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Respirator assembly with air flow direction control

A respirator, air flow technology, applied in respiratory protection containers, respirators, caps, etc., can solve problems such as dry eyes and user discomfort

Inactive Publication Date: 2010-12-08
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In some cases, the specific distribution of air flow may actually cause discomfort to the user, such as drying out the user's eyes

Method used

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  • Respirator assembly with air flow direction control
  • Respirator assembly with air flow direction control
  • Respirator assembly with air flow direction control

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] Glossary

[0024] The terms described below have the following meanings:

[0025] The terms hood and headgear are used to refer to a loose-fitting mask that covers at least the user's face.

[0026] The terms helmet, hard hat and crash cap are used to refer to head coverings designed to provide varying degrees of impact protection to the user's head, with a helmet providing the highest degree of protection and a crash cap providing the least degree of protection.

[0027] Non-shape stable refers to a structural feature by which a structure can assume a shape but not necessarily retain that shape by itself without additional support.

[0028] Dimensionally stable refers to a structural feature by which a structure can have a defined shape and itself retain that shape, but it can also be flexible.

[0029] Breathable air space refers to the space around at least the nose and mouth of a user in which air can be breathed.

[0030] A protective enclosure is a barrier th...

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PUM

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Abstract

A respirator assembly has a shell that defines a breathable air space for a user wearing the respirator assembly. The respirator assembly has an air delivery conduit within the shell for providing air to the breathable air space. The air delivery conduit has an air outlet that is either adjustable in configuration or has a vane associated therewith that is adjustable in position so that the direction of the air exiting the air outlet is controllable between first and second air flow directions. The user is able to control the direction of air exiting the air outlet while the respirator assembly is worn by the user.

Description

Background technique [0001] The present disclosure generally relates to respirator devices worn on the head of a user to provide breathable air to the user. [0002] Respirators are well known and have many uses. For example, certain types of respirators may be used to assist a user in breathing in polluted atmospheres, such as smog-filled atmospheres, fire or dust-laden atmospheres, mines, toxic atmospheres or laboratories. Respirators are also worn where it is necessary to prevent the user from contaminating the surrounding atmosphere, such as when working in a clean room where silicone chips are manufactured. [0003] Some respirators include a hard shell portion to provide some protection against impact when working in hazardous environments or where the user is at risk of being hit by falling or thrown debris, such as in mines, industrial settings or construction sites. When it is believed that head impact protection is not required, such as when working in a laboratory...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62B18/04
CPCA62B18/045A42B3/286A62B18/003
Inventor 德斯蒙德·T·柯伦安德鲁·墨菲加里·J·沃克
Owner 3M INNOVATIVE PROPERTIES CO