Patent ID: 6062923
Filing Date: 2000-05-16
Classification: B63H,F15B

Abstract:
A tilt-trim device for a marine propulsion unit comprising a cylinder means that has an inner cylinder and an outer cylinder, said cylinder means for tilt-trim operation of said propulsion unit; a rod guide fixed to the end portions of said inner cylinder and said outer cylinder; a piston fixed to one end portion of a piston rod and freely slideably housed in a oil chamber of said inner cylinder with a hydraulic fluid filled within the cylinder means; the piston rod being disposed to pass through the rod guide;a tank device in which the hydraulic fluid can be stored;a pump device intended to supply to and discharge from the cylinder means with hydraulic fluid inside of the tank, to cause the expansion and contraction operation of the cylinder means,whereby the inner cylinder and the outer cylinder are formed of pipe material, wherein an inner-end-face of the rod guide facing the oil chamber of the rod guide held on the end portion of the inner cylinder, the rod guide sandwiched and fixed between the inner cylinder and the outer cylinder by bending the end portion of the outer cylinder inwardly at an outer-end-face of the rod guide.