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. 03, 2009
Filed:
Sep. 16, 2005
Shinya Matsumoto, Saitama, JP;
Kazunari Iguchi, Saitama, JP;
Shinya Matsumoto, Saitama, JP;
Kazunari Iguchi, Saitama, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A transmission system includes transmission case having a work opening formed therein and configured to avoid the necessity for enlarging a transmission case, to prevent an increase in weight and to prevent and inhibit a reduction in the rigidity of the transmission case due to the presence of the work opening. The work opening provides a point of access to permit manual linking/unlinking of an operation cable to/from a derailleur, while ensuring easy oil lubrication for a chain through the work opening. The transmission system also comprises a sprocket cluster constituted of a plurality of transmission sprockets, and a derailleur. The work opening is formed in an axially directed case wall, which is located closest in the axis direction to a transmission sprocket having the largest outer diameter among the sprocket cluster. The same transmission sprocket is located closest in the radial direction to the work opening.