Patent ID: 6920860
Filing Date: 2005-07-26
Classification: F02F,Y10T

Abstract:
1. A cooling channel cover for a one-piece piston of an internal combustion engine, the piston having a closed cooling channel that runs around inside a piston crown, at a level of a piston ring band, and a ring-shaped recess provided between the piston ring band and a piston shaft, wherein the piston shaft is connected with the piston hubs suspended on the piston crown, the cooling channel cover comprising a one-piece plastic ring having the following characteristics: a U-shaped cross-section; a ring bottom; an outer shank around a circumference of the ring and being molded onto the ring bottom and angled off radially to the outside; an inner shank around the circumference of the ring and being angled off radially to the inside; a first radial division having a mouth width; and a film hinge for radial deflection of the outer shank of the plastic ring, the film hinge being formed by a second radial division, opposite the first division, on the circumference, wherein the second radial division does not separate the outer shank that runs around the circumference, to form the film hinge.