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Portable pneumatic seating device

  • US 9,408,477 B1
  • Filed: 06/15/2015
  • Issued: 08/09/2016
  • Est. Priority Date: 06/16/2014
  • Status: Active Grant
First Claim
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1. An inflatable seat cushion device for supporting an occupant above a horizontally disposed support surface, comprising:

  • a power source;

    at least one air compressor;

    a distribution manifold configured to receive compressed air from the at least one air compressor, and to selectively distribute the compressed air to a plurality of ports;

    a mechanism to selectively relieve a pressure at the plurality of ports;

    a plurality of inflatable chambers, each having a flexible wall, a conduit communicating air with a respective port, each inflatable chamber having a pressure responsive to an amount of air within the respective inflatable chamber, the plurality of inflatable chambers comprising at least a pair of thigh support chambers, and at least one buttocks support chamber;

    at least one auxiliary chamber having a flexible wall, configured, when inflated through the distribution manifold, to tension the flexible wall to cause at least one portion of the flexible wall to move upward to assume a position generally parallel to the horizontally disposed support surface, and generate a force sufficient to extend a knee of the occupant of the inflatable seat cushion device supported by the horizontally disposed support surface, and when deflated through the mechanism, to assume a position generally perpendicular to the horizontally disposed support surface and permit flexion of the knee of the occupant of the inflatable seat cushion device; and

    a control device, configured to control at least the distribution manifold and the at least one air compressor, having a communication interface configured to receive control information for controlling an operation of at least the air compressor and distribution manifold over time and a memory configured to store at least the received control information.

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