Massaging apparatus with micro controller using pulse width modulated signals

  • US 6,077,238 A
  • Filed: 02/29/1996
  • Issued: 06/20/2000
  • Est. Priority Date: 02/29/1996
  • Status: Expired due to Term
First Claim
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1. A massaging apparatus comprising:

  • a foam cushion defining a plurality of spatially separated regions each region having a foam core with a plurality of apertures;

    at least one electric DC motor disposed in each of the plurality of apertures for rotating in response to an electrical signal to provide localized vibration to an associated region of the cushion;

    a hand-held controller in electrical communication with the DC motors, the controller including;

    a microprocessor executing program instructions for receiving input from a user indicative of a desired vibration intensity, duration, and region for selectively energizing the DC motors based on the desired intensity, duration, and region by generating a pulse train including a plurality of groups of pulses separated by regular intervals of no pulses where each pulse has a variable duty cycle based on the desired intensity and each group of pulses has a number of pulses based on the desired duration, the microprocessor including a plurality of input/output ports;

    a plurality of indicator lights each corresponding to one of the plurality of regions, the indicator lights being in electrical communication with the microprocessor; and

    a plurality of input devices for selecting at least an operating mode and an intensity of vibration, the input devices being in electrical communication with the microprocessor, wherein the number of indicator lights added to the number of input devices exceeds the total number of input/output ports of the microprocessor.

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