Inflatable cushion Patent #: 4161794
ApplicationNo. 06/018720 filed on 03/08/1979
US Classes:5/713, Variably pressurizable chambers (e.g., with pump)5/691, Supported on or removably attachable to another mattress5/714, With substantial ventilation or gas loss601/148, Flexible membrane caused to move by fluid pressure601/158Couch, chair, bath, or other support
ExaminersPrimary: Grosz, Alexander
Attorney, Agent or Firm
International ClassesA61G 7/057 (20060101)
A61H 9/00 (20060101)
AbstractAn inflatable mattress having top and bottom sheets of thin vinyl material heat-sealed together to form a plurality of transversely extending inflatable ribs. The ribs are generally arcuate in shape so as to have a directional component in the longitudinal direction of the mattress. The ribs are arranged in two groups, each composed of alternate ribs, and the groups are alternately inflated.