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Acoustic communicator for central vacuum cleaners

  • US 5,924,164 A
  • Filed: 10/05/1998
  • Issued: 07/20/1999
  • Est. Priority Date: 06/07/1995
  • Status: Expired due to Fees
First Claim
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1. An arrangement for controlling a central vacuum cleaner comprising a central machinery and a pipe system connecting said machinery to a remote working point, in which arrangement the said machinery is activated when a particular acoustic signal is transmitted from the working point to the central machinery through the pipe system even when air is flowing through the pipe system, with such arrangement comprising:

  • a) means for generating a continuous acoustic signal during such time as continuous operation of the central machinery of said central vacuum cleaner is desired;

    b) a pipe system for transmitting said signal from the working point to the central machinery;

    c) means for detecting said signal near the central machinery; and

    d) means for activating the central machinery when said signal is detected, with activation ceasing when detection of said signal ceases.

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