Breathing filter

The invention relates to a breathing filter. The breathing filter comprises an upper housing and a lower housing which are oppositely inserted up and down, wherein the upper housing comprises an uppercover and an air inlet pipe opening formed in the upper cover; the lower housing comprises a lower c...

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Hauptverfasser:	WAN XIMING, TIAN SHUZENG, REN YONGCHENG, CHEN SANLING
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY HUMAN NECESSITIES HYGIENE MEDICAL OR VETERINARY SCIENCE
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creator	WAN XIMING TIAN SHUZENG REN YONGCHENG CHEN SANLING
description	The invention relates to a breathing filter. The breathing filter comprises an upper housing and a lower housing which are oppositely inserted up and down, wherein the upper housing comprises an uppercover and an air inlet pipe opening formed in the upper cover; the lower housing comprises a lower cover and an air outlet pipe opening formed in the lower cover; an annular protrusion which is protruded downwards is arranged at an lower end opening of the upper cover, and forms an outer step annular surface with the outer circumferential surface of the upper cover and forms an inner step annularsurface with the inner circumferential surface of the upper cover; an annular groove which is concaved downwards is formed in the upper end opening of the lower cover, and is in inserting match withthe annular protrusion; annular surfaces of the upper end opening of the lower cover, on two sides of the annular groove, are respectively an inner annular surface and an outer annular surface; and aninterval is formed between
format	Patent
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subjects	DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY HUMAN NECESSITIES HYGIENE MEDICAL OR VETERINARY SCIENCE
title	Breathing filter
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