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Dynamic combination seating and backrest support system

  • US 5,678,891 A
  • Filed: 08/19/1996
  • Issued: 10/21/1997
  • Est. Priority Date: 11/14/1995
  • Status: Expired due to Fees
First Claim
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1. A dynamically inflatable support system comprising:

  • a seat cushion having first and second mating sets of inflatable cells, the first set including a pair of spaced-apart elongate longitudinal cells extending along a cushion axis corresponding to the longitudinal axis of a person supported on the support system, the second set including inner cell means positioned between the pair of longitudinal cells, at least one of the first and second sets of cells further including transverse cell means extending laterally between the longitudinal cells intermediate the ends of the longitudinal cells;

    pressure means for alternatingly inflating and deflating the first and second sets of cells so that a person seated on the seat cushion is supported primarily by alternate sets of cells; and

    a back cushion adapted for extending upwardly along the back of a chair when the support system is positioned on a chair with the seat cushion on the chair seat, the back cushion including two sets of interdigitated elongate laterally extending back cells, with the cells in the two sets alternating in position along the cushion axis, and wherein the pressure means alternately inflates and deflates the first and second sets of back cells.

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