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:
Mar. 30, 2010
Filed:
Jan. 29, 2008
Applicant:
Kazutoshi Ishioka, Shizuoka, JP;
Inventor:
Kazutoshi Ishioka, Shizuoka, JP;
Assignee:
Yamaha Hatsudoki Kabushiki Kaisha, Iwata-shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H 5/04 (2006.01); H02H 7/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
A motorcycle has a transmission including a transmission mechanism and an electronic control unit (ECU). The transmission mechanism includes a crankshaft as an input shaft, a driven shaft as an output shaft and an electric motor. The electric motor changes continuously the transmission ratio between the crankshaft and the driven shaft. The ECU estimates the heat value of the motor from a rate of change in the transmission ratio. When the estimate heat value reaches or exceeds a specified value the electric motor is restricted or stopped.