A motorized wheelbarrow including a motor and a drive pulley that rotates when the motor is operating. The motorized wheelbarrow also includes wheels and a drive train assembly for transmitting power from the motor to the wheels. The motorized wheelbarrow also includes a clutch assembly movable between a connected condition, in which the motor and the drive train assembly are connected by the clutch assembly, and a disconnected condition, in which the motor and the drive train assembly are not connected with each other, and a brake assembly movable between an engaged condition, in which the brake assembly resists rotation of the wheels, and a disengaged condition, in which the brake assembly does not resist rotation of the wheels. Both of the clutch assembly and the brake assembly are controlled by a single control assembly so that the clutch assembly and the brake assembly are mutually functionally exclusive.

A tractor, including: a link mechanism fixation-member which regulates rotation of the HST trunnion shaft by abutting the link mechanism; a link mechanism fixation-member operation lever which makes the link mechanism fixation-member about the link mechanism, or makes the link mechanism fixation-member move in a direction so as to get apart from the link mechanism; a brake pedal which is provided at the other side of the left-and-right sides of the step floor; and a link mechanism joining-cancellation mechanism which makes, in a case where the link mechanism fixation-member is abutting the link mechanism, the link mechanism fixation-member move in a direction so as to get apart from the link mechanism when stepping-on of the brake pedal is performed.

A tractor, including: a link mechanism fixation-member which regulates rotation of the HST trunnion shaft by abutting the link mechanism; a link mechanism fixation-member operation lever which makes the link mechanism fixation-member about the link mechanism, or makes the link mechanism fixation-member move in a direction so as to get apart from the link mechanism; a brake pedal which is provided at the other side of the left-and-right sides of the step floor; and a link mechanism joining-cancellation mechanism which makes, in a case where the link mechanism fixation-member is abutting the link mechanism, the link mechanism fixation-member move in a direction so as to get apart from the link mechanism when stepping-on of the brake pedal is performed.

A motorized wheelbarrow including a motor and a drive pulley that rotates when the motor is operating. The motorized wheelbarrow also includes wheels and a drive train assembly for transmitting power from the motor to the wheels. The motorized wheelbarrow also includes a clutch assembly movable between a connected condition, in which the motor and the drive train assembly are connected by the clutch assembly, and a disconnected condition, in which the motor and the drive train assembly are not connected with each other, and a brake assembly movable between an engaged condition, in which the brake assembly resists rotation of the wheels, and a disengaged condition, in which the brake assembly does not resist rotation of the wheels. Both of the clutch assembly and the brake assembly are controlled by a single control assembly so that the clutch assembly and the brake assembly are mutually functionally exclusive.

A motorized wheelbarrow including a motor and a drive pulley that rotates when the motor is operating. The motorized wheelbarrow also includes wheels and a drive train assembly for transmitting power from the motor to the wheels. The motorized wheelbarrow also includes a clutch assembly movable between a connected condition, in which the motor and the drive train assembly are connected by the clutch assembly, and a disconnected condition, in which the motor and the drive train assembly are not connected with each other, and a brake assembly movable between an engaged condition, in which the brake assembly resists rotation of the wheels, and a disengaged condition, in which the brake assembly does not resist rotation of the wheels. Both of the clutch assembly and the brake assembly are controlled by a single control assembly so that the clutch assembly and the brake assembly are mutually functionally exclusive.

The reverse input shutoff clutch includes: an input member, an output member coaxially arranged with the input member, a pressed member having a pressed surface, and an engaging element. The engaging element, when rotational torque is inputted to the input member, moves in a direction away from the pressed surface due to engagement with the input member and transmits the rotational torque to the output member, and when rotational torque is reversely inputted to the output member, moves in a direction toward the pressed surface due to engagement with the output member, and prevents or suppresses relative rotation between the output member and the pressed member.

A non-backdrivable clutched module for a bi-directional actuator such as actuators used for active aerodynamics on vehicles. The module has both a stopper mode and a clutch mode. During the stopper mode a back-driving force gets diverted away from the actuator using a locking bearing member. If the force is too great a clutch mode will disengage the back-driving force completely from the shaft connected to the actuator, thereby preventing damage to the actuator.

A no-back brake includes a torque tube and a brake. The brake is configured to be axially displaced in response to a force to prevent the torque tube from rotating. The brake includes a rotor that is concentric with the torque tube and that is fixed to the torque tube so that the rotor rotates with the torque tube. The brake includes a stator that is concentrically mounted on the torque tube so that the torque tube is rotatable relative to the stator. The brake includes a friction device located between the rotor and the stator. The friction device is configured to form a frictional coupling between the rotor and the stator that opposes relative rotational motion between the rotor and the stator when the brake is axially displaced. The frictional device includes a composite material.

An actuating device for a coupling/braking device is provided with at least one actuating piston that is axially slidable relative to a shaft and, in an actuating state, exerts an axially acting contact pressure on coupling/braking parts of the coupling/braking device. At least one control piston is provided that axially displaces the at least one actuating piston into the actuating position. A coating is provided in a contact region between the actuating piston and the control piston, wherein the coating is disposed at the actuating piston or at the control piston or at both the actuating piston and the control piston. The actuating piston can also be designed as a control piston that interacts immediately with the coupling/braking parts of the coupling/braking device.

An actuating device for a coupling/braking device is provided with at least one actuating piston that is axially slidable relative to a shaft and, in an actuating state, exerts an axially acting contact pressure on coupling/braking parts of the coupling/braking device. At least one control piston is provided that axially displaces the at least one actuating piston into the actuating position. A coating is provided in a contact region between the actuating piston and the control piston, wherein the coating is disposed at the actuating piston or at the control piston or at both the actuating piston and the control piston. The actuating piston can also be designed as a control piston that interacts immediately with the coupling/braking parts of the coupling/braking device.