Patent ID: 8070612
Filing Date: 2011-12-06
Classification: F16D,F16J,Y10S,Y10T

Abstract:
1. A boot for a constant-velocity universal joint, the boot comprising: a major-diameter cylindrical portion; a minor-diameter cylindrical portion, separated from and concentric with the major-diameter cylinder portion, and having a smaller diameter than that of the major-diameter cylindrical portion; and an intermediate portion connecting the major-diameter cylindrical portion with the minor-diameter cylindrical portion, wherein said intermediate portion comprises: wherein at least one of said shoulders comprises alternately repeated crests protruding in the diametrically outward direction of said shoulders, and roots denting in the diametrically inward direction of said shoulders, and said shoulders have a side surface that connects between said root and said crest in the substantially axial direction of said shoulders, and an end surface that connects between said crest and said root in the substantially diametrical direction, wherein the enlarged wall thickness is not provided at said root.