The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 15, 1988
Filed:
Apr. 18, 1986
Mikio Ukai, Nagoay, JP;
Kenji Miyamoto, Inazawa, JP;
Toyoda Gosei Co., Ltd., , JP;
Abstract
A mechanical shaft joint boot made of a resin comprises a bellows having four to seven crests between a large-diameter ring and a small-diameter ring, in which a crest excluding the first crest between the large-diameter ring and the center of the bellows has the maximum top curvature radius. By providing this structure, the thicknesses of these crests are made uniform and elongation-compression distortion is restrained from being concentrated at their tops. The widening of the tops of the crests also restrains any kinking phenomenon which may be produced. Therefore, the durability of the tops of these crests is increased and the durability of the boot as a whole is hence also increased.