Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Eiji Kittaka1
Seiji Hamaoka1
Kinya Mizuno1
Hiroshi Sotani1
Date of Patent
April 19, 2011
1Patent Application Number
119029191
Date Filed
September 26, 2007
1Patent Primary Examiner
Patent abstract
A vehicular transmission for an internal combustion engine includes lead grooves disposed on an outer periphery of a shift drum having communication portions connecting a pair of gear train establishment portions extending circumferentially along the shift drum. The communication portions include half neutral portions formed at a center thereof, extending circumferentially along the shift drum. The resulting configuration suppresses an engagement noise to a minimum during changing of a gear position through a sliding motion of a shifter.
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