Patent ID: 7448311

Claim:
A displacement difference-absorbing mechanism for a cylinder apparatus including a main cylinder body and a belt that closes a slit extending in an axial direction, and wherein a piston is displaceable in the axial direction under an action of a pressure fluid supplied from a pressure fluid inlet/outlet port, said displacement difference-absorbing mechanism comprising: a displacement member displaceable in the axial direction along said main cylinder body; a displacement-transmitting member connected to said piston, which transmits displacement of said piston to said displacement member; and a displacement difference-absorbing member provided between said displacement member and said displacement-transmitting member, which is relatively displaceable with respect to said displacement transmitting member, and which has a perpendicular surface disposed substantially perpendicular to a displacement direction of said displacement member, and a curved surface having a constant radius about a center of a vertical line, wherein said displacement difference-absorbing member is arranged such that said perpendicular surface is fitted to one of said displacement member and said displacement-transmitting member, and said curved surface is fitted to another one of said displacement member and said displacement-transmitting member.