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:
Jul. 19, 2011
Filed:
Dec. 18, 2008
Yasushi Fujimoto, Saitama, JP;
Hiroyuki Kojima, Saitama, JP;
Yoshihisa Kanno, Saitama, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A rotation detecting device for detecting the rotational speed of a gear in a transmission without increasing the width of the gear in the axial direction, using any expensive sensor and not limiting the location of a shift drum. An internal combustion engine includes a crankcase in which a crankshaft and a transmission are accommodated. The transmission includes a plurality of gears for shifting, an input shaft for inputting a rotational drive force from the crankshaft, and an output shaft wherein the rotational drive force is transmitted from the input shaft through the gears and to the output shaft to a drive wheel. The internal combustion engine includes rotation detecting devices for respectively detecting the rotational speeds of the gears. The rotation detecting devices respectively include detecting portions opposed to the gears rotating with the rotation of the input shaft and positioned in the axial direction of the transmission.