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:
Feb. 04, 2020
Filed:
Dec. 21, 2016
Shimano Inc., Sakai, JP;
Akinobu Sugimoto, Sakai, JP;
SHIMANO INC., Sakai, JP;
Abstract
A bicycle sprocket has a rotational center axis. The bicycle sprocket comprises a sprocket body and a chain engagement structure. The chain engagement structure is arranged on a radially outer periphery of the sprocket body. The chain engagement structure includes a plurality of chain-driving teeth to engage with a bicycle chain to transmit a rotational driving force to the bicycle chain, at least one downshifting facilitation area to facilitate a downshifting operation from the bicycle sprocket to a smaller sprocket, and at least one downshifting facilitation projection disposed in the at least one downshifting facilitation area to engage with the bicycle chain when the bicycle chain shifts from the bicycle sprocket toward the smaller sprocket.