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    Pneumatic wheel chair cushion for reducing ischemic injury
    1.
    发明授权
    Pneumatic wheel chair cushion for reducing ischemic injury 失效
    气动轮椅垫减少缺血性损伤

    公开(公告)号：US5193237A

    公开(公告)日：1993-03-16

    申请号：US647031

    申请日：1991-01-28

    申请人： Terry K. Holdredge

    发明人： Terry K. Holdredge

    IPC分类号： A47C27/08 ,  A61G5/10 ,  A61G7/057

    CPC分类号： A61G5/1043 ,  A61G5/1045 ,  A61G5/1091 ,  A61G7/05784 ,  A61G7/05776 ,  Y10S297/08 ,  Y10T137/86501 ,  Y10T137/86509 ,  Y10T137/86517

    摘要： A pneumatic cushion for a wheel chair and the like is disclosed which comprises an air plenum box, a plurality of air openings in the air plenum box, and a plurality of air channels communicating with an air supply. The air channels communicate with the air openings to deflate and inflate individual air sacks carried over the air openings. The air sacks are unattached so that they act individually. An air distribution manifold includes a rotating blocking member to periodically block air distribution to the air sacks allowing them to deflate. The air sacks are constructed from a fabric having a low air permeability. The blocked air sacks thus allow air to escape through the sacks for deflation which cools the portion of the occupant seated on the cushion while allowing temporary pressure relief during deflation. The air sack inflation system is open so that, in addition, pressure may be relieved by a backward flow of air through the system. For this purpose, the blocking member which selectiely blocks air flow to the air sacks, is in the form of a one-way valve which blocks air in a first direction, but opens in a second direction to allow a bleed-off of air from the sacks should excessive pressures exist in the sacks such as caused by an occupant's weight shift and the like.

    摘要翻译： 公开了一种用于轮椅等的气垫，其包括空气增压箱，空气增压箱中的多个空气开口以及与空气源连通的多个空气通道。 空气通道与空气开口连通，以对通过气孔开放的单个空气袋进行放气和充气。 空气袋不附着，使它们单独作用。 空气分配歧管包括旋转的阻挡构件，以周期性地阻止空气分配到空气袋，从而允许它们放气。 空气袋由具有低透气性的织物构成。 堵塞的空气袋因此允许空气通过袋子逸出，用于放气，其冷却坐在垫子上的乘员的部分，同时在放气期间允许暂时的压力释放。 空气袋通风系统是开放的，此外，空气通过系统的逆流可以减轻压力。 为此目的，选择性地阻挡空气流向空气袋的阻塞构件是单向阀的形式，其阻止空气在第一方向上，但是在第二方向上打开以允许空气从第 麻袋应该由于乘客重量等引起的麻袋中存在过大的压力。

    Pneumatic wheel chair cushion for reducing ischemic injury
    3.
    发明授权
    Pneumatic wheel chair cushion for reducing ischemic injury 失效
    气动轮椅垫减少缺血性损伤

    公开(公告)号：US5533217A

    公开(公告)日：1996-07-09

    申请号：US368375

    申请日：1995-01-04

    申请人： Terry K. Holdredge

    发明人： Terry K. Holdredge

    IPC分类号： A47C27/08 ,  A61G5/10 ,  A61G7/057 ,  A47C27/10

    CPC分类号： A61G5/1043 ,  A61G5/1045 ,  A61G5/1091 ,  A61G7/05784 ,  A61G7/05776 ,  Y10S297/08 ,  Y10T137/86501 ,  Y10T137/86509 ,  Y10T137/86517

    摘要： A pneumatic cushion for a wheel chair and the like is disclosed which comprises an air housing box, a plurality of air openings in the air housing box, and a plurality of air channels communicating with an air supply. The air channels communicate with the air openings to deflate and inflate individual air sacks carried over the air openings. The air sacks are unattached so that they act individually. An air distribution manifold includes a rotating blocking member to periodically block air distribution to the air sacks allowing them to deflate. The air sacks are constructed from a fabric having a low air permeability. The blocked air sacks thus allow air to escape through the sacks for deflation which cools the portion of the occupant seated on the cushion while allowing temporary pressure relief during deflation. The air sack inflation system is open so that, in addition, pressure may be relieved by a backward flow of air through the system. For this purpose, the blocking member which selectively blocks air flow to the air sacks, is in the form of a one-way valve which blocks air in a first direction, but opens in a second direction to allow a bleed-off of air from the sacks should excessive pressures exist in the sacks such as caused by an occupant's weight shift and the like.

    摘要翻译： 公开了一种用于轮椅等的气垫，其包括空气容纳箱，空气容纳箱中的多个空气开口以及与空气源连通的多个空气通道。 空气通道与空气开口连通，以对通过气孔开放的单个空气袋进行放气和充气。 空气袋不附着，使它们单独作用。 空气分配歧管包括旋转的阻挡构件，以周期性地阻止空气分配到空气袋，从而允许它们放气。 空气袋由具有低透气性的织物构成。 堵塞的空气袋因此允许空气通过袋子逸出，用于放气，其冷却坐在垫子上的乘员的部分，同时在放气期间允许暂时的压力释放。 空气袋通风系统是开放的，此外，空气通过系统的逆流可以减轻压力。 为此，选择性地阻挡空气流向空气袋的空气流动的阻挡构件为单向阀的形式，该单向阀在第一方向上阻挡空气，但在第二方向上打开以允许空气从第 麻袋应该由于乘客重量等引起的麻袋中存在过大的压力。

    Pneumatic wheel chair cushion for reducing ischemic injury
    5.
    发明授权
    Pneumatic wheel chair cushion for reducing ischemic injury 失效
    气动轮椅垫减少缺血性损伤

    公开(公告)号：US5379471A

    公开(公告)日：1995-01-10

    申请号：US29832

    申请日：1993-03-11

    申请人： Terry K. Holdredge

    发明人： Terry K. Holdredge

    IPC分类号： A61G5/10 ,  A61G7/057 ,  A47C27/08

    CPC分类号： A61G5/1043 ,  A61G5/1045 ,  A61G5/1091 ,  A61G7/05784 ,  A61G7/05776 ,  Y10S297/08

    摘要： A pneumatic cushion for a wheel chair and the like is disclosed which comprises an air housing box, a plurality of air opening sin the air housing box, and a plurality of air channels communicating with an air supply the air channels communicate with the air openings to deflate and inflate individual air sacks carried over the air openings. The air sacks are unattached so that they act individually. An air distribution manifold includes a rotating blocking member to periodically block air distribution to the air sacks allowing them to deflate. The air sacks are unattached so that they act individually. An air distribution manifold includes a rotating blocking member to periodically block air distribution to the air sacks allowing them to deflate. The air sacks are constructed from a fabric having a low air permeability. The blocked air sacks thus allow air to escape through the sacks for deflation which cools the portion of the occupant seated on the cushion while allowing temporary pressure relief during deflation. The air sack inflation system is open so that, in addition, pressure may be relieved by a backward flow of air through the system. For this purpose, the blocking member which selectively blocks air flow to the air sacks, is in the form of a one-way valve which blocks air in a first direction, but opens in a second direction to allow a bleed-off of air from the sacks should excessive pressures exist in the sacks such as caused by an occupant's weight shift and the like.

    摘要翻译： 公开了一种用于轮椅等的气垫，其包括空气容纳箱，多个空气开口，空气容纳箱，以及多个空气通道，空气通道与气源连通，空气通道与空气开口连通， 将通风口上的各个气袋放气并充气。 空气袋不附着，使它们单独作用。 空气分配歧管包括旋转的阻挡构件，以周期性地阻止空气分配到空气袋，从而允许它们放气。 空气袋不附着，使它们单独作用。 空气分配歧管包括旋转的阻挡构件，以周期性地阻止空气分配到空气袋，从而允许它们放气。 空气袋由具有低透气性的织物构成。 堵塞的空气袋因此允许空气通过袋子逸出，用于放气，其冷却坐在垫子上的乘员的部分，同时在放气期间允许暂时的压力释放。 空气袋通风系统是开放的，此外，空气通过系统的逆流可以减轻压力。 为此，选择性地阻挡空气流向空气袋的空气流动的阻挡构件为单向阀的形式，该单向阀在第一方向上阻挡空气，但在第二方向上打开以允许空气从第 麻袋应该由于乘客重量等引起的麻袋中存在过大的压力。