A robotic vehicle can include a plurality of motors coupled to a plurality of gearboxes, each gearbox of the plurality of gearboxes configured to be rotated, a plurality of nested driveshafts coupled to the plurality of gearboxes and including at least a first driveshaft and a second driveshaft, and a plurality of appendages operably coupled to the plurality of gearboxes. A particular appendage of the plurality of appendages can be configured to be rotated in response to a rotational motion of the first driveshaft. The robotic vehicle can include a plurality of wheels coupled to the plurality of appendages and configured to rotate about a plurality of wheel axles. Each wheel of the plurality of wheels can be configured to cause the robotic vehicle to be transported across a contacting surface in response to the rotational motion of the second driveshaft.

The electric stroller comprises a frame, a child seat, an operator seat, a plurality of wheels, a port motor, a starboard motor, a control circuit, and a battery. The electric stroller may be a self-propelled conveyance. The child seat may be supported by the frame and may be adapted to transport a child. The operator seat may be coupled to the frame behind the child seat and may be adapted to transport an operator. A port driven wheel may be propelled by the port motor and a starboard driven wheel may be propelled by the starboard motor with the speed and direction of the port motor and the starboard motor controlled independently.

A vehicle includes a chassis, an engine coupled to the chassis, a power source coupled to the chassis, and a track assembly. The track assembly includes an electric motor coupled to the chassis, a first drive wheel coupled to the electric motor and pivotally coupled to the chassis, a second drive wheel coupled to the engine and pivotally coupled to the chassis, and a track engaging the first drive wheel and the second drive wheel. The engine is configured to provide mechanical energy to the second drive wheel to drive the track and propel the vehicle. The electric motor is configured to receive electrical energy from the power source and provide mechanical energy to the first drive wheel to drive the track and propel the vehicle.

A heavy-duty vehicle having a chassis, a front steering axle, and first and second rear axles. The first rear axle may include a first rear axle housing, a first carrier housing, and a second carrier housing and the second rear axle may include a second axle housing, a third carrier housing, and a fourth carrier housing. A first permanent magnet motor may be coupled to the first carrier housing and engaged with a first gearset, and a second permanent magnet motor may be coupled to the second carrier housing and engaged with a second gearset. A first induction motor may be coupled to the third carrier housing and engaged with a third gearset, and a second induction motor may be coupled to the fourth carrier housing and engaged with a fourth gearset.

An electric or hybrid electric vehicle comprises a vehicle chassis extending along a longitudinal axis and a rotatable vehicle drive axle disposed along a transverse axis and having opposed ends that are configured for attachment to a pair of opposed drive wheels. The electric vehicle also comprises a selectively movable electric propulsion motor comprising a rotatable motor shaft rotatable about a motor axis, the electric propulsion motor configured to be mounted within the vehicle chassis and operatively coupled to the rotatable vehicle drive axle and opposed drive wheels, the motor axis configured to be oriented in a substantially vertical direction, a selectively movable differential disposed on the drive axle and configured to operatively couple motive power of the electric propulsion motor that is transmitted to the rotatable motor shaft to the drive axle, and a motor actuator operatively coupled to the electric propulsion motor and the vehicle chassis.

Vehicles, powertrains for vehicles, and methods of mounting powertrains to chassis of vehicles are disclosed herein. A vehicle includes a chassis, a plurality of wheels, and a powertrain. The chassis extends along a longitudinal axis from a first end to a second end arranged opposite the first end. The plurality of wheels are coupled to the chassis between the first end and the second end and configured for rotation about a rotational axis. The powertrain is mounted to the chassis transverse to the longitudinal axis between the first end and the second end. The powertrain is configured to drive rotation of the plurality of wheels about the rotational axis in use of the vehicle.

A drive apparatus for an electric-motor four-wheel drive vehicle includes first and second motors, first and second differential mechanisms, and a propeller shaft. The vehicle includes a first wheel pair including first left and right wheels and a second wheel pair including second left and right wheels and positioned on opposite side to the first wheel pair in a front-rear direction. The first and second motors are configured to output first output torque and second output torque, respectively. The first differential mechanism is configured to distribute the first output torque to a first torque-transmitting member coupled to the first left wheel and a third torque-transmitting member coupled to the propeller shaft. The second differential mechanism is configured to distribute the second output torque to the third torque-transmitting member and a second torque-transmitting member coupled to the first right wheel.

A power transmission unit includes a motor; and a transmission case to enclose an input shaft, an output shaft, and a gear mechanism that transmits driving power between the input shaft and the output shaft. A motor case attached to the transmission case on a side opposite the gear mechanism of the transmission case has a cylindrical shape whose cross section is constant throughout a direction orthogonal to an axial direction of the motor case, and the motor is placed inside the motor case.

Disclosed herein is a rear subframe and suspension system. The subframe may be configured to accommodate one or two electric motors for propelling an automobile. The subframe may be configured such that the motor(s) is inserted through the front end of the subframe. The subframe may substantially surround the motor. Braces may be the coupled to the subframe to secure the motor within the subframe. The subframe may further include built-in motor mounts. An independent rear suspension system and rear steering system may also be coupled to the subframe.

The general layout for a front wheel drive, three-wheeled vehicle with two steerable driven wheels in the front of the vehicle, and the motor or motors located in the mid-section of the vehicle. The vehicle is designed for compact motors, in-hub motors, and direct connect motors which allow a significant portion of the vehicle's weight to be moved forward, while integrating location of the passenger seating, steering, and driven wheels allows for a highly stable vehicle. The layout maintains the traditional bucket or bench style seats as found in today's automobiles, and yet allows for weighting and cockpit adaptability for different market demographics.