Concentric Motor Assembly Torque Density

The patent implements nesting by placing the first rotor inside the second rotor, with the first stator inside the second stator, creating a concentric multi-layer structure. This nested configuration allows two complete motor systems to occupy the space of a single conventional motor, effectively doubling the torque output without proportionally increasing the external dimensions.

The patent merges two motor systems into a single integrated assembly where the inner motor (first rotor and first stator) and outer motor (second rotor and second stator) work simultaneously. The shared central axis and coupled output shafts combine the torque contributions of both motors, achieving high torque density through spatial consolidation.

The patent applies universality through shared components that serve multiple functions: the shared central axis provides structural support for both rotors and serves as a common rotational reference; the shared bearing supports both rotors simultaneously; and the output shafts are coupled to transmit combined torque. This multi-functionality reduces the number of separate components needed, managing complexity while maintaining high torque output.

The nested concentric structure inherently simplifies complexity management by organizing multiple motor systems in a hierarchical manner. The inner motor components are contained within the outer motor components, creating a clear spatial hierarchy that facilitates manufacturing, assembly, and maintenance while achieving combined torque output.

The patent applies local quality by implementing different clearance designs in different regions of the motor assembly. The first and second rotors are positioned at different radial distances from the central axis, allowing each rotor-stator interface to have optimized clearances suited to its specific operational requirements. This localized optimization enables compact overall dimensions while maintaining appropriate manufacturing tolerances for each interface.

The nested concentric structure provides inherent mechanical alignment and spacing control. Each rotor is naturally positioned at a fixed radial distance from the central axis, and each stator is positioned relative to its rotor, creating self-aligning interfaces that reduce the stringency of manufacturing precision requirements despite the compact overall volume.