Pliable-wall air ducts with internal expanding structures

  • US 9,605,865 B2
  • Filed: 05/27/2014
  • Issued: 03/28/2017
  • Est. Priority Date: 11/19/2010
  • Status: Active Grant
First Claim
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1. An air duct system for supporting an air duct, the air duct system comprising:

  • a tubular pliable sidewall defining a flow direction along which the air duct system conveys a current of air;

    a ring disposed within the tubular pliable sidewall and lying substantially perpendicular to the flow direction;

    a hub disposed substantially at a center point of the ring, the hub extending lengthwise in the flow direction; and

    a plurality of spokes extending between the ring and the hub, the plurality of spokes being attached to the hub at a plurality of points that are distributed lengthwise along the hub, the air duct being in tension along the flow direction of the air duct.

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