Abstract: The present invention relates to a thrust force reduction device for torque converter comprising a pump rotor, a turbine rotor connected to a turbine shaft and disposed opposed to the pump rotor and at least one stator rotor and a fixed cylindrical shaft fitted to a boss of the pump rotor; characterized by that a seal element is fixed to the turbine shaft and produces a thrust reactional force so as to cancel a thrust force which occurs in the torque converter; the seal element facing a fluid chamber receiving pressurized hydraulic fluid exhausted from the turbine rotor, and the seal element being disposed liquid tight between the turbine shaft and a power input guide to the turbine from the engine, to which the turbine is connected.

Abstract: An emergency PTO driving unit including an emergency PTO pump being normally equipped to a vehicle for an industrial machinery, said emergency PTO pump being interconnected through a clutch unit to an axle to utilize rotation of a wheel as a power source for driving the pump, said clutch unit being so composed that the clutch is brought into a "disengaged" state by means of a hydraulic pressure supplied from a proper hydraulic pump driven by an engine when the engine is running, and the clutch is brought into an "engaged" state by means of a spring means when the engine is stopped.

Abstract: A power change-over mechanism of a vehicle for industrial machinery, in which a power change-over spool is divided into an outer peripheral side member and an inner peripheral side member, the both members are spline connected each other freely movably in the axial direction. An interlocking stopper mechanism defining said axial movement and an urging means are provided, which urges the outer peripheral side member toward the direction of operation at the time when the outer peripheral side member is operated.