Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Respirators

A respirator, air inhalation technology, applied in the field of respirator, can solve problems such as attacking eyes

Inactive Publication Date: 2005-06-29
THE SEC OF STATE FOR DEFENCE IN HER BRITANNIC MAJESTYS GOVERNMENT OF THE UK OF GREAT BRITAIN & NORTHERN IRELAND
View PDF0 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this type of respirator, there is also a disadvantage that any contaminated air that leaks into the mask will flow through the eyepiece and attack the eyes

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Respirators

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] see figure 1 , the respirator 1 comprises in its body two separate inner masks 2, 3 forming a mask cavity 4 inside the outer mask. Both the eye mask 2 and the oronasal mask 3 have seals 5, 6 respectively, ensuring a tight and substantially airtight fit with the wearer. Inspiratory air is drawn in from the outside 7 through ducts 8 , 9 and flows through the eye mask 2 before being drawn into the oronasal mask 3 . The exhaled air is exhausted to the outside 7 through the valve 10 . The eyepiece of the eyepiece forms the eyepiece of the respirator, and the outer shield is sealed around the periphery of the eyepiece.

[0023] The inlet conduit 9 leading to the oronasal mask is provided with a one-way valve 11 and a second valve 12, which is spring-loaded so that it opens after the main valve 10 is opened and closes before the main valve closes, i.e. , which turns on during the time frame of the expiratory portion of the breathing cycle. This second valve 12 allows exhal...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A respirator ( 1 ) having a plurality of internal masks ( 2, 3 ) within an external mask ( 4 ), the inner masks ( 2, 3 ) being linked by ducts ( 8, 9 ) so as to direct the inhaled air from the outside of the mask to the oronasal area via an ocular mask. The oronasal mask ( 3 ) has a secondary valve ( 12 ) that is sprung so as to operate within the timeframe of the exhalation part of the breathing cycle, the exhaled air being ejected into the hollow outer body of the mask ( 4 ).

Description

technical field [0001] The present invention relates to respirators and provides a respirator with a different inner facepiece to give additional protection to the wearer, the respirator is designed to use inhaled and exhaled air to increase the effectiveness of the respirator. Background technique [0002] Respirators allow workers to work in hazardous environments with airborne contaminants, and respirators typically rely on the wearer's exhaled air to create a positive pressure inside the mask. Thus, if any leaks occur where the mask forms a seal with the wearer's head, or if the seal of the mask is breached, exhaled air will flow out of the mask, thereby purifying the mask and carrying away any contaminated ambient air. [0003] However, upon inhalation, the pressure in conventional respirators drops below ambient so that inward leaks can occur allowing contaminants to enter the interior of the mask. Any contaminants inside the mask can cause injury or discomfort to the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): A62B18/04A62B18/02
CPCA62B18/02
Inventor 克里斯多弗·罗德尼·比
Owner THE SEC OF STATE FOR DEFENCE IN HER BRITANNIC MAJESTYS GOVERNMENT OF THE UK OF GREAT BRITAIN & NORTHERN IRELAND
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com