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    • 64. 发明专利
    • JPH09504443A
    • 1997-05-06
    • JP50700795
    • 1994-08-04
    • A47C7/18A47C4/54A47C7/02A47C27/18A61G5/02A61G5/10
    • A seating system primarily intended for use with wheelchairs. The seating system includes a relatively rigid, shaped tray and a fluid pad. The tray has a forward section to support the user's thighs and a rearward section with a depressed, contoured seating well to support the user's buttocks including his ischial tuberosities. The seating well includes a bottom portion and a U-shaped rim portion extending about it. The fluid pad contains a fixed volume of incompressible fluid and is provided and dimensioned to be bunched up and received in the seating well of the tray. The seating system also includes a self-adjusting feature to automatically and properly fit a user based on his weight. This is accomplished in the preferred embodiments by adding a layer of resilient, compressible foam over the upper surface of the rim portion of the seating well between the fluid pad and the rim portion. The foam is dimensioned and chosen to selectively occupy varying amounts of the volume of the seating well (i.e., creating an effective seating well volume) in proportion to the weight of the user. In all embodiments, the resulting seating system automatically modifies the effective seating well volume of the tray in proportion to the user's weight for a safe and proper fit for all users including both light and heavier ones.