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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.:

US 9981716 B1

PDFFull Text
Date of Patent:
May. 29, 2018

Filed:

Mar. 09, 2017

Drive unit and electric-motor-assisted bicycle

Applicant:

Yamaha Hatsudoki Kabushiki Kaisha, Iwata-shi, Shizuoka, JP;

Inventors:

Ryota Suzuki, Shizuoka, JP;

Yasunori Mano, Shizuoka, JP;

Assignee:

YAMAHA HATSUDOKI KABUSHIKI KAISHA, Shizuoka, JP;

Attorney:

Keating and Bennett, LLP

Primary Examiner:

Kevin Hurley

Assistant Examiner:

Michael R Stabley

Int. Cl.
CPC ...
B62M 6/40 (2010.01); B62M 6/55 (2010.01); B62M 9/10 (2006.01); B62M 11/02 (2006.01); F16H 1/20 (2006.01); F16H 37/06 (2006.01); F16C 17/04 (2006.01); B62M 6/50 (2010.01); B62M 6/90 (2010.01);
U.S. Cl.
CPC ...
B62M 6/55 (2013.01); B62M 9/10 (2013.01); B62M 11/02 (2013.01); F16C 17/04 (2013.01); F16H 1/20 (2013.01); F16H 37/065 (2013.01); B62M 6/50 (2013.01); B62M 6/90 (2013.01);
Abstract

In an electric-motor-assisted bicycle, a motor includes a motor output shaft including a helical gear provided thereon. A reduction gear includes a rotatable shaft and a cylindrical portion. The rotatable shaft extends through the cylindrical portion. A helical gear provided on the cylindrical portion engages the helical gear on the motor output shaft. The rotatable shaft includes a first large-diameter portion, a small-diameter portion and a second large-diameter portion. The reduction gear further includes a bush bearing between an end surface of the first large-diameter portion and an end surface of the second large-diameter portion in the axial direction of the rotatable shaft. The outer periphery of the bush bearing is fixed to the cylindrical portion. The inner periphery of the bush bearing slides in a circumferential direction relative to the small-diameter portion. The bush bearing moves in the axial direction.

Find Patent Forward Citations

Suzuki, Ryota. (2018). Drive unit and electric-motor-assisted bicycle (U.S. Patent No. 9981716). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9981716

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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