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    Wheelchair cushion utilizing foams of different stiffnesses
    1.
    发明授权
    Wheelchair cushion utilizing foams of different stiffnesses 失效
    轮椅坐垫采用不同刚度的泡沫

    公开(公告)号：US5442823A

    公开(公告)日：1995-08-22

    申请号：US1381

    申请日：1993-01-06

    申请人： Allen R. Siekman ,  Julius E. Nachod, III

    发明人： Allen R. Siekman ,  Julius E. Nachod, III

    IPC分类号： A47C7/02 ,  A61G5/10 ,  A47C27/15

    CPC分类号： A47C7/022 ,  A61G5/1045 ,  Y10S297/01

    摘要： A polyurethane foam wheelchair cushion comprises first, second, third and fourth elements. The first element extends across the front portion of the cushion and is made of a relatively stiff foam. The second element is centered near the back portion of the cushion and is made of a foam with a lower stiffness than the first element. Third and fourth elements are on either side of the second element and are made of a foam having an intermediate stiffness between the first element and the second element. Transition surfaces between the second and third and fourth elements are angled relative to a vertical plane. Such an angled transition surface provides a gradual change in stiffness in the vertical direction between materials of different stiffnesses. The top surface of the first element is oriented relative to the second element so that the user's ischial tuberosities will be located approximately 1.5 inches lower than the back surface of the user's thighs when the user is sitting in the wheelchair cushion.

    摘要翻译： 聚氨酯泡沫轮椅垫包括第一，第二，第三和第四元件。 第一元件延伸穿过垫子的前部，并且由相对较硬的泡沫制成。 第二元件位于靠垫的后部附近，并且具有比第一元件低的刚性的泡沫。 第三和第四元件位于第二元件的两侧，并且由在第一元件和第二元件之间具有中间刚度的泡沫制成。 第二和第三和第四元件之间的过渡表面相对于垂直平面成角度。 这种倾斜的过渡表面提供了在不同刚度的材料之间垂直方向上刚性的逐渐变化。 第一元件的顶表面相对于第二元件定向，使得当使用者坐在轮椅垫中时，使用者的坐骨结节将位于比使用者的大腿的后表面低约1.5英寸处。

    Seat cushion for wheelchairs
    2.
    发明授权
    Seat cushion for wheelchairs 失效
    轮椅座垫

    公开(公告)号：US5378045A

    公开(公告)日：1995-01-03

    申请号：US108827

    申请日：1993-08-18

    申请人： Allen R. Siekman ,  Julius E. Nachod, III

    发明人： Allen R. Siekman ,  Julius E. Nachod, III

    IPC分类号： A47C4/54 ,  A61G5/10 ,  A47C7/02

    CPC分类号： A61G5/1043 ,  A61G5/1045 ,  A61G5/1091 ,  Y10S297/01 ,  Y10S297/06

    摘要： A seat cushion for use in a wheelchair comprises a shaped tray and a filled envelope. The envelope is filled with a fluid like material which is flowably displaceable under the weight of a user. The shaped tray comprises a recess for receiving the buttocks region of the user as well as a front edge over which the legs of the user extend. A back wedge is mounted along a back edge of the tray and keeps the filled envelope from sliding over the back edge of the tray. Further, side wings located at the sides of the shaped tray near its front edge help constrain the legs of the wheelchair user in a generally forward direction within the width of the wheelchair seat. Side wedges mounted on the underside of the seat are selectively removable to accommodate the presence of a cross brace mechanism, as is commonly used in drop seat wheelchairs.

    摘要翻译： 用于轮椅的座垫包括成形托盘和填充的信封。 信封充满流体状材料，其在使用者的重量下可流动地移动。 成型托盘包括用于接收使用者的臀部区域的凹部以及使用者的腿部延伸穿过的前边缘。 后楔形物沿着托盘的后边缘安装，并使填充的信封保持在托盘的后边缘上滑动。 此外，位于成形托盘的靠近其前边缘的侧面的侧翼有助于在轮椅座椅的宽度内大致向前的方向约束轮椅使用者的腿部。 安装在座椅下侧的侧楔可以选择性地拆卸，以适应十字支架机构的存在，如落座座椅轮椅中常用的那样。

    Wheelchair seating system including trapezoidally sectioned fluid bag
    5.
    发明授权
    Wheelchair seating system including trapezoidally sectioned fluid bag 失效
    轮椅座椅系统，包括梯形切片流体袋

    公开(公告)号：US5933891A

    公开(公告)日：1999-08-10

    申请号：US66214

    申请日：1998-04-24

    申请人： Julius E. Nachod, III

    发明人： Julius E. Nachod, III

    IPC分类号： A61G5/10 ,  A61G7/057 ,  A47C27/18 ,  A47C7/02

    CPC分类号： A61G5/1043 ,  A61G5/1045 ,  A61G7/05715

    摘要： The present invention relates to a seat cushion assembly for use, in particular, in a wheelchair. The assembly includes a sculpted or molded foam base having exterior sidewalls profiled to accommodate a wheelchair frame, and a seating surface to provide some positioning support to the occupant. Further, the base includes a well area to be positioned under the ischial tuberosities of the occupant and including means for the removable attachment of a flexible envelope containing a fluid filling material. The envelope is comprised of upper and lower elastomeric sheet materials sealed about the perimeter. It is divided by internal seal sections so as to inhibit fluid migration within the envelope. These internal seals define a tapering flow orifice which provide for gradual restriction of a flow channel to permit flow so as to avoid failure inhibiting fluid migration. The envelope has a surface area which exceeds the surface area of the well and includes attachment means on the bottom side to encourage a gathering of the envelope into the well for proper cushioning effect. In addition, the assembly can include a rigidizer to enable the cushion to be used in a sling-type wheelchair seat.

    摘要翻译： 本发明涉及一种特别用于轮椅使用的座垫组件。 组件包括雕刻或模制的泡沫基座，其具有轮廓以容纳轮椅框架的外侧壁，以及座椅表面，以向乘员提供一些定位支撑。 此外，基部包括定位在乘客的坐骨结节之下的井区域，并且包括用于可移除地附接包含流体填充材料的柔性外壳的装置。 外壳由围绕周边密封的上部和下部弹性体片材组成。 它被内部密封部分分隔，以便抑制在信封内的流体迁移。 这些内部密封件限定了锥形流动孔口，其提供流动通道的逐渐限制以允许流动，以避免阻碍流体迁移的故障。 信封具有超过井的表面积的表面积，并且包括在底侧的附接装置，以鼓励将信封聚集到井中以获得适当的缓冲效果。 此外，组件可以包括刚性器，以使得衬垫能够用于吊索式轮椅座椅中。