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Electric motor control for vacuum cleaner

  • US 4,370,777 A
  • Filed: 11/28/1980
  • Issued: 02/01/1983
  • Est. Priority Date: 11/28/1979
  • Status: Expired due to Term
First Claim
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1. A vacuum cleaner comprising:

  • a housing having a suction nozzle orifice;

    a cylindrical brush rotatably mounted by said housing in said orifice;

    a first motor drivingly connected to said brush for rotating said brush;

    a suction motor connected to produce suction through said nozzle shaped orifice;

    a power source;

    an rpm control device connected to said power source; and

    switch means for connecting said first motor and said suction motor individually either to said rpm control device or directly to said power source, whereby said first motor and said suction motor can be connected;

    in parallel with each other to said rpm control device;

    in parallel with each other directly to said power source; and

    separately with one of said motors connected to said rpm control device and the other of said motors connected directly to said power source.

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