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:
Nov. 10, 2026
Filed:
Jul. 10, 2023
Honda Motor Co., Ltd., Tokyo, JP;
Makoto Hattori, Saitama, JP;
Masayuki Sunamoto, Saitama, JP;
Naoki Nomura, Saitama, JP;
Hirotaka Onuki, Saitama, JP;
HONDA MOTOR CO., LTD., Tokyo, JP;
Abstract
A gear step estimation method is of estimating a gear step of a transmission device of an electric assist bicycle including a motor and the transmission device which is provided in a power transmission path between the motor and a rear wheel and is capable of switching the gear step among n gear steps. The gear step estimation method includes a step of acquiring, at a first time, a gear ratio that is a gear ratio of a transmission section that is the entire or partial power transmission path including the transmission device, a step of comparing the acquired gear ratio with n preset gear ratios set within a range of possible gear ratios taken by the n gear steps, and a step of estimating the gear step of the transmission device as an m-step in a case where the detected gear ratio matches an m-th preset gear ratios.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile