Patent ID: 8377266

Claim:
An electric corrosion preventing structure of a marine vessel propelling machine comprising: a stern bracket fixed to a marine vessel; a propelling unit tiltably coupled to the stern bracket via a swivel bracket; a tilting cylinder apparatus interposed between the stern bracket and the swivel bracket; the tilting cylinder apparatus integrally forming a cylinder in a cylinder block; a rod slidably supported to a rod guide coupled to the cylinder, the rod inserted to an oil chamber in an inner portion of the cylinder; a piston fixed to an insertion end of the rod to the cylinder; and an anode electrically connected to the cylinder block, wherein the cylinder is integrally formed in the cylinder block, an electric interconnection of the rod guide and the cylinder is provided by the coupling of the rod guide to the cylinder, an electric interconnection of the piston and the rod is provided by the coupling of the piston to the rod in the inner portion of the cylinder, and the piston coupled to the rod strikes against the rod guide in an electrically connected state, at a maximum extension when the rod protrudes out of the cylinder.