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. 21, 2020
Filed:
Aug. 24, 2017
Shimano Inc., Sakai, JP;
Ken Yokoi, Sakai, JP;
Akinobu Sugimoto, Sakai, JP;
SHIMANO INC., Sakai, JP;
Abstract
A bicycle sprocket comprises a first sprocket body, first sprocket teeth, a first side surface, a second side surface, at least one shifting facilitation projection, at least one guide portion, and at least one recess. The at least one guide portion is provided on a first side surface to guide a bicycle chain from the bicycle sprocket toward a smaller sprocket in a second shifting operation. The at least one recess is provided on the first side surface so as to be adjacent to the at least one guide portion in a circumferential direction defined about a rotational center axis. At least one of the at least one recess is provided in an upstream angular area defined from the at least one shifting facilitation projection to an upstream side in a driving state and within 90 degrees in the circumferential direction.