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:
Apr. 16, 2002
Filed:
May. 25, 2000
Kozo Inoue, Osaka, JP;
Tsubakimoto Chain Co., Osaka, JP;
Abstract
A sprocket has a central through-hole for attachment of the sprocket to a rotating shaft, a boss coaxial with the through-hole, and teeth on the periphery of the sprocket. The boss has a cylindrical outer surface coaxial with the through-hole and having stepped small-diameter portions formed at opposite ends of the boas. A cushion body is in the form of a disk having an eccentric through-hole and includes an annular bearing having a cylindrical inner surface defining the through-hole, and a cushion member press-fitted over a cylindrical outer surface of the bearing. The bearing is slidably mounted on the cylindrical outer surface of the boss on each side of the teeth, and a ring-like flange is press-fitted over each stepped portion of the boss so as to prevent the cushion body from moving in the axial direction of the sprocket while allowing sliding movement of the cushion body relative to the boss. With this arrangement, the cushion body is kept in a prescribed position at all times even when the wrapping angle of a chain relative to the sprocket exceeds 180°. Thus, striking noise at engagement points between the chain and the sprocket can surely be reduced by the cushion body.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile