Method of air filtration for fire fighter emergency smoke inhalation
protection
    1.
    发明授权
    Method of air filtration for fire fighter emergency smoke inhalation protection 失效
    消防员应急烟雾吸入保护的空气过滤方法

    公开(公告)号:US5524616A

    公开(公告)日:1996-06-11

    申请号:US379339

    申请日:1995-01-27

    摘要: A method of emergency smoke inhalation protection of fire fighters in imminent life-threatening situations includes configuring a canister containing a filter medium to evidence use. The canister has an opening through which air enters and has a coupling for attachment to the mask of a standard self contained breathing apparatus in place of a connection to an air tank. When so connected, air drawn into the mask passes through the filter medium within said canister. A use-evidencing mechanism is operatively connected to the canister to indicate use of the air filtering system. This mechanism can be non-reusable covers applied over the opening and coupling, or a sealed package containing the air filtering system. Such devices provide an indication of previous use of the filtering system and inhibit a fire fighter from using the system in an unauthorized manner.

    摘要翻译: 在即将面临危及生命的情况下,消防员应急烟雾吸入保护的方法包括配置一个含有过滤介质的罐以证明使用。 罐具有开口,空气进入该开口,并且具有用于附接到标准自给式呼吸器的面罩的联接件,代替与空气罐的连接。 当连接时,吸入面罩的空气通过所述罐内的过滤介质。 使用证明机构可操作地连接到罐以指示空气过滤系统的使用。 该机构可以是通过开口和联接器施加的不可重复使用的盖子,或者是包含空气过滤系统的密封包装。 这样的装置提供先前使用过滤系统的指示,并且禁止消防员以未经授权的方式使用系统。

    Face mask with back-up smoke inhalation protection and method of
operation
    2.
    发明授权
    Face mask with back-up smoke inhalation protection and method of operation 失效
    面罩配备备用吸烟保护及操作方法

    公开(公告)号:US5964218A

    公开(公告)日:1999-10-12

    申请号:US652664

    申请日:1996-05-28

    摘要: A self-contained breathing apparatus for emergency response personnel has face mask with a first port connected by a hose to a tank of compressed air. Back-up smoke inhalation protection is provided for imminent life-threatening situations by configuring a face mask with a canister containing a filter medium, an inlet opening through which air enters and an outlet coupling for attachment to a second port of the face mask. In normal situations the mask is supplied with air from the tank, but should the tank supply become depleted, the canister can be activated. A use-evidencing mechanism is operatively connected to the canister to indicate use of the air filtering system. This mechanism may be a non-reusable cover applied over the inlet opening and/or a valve in the second port of the face mask with a portion that breaks away upon opening of the valve. Such mechanisms provide an indication of previous use of the filtering system and inhibit a fire fighter from using the system in an unauthorized manner, in less than an imminent life-threatening situation.

    摘要翻译: 用于应急人员的自给式呼吸器具有面罩,第一端口通过软管连接到压缩空气罐。 为即将面临危及生命的情况提供备用烟雾吸入保护,通过配置包含过滤介质的容器,空气进入的入口和用于附接到面罩的第二端口的出口连接件的面罩。 在正常情况下,面罩从罐中提供空气,但是如果油箱供应耗尽,则可以启动油罐。 使用证明机构可操作地连接到罐以指示空气过滤系统的使用。 该机构可以是施加在入口开口上的不可重复使用的盖和/或在面罩的第二端口中的阀,其中一部分在阀打开时会脱落。 这种机制提供了先前使用过滤系统的指示,并且在不到即将到来的危及生命的情况下禁止消防员以未经授权的方式使用该系统。