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. 18, 2020
Filed:
Oct. 26, 2017
Shimano Inc., Sakai, Osaka, JP;
Yasuhiro Tsuchizawa, Osaka, JP;
Hiroshi Matsuda, Osaka, JP;
Hiroyuki Miyoshi, Osaka, JP;
Takuya Katsuki, Osaka, JP;
Shimano Inc., Osaka, JP;
Abstract
A bicycle controller includes an electronic control unit that controls a transmission unit and a motor in accordance with a shift request that changes the transmission ratio. If the transmission ratio is changed in multiple steps in accordance with the shift request, then the electronic control unit selectively executes one of first and second shifting operations. In the first shifting operation, the output of the motor is limited and the transmission unit is operated to reach a requested transmission ratio that corresponds to the shift request. In the second shifting operation, the output of the motor is limited and the transmission unit is operated to reach an intermediate transmission ratio of the requested transmission ratio, and after the electronic control unit temporarily reduces the limitation on the output of the motor, the electronic control unit again limits the output of the motor and operates the transmission unit.