Patent ID: 6537045
Filing Date: 2003-03-25
Classification: F01C,F04B,F04C,F16C

Abstract:
A rotating type machine, comprising:a first moving member having a first surface; and a second member having a second surface slidably interfacing with said first surface, said first and second surfaces having relative movement therebetween, one of said first and second members being supported by the other of said first and second members through the interface of their respective first and second surfaces, at least one of said first and second surfaces provided with at least one recess therein, a liquid lubricant being provided between said first and second surfaces, the lubricant received in said recess; wherein, relative to the said surface in which said recess is provided, said recess has a maximum depth which ranges between about 0.00125 and 0.0060 inches, and a surface area which ranges between about 1.767Ã—10âˆ’4 and 1.963Ã—10âˆ’3 square inches, whereby, during operation of said machine, a pressure spike is created in the lubricant above said recess and said first and second surfaces are hydrodynamically separated from each other by said pressure spike.