Sensors and associated methods for controlling a vacuum cleaner

  • US 7,424,766 B2
  • Filed: 08/23/2005
  • Issued: 09/16/2008
  • Est. Priority Date: 09/19/2003
  • Status: Active Grant
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First Claim
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1. A cleaning appliance, including:

  • a housing to which is mounted a brushroll and a wheel;

    a mounting tube secured to said housing;

    a floor type sensor, disposed within said mounting tube, for emitting sonic energy toward a surface being traversed by the cleaning appliance and receiving corresponding sonic energy reflected by the surface;

    a comparator, electrically coupled to said sensor, for comparing the received reflected sonic energy to one or more associated predetermined values to determine the type of surface being traversed; and

    a processor that analyzes the results of the comparison and controls at least one of a suction fan, said wheel and said brushroll, based at least in part on the analysis.

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