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    • 5. 发明授权
    • Service life indicator for respirator cartridge
    • 呼吸器筒使用寿命指示
    • US06497756B1
    • 2002-12-24
    • US09659296
    • 2000-09-12
    • Len CuradoEdna M. deMedeiros
    • Len CuradoEdna M. deMedeiros
    • B01D5304
    • B01D53/0454A62B18/088B01D53/0415B01D53/06B01D2253/102B01D2257/2045B01D2257/2047B01D2259/4541Y10S55/33Y10S55/34Y10S55/35
    • A rotationally adjustable respirator cartridge having a self-contained end of service life indicator adjacent the interior of a sidewall of the cartridge shell and in contact with the filter medium provides a color-changing display field that is visible to the wearer of the respirator through a transparent portion of the sidewall. A display window is defined by an opaque border area that surrounds the sensor display field and obscures a predetermined portion of the downstream end of the indicator to provide a desired margin of safety to the wearer. In order to permit the wearer to rotationally position the color-changing display field in the line of sight through the transparent portion of the respirator facepiece, the cartridge is provided with a rotatable mounting assembly that is continuously rotatable in one direction and that forms a seal with the cartridge shell.
    • 旋转可调节的呼吸器筒具有与消毒筒壳体的侧壁内部相邻并与过滤介质接触的独立的使用寿命指示端,提供一种颜色变化显示区域,其通过呼吸器的佩戴者可见 侧壁的透明部分。 显示窗口由围绕传感器显示区域的不透明边界区域限定,并遮蔽了指示器的下游端的预定部分,以向佩戴者提供期望的安全边界。 为了使佩戴者能够通过呼吸器面罩的透明部分将变色显示区域旋转地定位在视线内,盒设置有可旋转的安装组件,其可沿一个方向连续地旋转并且形成密封 与墨盒外壳。