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    UNIDIRECTIONAL VALVES AND FILTERING FACE MASKS COMPRISING UNIDIRECTIONAL VALVES
    5.
    发明申请
    UNIDIRECTIONAL VALVES AND FILTERING FACE MASKS COMPRISING UNIDIRECTIONAL VALVES 失效
    独立阀门和过滤面罩包括单向阀

    公开(公告)号：US20110139158A1

    公开(公告)日：2011-06-16

    申请号：US12639356

    申请日：2009-12-16

    申请人： Thomas J. Xue ,  Michael K. Domroese ,  Philip G. Martin ,  Nathan A. Abel

    发明人： Thomas J. Xue ,  Michael K. Domroese ,  Philip G. Martin ,  Nathan A. Abel

    IPC分类号： A62B18/10

    CPC分类号： A62B18/10 ,  A62B18/025 ,  Y10T137/7891

    摘要： A unidirectional valve for use with a filtering face mask. The valve can include a flap, and a valve seat. The flap can be cantilevered and can flex away from a seal surface of the valve seat to an open position. The valve can further include a housing that at least partially covers the valve seat and the flap. In some embodiments, the height of the housing is no greater than about 1.25 cm, while the distance between the flap and the seal surface when the flap is in the open position is at least 0.35 cm. A projection can be coupled to an inner surface of the housing, and the height of the projection can generally decrease toward the front of the housing. In some embodiments, the projection can have a profile that substantially follows the profile of the flap when the flap is in the open position.

    摘要翻译： 用于过滤面罩的单向阀。 阀可以包括挡板和阀座。 翼片可以是悬臂的，并且可以从阀座的密封表面弯曲到打开位置。 阀还可以包括至少部分地覆盖阀座和挡板的壳体。 在一些实施例中，壳体的高度不大于约1.25cm，而当翼片处于打开位置时，翼片和密封表面之间的距离为至少0.35cm。 突起可以联接到壳体的内表面，并且突起的高度通常可以朝向壳体的前部减小。 在一些实施例中，当翼片处于打开位置时，突起可以具有基本上沿着翼片的轮廓的轮廓。