Patent ID: 6692237
Filing Date: 2004-02-17
Classification: F01B,F01C

Abstract:
A rotary cylinder apparatus comprising:a rotary cylinder member having a plurality of cylinder chambers formed thereto so as to pass through a rotary shaft center and rotating around said rotary shaft center; a piston having reciprocating linear motion in surface contact with inside of said cylinder chambers, wherein said cylinder chambers intersect at said rotary shaft center of said rotary cylinder member, and a length of a portion where said cylinder chambers intersect in a moving direction of said piston is shorter than a length of said piston; and a piston holding member holding said piston and rotating around a rotation center eccentric from said rotary shaft center of said rotary cylinder member; and a casing rotatably supporting and accommodating said rotary cylinder member and said piston holding member and having at least one inlet for a fluid and at least one outlet for the fluid, wherein said piston is rotatably held at a position away from said rotation center of said piston holding member by a fixed distance.