Airflow noise reduction device

A respirator comprising: an air supply unit arranged to deliver air at its output;headgear comprising a cradle for interfacing with a user's head, and a face covering from within which the user breathes;a tube to receive air from the air supply unit; andan interface component to receive air fro...

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Hauptverfasser:	Richard James Alker, Derek Frederick Scholes, Paul Douglas, Simon Anthony Churchman
Format:	Patent
Sprache:	eng
Schlagworte:	ACOUSTICS ACOUSTICS NOT OTHERWISE PROVIDED FOR DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING FIRE-FIGHTING HATS HEAD COVERINGS HEADWEAR HUMAN NECESSITIES LIFE-SAVING METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL MUSICAL INSTRUMENTS PHYSICS SOUND-PRODUCING DEVICES
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creator	Richard James Alker Derek Frederick Scholes Paul Douglas Simon Anthony Churchman
description	A respirator comprising: an air supply unit arranged to deliver air at its output;headgear comprising a cradle for interfacing with a user's head, and a face covering from within which the user breathes;a tube to receive air from the air supply unit; andan interface component to receive air from the tube and to deliver said air within the face covering, wherein the interface component provides a frame for supporting the face covering, and comprises an overhead branch and a forehead branch, wherein the overhead branch comprises one or more bleed holes, such that in use vibrations from the air supply and tube are reduced. Components of the respirator and related methods are also described.
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subjects	ACOUSTICS ACOUSTICS NOT OTHERWISE PROVIDED FOR DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING FIRE-FIGHTING HATS HEAD COVERINGS HEADWEAR HUMAN NECESSITIES LIFE-SAVING METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL MUSICAL INSTRUMENTS PHYSICS SOUND-PRODUCING DEVICES
title	Airflow noise reduction device
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