Patent ID: 7195191

Claim:
A shaft comprising: a stationary portion fixed to a deck; a shaft body extended in a diameter smaller than that of the stationary portion, the shaft body having at least one rotary body that is rotatably supported on an outer circumference of said shaft body; and an oil spattering prevention means disposed for preventing oil applied between the shaft body and the rotary body from being spattered when the rotary body rotates, wherein the oil spattering prevention means comprises: a circumferential recess formed on the outer circumference of the shaft body and having a predetermined depth and at least one side perpendicular to a substantially flat bottom surface at the predetermined depth for receiving oil running down on the shaft body; and an annular recess formed below a bottom surface of the rotating body and on an upper surface of the stationary portion and comprising at least one side parallel to a surface of the shaft body for receiving oil running down on the shaft body.