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.

Date of Patent:
Jul. 02, 2019

Filed:

Dec. 21, 2016
Applicant:

Shimano Inc., Sakai, Osaka, JP;

Inventors:

Takashi Furuya, Sakai, JP;

Masahiro Yamanaka, Sakai, JP;

Atsuhiro Emura, Sakai, JP;

Assignee:

SHIMANO INC., Osaka, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B62M 3/00 (2006.01); B62M 1/36 (2013.01); F16D 1/068 (2006.01); F16D 1/08 (2006.01); B62M 9/00 (2006.01);
U.S. Cl.
CPC ...
B62M 3/003 (2013.01); B62M 1/36 (2013.01); F16D 1/068 (2013.01); F16D 1/08 (2013.01); B62M 9/00 (2013.01);
Abstract

A bicycle crank assembly includes a fixing member for fixing a sprocket to a crank arm. The fixing member includes a radially-extending projection, to prevent the sprocket from moving relative to the crank axle in an axial direction, and an axially-extending base portion, which is secured to the crank arm. A contact part is provided on an inner periphery of the base portion and contacts the crank axle or is provided on the crank axle and contacts the base portion. The contact part permits force to be transmitted between the crank axle and the fixing member to limit flexing of the crank axle assembly.


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