Abstract: A modular, expandable, low-weight electric motor has a cylindrical, non-magnetic casing formed in axially-aligned sections. The casing sections are releasably connected to define a unitary structure with a polygonal exterior surface and a circular interior surface. Separate U-shaped stator pole assemblies are releasably mounted against the exterior of the casing, each casing section carrying the poles associated with a different motor phase. The poles extend through apertures into the interior of the casing, and have active pole faces which are curved and substantially flush with the circular interior surface of the casing. A modular rotor is mounted in the interior of the casing and carries magnetic elements in axially spaced-apart sets corresponding to each motor phase. The active faces of the magnetic elements are curved and oriented in a cylindrical arrangement.

Abstract: A vehicle includes a carriage suspended with wheels from an overhead track. A suspension mechanism supports a passenger or cargo car from the carriage. The suspension mechanism includes horizontal pivot joint that allows the car to swing about a horizontal axis when traversing bends. A sliding connection between the car and the pivot joint permits the car to displace horizontally relative to the pivot axis. A motor rotates a screw thread mechanism to produce such displacement. A sensor detects inclination of the car relative to vertical in response to uneven weight distribution or wind forces, but is not responsive to centrifugal forces and normal swinging of the car at bends. The sensed inclination of the car may be displayed on a monitor, and controls permit the motor to be actuated to displace the car in a direction in which gravity applies a torque to the car that reduces undesired inclination.