driving body is operably connected to the piston by a connecting joint, and wherein the driving body reciprocates the piston by means of the connecting joint when the driving body rotates, the piston comprising:a head for compressing the gas supplied to the cylinder bore;a skirt projecting from the head toward the crank chamber, wherein the skirt has a slot for receiving the driving body by means of the connecting joint; anda lubricant receiving wall formed on an inner wall of the slot, wherein the lubricant receiving wall has a collision surface against which swirling gas in the crank chamber collides when the driving body rotates, wherein the oil contained in the gas separates from the gas and adheres to the lubricant receiving wall when the gas collides against the collision surface, wherein the lubricant receiving wall has a guiding portion for guiding the oil adhered to the lubricant receiving wall to the connecting joint.