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. 10, 2015
Filed:
Dec. 19, 2011
Hiroyuki Urabe, Osaka, JP;
Hiroyuki Urabe, Osaka, JP;
Shimano Inc., Osaka, JP;
Abstract
An internal motorized bicycle hub includes a hub axle, a motor, a first bearing, a second bearing, a spacer and a movement restricting section. The motor has a rotor and a stator. The first and second bearings rotatably support the rotor on the hub axle. The second bearing is axially spaced apart from the first bearing. Each of the first and second bearings includes an inner race attached to the hub axle, an outer race attached to the rotor, and a rolling element arranged between the inner and outer races. The spacer is arranged between the inner races. The movement restricting section restricts movement of the inner race of the first bearing in a direction of separating from the bearing of the second bearing. The spacer presses the bearing of the first bearing towards the movement restricting section.