Abstract: A power transmitting system for a four-wheel drive vehicle has a transmission, a central differential, and a viscous coupling. The viscous coupling is provided coaxially with the central differential, and a drive shaft is provided passing through axes of the central differential and the viscous coupling. An output shaft of the transmission is operatively connected to the casing of the differential. One of the differential gears is operatively connected to rear wheels of the vehicle through the drive shaft, and the other differential gear is secured to a housing of the viscous coupling. The housing is operatively connected to front wheel of the vehicle and the hub is secured to the drive shaft.

Abstract: A parking lock mechanism for a vehicle having a fluid operated clutch or electromagnetic clutch. A select lever is rotatably and axially slidably mounted on a shaft and a link mechanism is provided for transmitting the operation of a shift lever to the select lever for rotating and sliding it. In a transmission of the vehicle, a parking shifter rail provided for parking operation is connected to the select lever by a fork. An interlocking plate is provided to be moved together with the select lever to be engaged with the fork at a parking position of the select lever. A parking pawl is provided to be operatively engaged with the parking shifter rail, and a parking gear is provided in the transmission so as to be engaged with the parking pawl. When the shift lever is shifted to the parking position, the parking pawl is rotated by the movement of the parking shifter rail and engaged with the parking gear, and the interlocking plate engages with the fork for locking the parking shifter rail.