专利名称：Respiration protecting apparatus发明人：Etsuji Mukaiyama,Nobutaka Takami申请号：US10309444申请日：20021202
公开号：US20040079373A1公开日：20040429
专利附图：
摘要：A respiratory protection apparatus has a face body, and a right side and a leftside of a vertical centerline of the body are respectively provided with filtering deviceseach of which houses an electrical fan unit therein. Without narrowing the field of thefront vision, without increasing the front side weight, and without deteriorating the work
efficiency and comfortable fitting, the apparatus ensures the air flow rate of more than120 liters per minute. Moreover, the electrical fan unit may be detachable from the facebody, so that the face body is easily washed and parts are readily replaced with new ones.
申请人：YAMAMOTO KOGAKU CO., LTD.
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