Patent ID: 8276472
Filing Date: 2012-10-02
Classification: F16H,Y10T

Abstract:
1. A transmission assembly comprising: a shift drum operable to rotate in a first rotation direction and a second rotation direction so as to engage a selected one of a reverse gear and a plurality of forward gears, said plurality of forward gears comprising a fastest forward gear; the shift drum having a reverse cam groove formed on an outer periphery thereof, and extending in a circumferential direction thereon; said reverse cam groove having a first end and a second end situated at positions spaced apart in a circumferential direction of the shift drum; and a reverse stopper arm urged by an urging member into the reverse cam groove, wherein the shift drum is configured such that at a common speed change position, in which either the fastest forward gear or the reverse gear is capable of becoming engaged, the reverse stopper arm fits into the first end of the reverse cam groove, said reverse stopper arm being operable in a manner such that: