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Inflatable cushions

  • US 6,015,471 A
  • Filed: 04/30/1998
  • Issued: 01/18/2000
  • Est. Priority Date: 05/15/1997
  • Status: Expired due to Fees
First Claim
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1. An inflatable lifting cushion comprising:

  • (a) plurality of inflatable segments including a first segment superimposed on a second segment, wherein each segment comprises a ring chamber (11) around a central web (12),(b) segments are bonded together at a junction between the ring chambers so that a central chamber (14) is formed between the central webs (12);

    (c) all said chambers are pneumatically interconnected and(d) an inlet (30) is attached to the cushion for inflating said chambers in unison.

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