Abstract: In all vacuum cleaners, the head of the vacuum is the source of particle removal. With this mechanism, the min vacuum pressure can be reached at zero atmosphere, and it takes the particles from the floor and guide them through the vacuum line. The generation of a zero-atmosphere pressure requires a high speed and high current AC/DC motor air turbine, which creates lots of noise and consumes high amounts of energy. The new idea in this patent proposes an injection of pressurized air inside of the vacuum cleaner head chamber to lift up the particles easily and guide them towards the vacuum line. This mechanism, which does not present any limitations of high-pressure generation, will provide higher electrical efficiency, lower noise production, and much cleaner performance.

Abstract: A motor actuator includes multiple rotors and stators arranged in an alternating configuration. Each rotor is located between two adjacent stators. Each rotor includes magnets assembled on a shaft. The stators are secured to a housing, and each stator has multiple coils embedded as traces within a printed circuit board (PCB). The motor actuator can function as a stepper motor, a continuous BLDC motor, a rotary absolute position encoder, an electricity generator, and a continuous torque meter in a single unit. A stacked configuration for the PCB motor results in a compact design, high torque output, low weight, and high efficiency.