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Portable floor air duct

  • US 4,967,646 A
  • Filed: 06/05/1989
  • Issued: 11/06/1990
  • Est. Priority Date: 06/05/1989
  • Status: Expired due to Fees
First Claim
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1. An air deflector for deflecting air exiting from a residential floor vent to a location remote therefrom, comprising:

  • a first element having an inverted u-shaped cross section formed by a central wall panel and a pair of side walls depending from opposite longitudinal edges thereof;

    an end wall pane depending from said central wall panel and joining said side walls to form an inlet end;

    a second element having an inverted u-shaped cross section formed from a central wall and a pair of side walls depending from opposite longitudinal edges thereof, said second element being dimensioned to engage in telescoping fashion with said first element with said central walls in abutment so that one end of said second element extends beyond said first element to form an outlet end;

    the side and end walls of said first element terminate at a first flange, a portion of which is arranged to lie flat on a floor surface surrounding said floor vent;

    said portion extending the perimeter of said first element;

    each of the side walls of said second element terminate at a second flange which is arranged to lie flat against said floor surface;

    said second flange being arranged to be nested with said first flange when said first and second elements are telescopingly engaged, said first and second flanges constituting means to minimize air loss between said flanges and said floor surface;

    each of the first flanges has an inner web, said portion is an outer web which is stepped from said inner web toward said floor surface;

    said second flange being dimensioned to lie in nested relationship with said inner and outer webs.

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