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Pipe system for central suction cleaning installation

  • US 4,854,887 A
  • Filed: 09/04/1987
  • Issued: 08/08/1989
  • Est. Priority Date: 09/12/1986
  • Status: Expired due to Fees
First Claim
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1. A pipe system for a central suction cleaning installation for connecting a suction station to at least one suction opening, said pipe system having at least one tube made from plastic and equipped with at least one electric conductor of low voltage capability for the transmission of an electric control signal from the suction station, said pipe system having at least one coupling wherein said electric conductor is in the form of a first thin metallic strip made from an electrically conductive material and which is integral with the tube, said coupling having at least one cylindrical socketlike portion with dimensions enabling the tube and said cylindrical portion to be fitted together, one into the other, and electric connection means connected between the first thin strip and another part of the installation, wherein the electrical connection means comprise a conductive band in the form of a second thin metallic strip made from an electrically conductive material, said conductive band extending over part of the periphery of said cylindrical socketlike portion, whereby the arrangement of the first thin strip and conductive band constituted by the second thin strip is such that by fitting together, one into the other, the tube and cylindrical socketlike portion, said first strip can be made to face and engage the second strip and a conductor can be electrically connected to the conductive band and to said other part of the installation, said first and second strips being formed of flexible material of substantially similar dimensions.

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