Abstract: When a reverse select operation is performed, a pre-balk lever (180) rotates to a rotation position as a control rod (100) rotates. The pre-balk lever (180) has an engagement portion (190), which engages with a tip end portion of a pre-balk pin (162) at the rotation position. As a reverse lever (136) swings while they are engaged with each other, a shift rod (113) moves in such a direction as to activate a synchronizer (60). The engagement portion (190) has a guide surface (192), which guides the tip end portion of the pre-balk pin (162) to the engagement position while the pre-balk lever (180) is rotating toward the rotation position.

Abstract: When a reverse select operation is performed, a pre-balk lever (180) rotates to a rotation position as a control rod (100) rotates. The pre-balk lever (180) has an engagement portion (190), which engages with a tip end portion of a pre-balk pin (162) at the rotation position. As a reverse lever (136) swings while they are engaged with each other, a shift rod (113) moves in such a direction as to activate a synchronizer (60). The engagement portion (190) has a guide surface (192), which guides the tip end portion of the pre-balk pin (162) to the engagement position while the pre-balk lever (180) is rotating toward the rotation position.

Abstract: In a power transmission apparatus of four-wheel-drive vehicle, driving noise between the first bevel gear fixed on the transfer shaft and the second bevel gear fixed on the axle shaft is reduced in each bevel gear comprising the power transmission and restrictions are avoided when the deceleration ratio of the transfer shaft and the line are set. Power transmission having clutch for variably controlling driving torque division with respect to the wheels not being constantly driven, an axle shaft for constantly driving the axle shaft by obtaining the driving force from the output shaft of the transmission.

Abstract: A reverse brake mechanism for an automobile transmission has a synchronizing mechanism including a clutch sleeve, mounted for sliding movement on a primary transmission shaft, which has peripheral clutch teeth with chamfers arranged at regular separations. A synchronizing ring, mounted for rotation on the primary shaft, has peripheral synchronizing teeth with chamfers arranged at regular separations, and a brake member is provided for braking the primary shaft. The brake member is operationally coupled to the primary shaft through the synchronizing ring while the clutch sleeve is brought into engagement with the synchronizing ring through their teeth with chamfers when shifting the automobile transmission to a reverse gear.