Compressor

A compressor which comprises:

• a cylinder having a hollow interior;
• a rotor member rotatably eccentrically mounted in said hollow interior and having a plurality of outwardly open sliding recesses therein;
• a plurality of vanes slidably mounted in corresponding sliding recesses and extending outwardly into sliding contact with the inner surface of said cylinder;
• a rotor shaft on said rotor having the ends extending from the opposite ends of said rotor;
• end plates secured to opposite ends of said cylinder and closing said hollow interior for defining a vane chamber in said cylinder, said ends of said rotor shaft being rotatably supported on said end plates, and the surfaces of said end plates and the surfaces of the ends of said rotor being in spaced opposed relationship to define a clearance therebetween, at least one of said opposed surfaces at at least one end said rotor having a ring-like groove therein spaced radially outwardly from said rotor shaft and into which the inner ends of said sliding recesses are open;
• means for supplying a liquid lubricant under pressure into said ring-like groove;
• and
• a dynamic pressure type fluid thrust bearing in said surface in which said ring-like groove is positioned and being between said ring-like groove and said rotor shaft, and including a plurality of grooves in said surface extending from said ring-like groove to said rotor shaft.