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Respirator facepieces

A respirator and mask technology, applied in the direction of respiratory masks, respiratory protection containers, respiratory protection devices, etc., can solve the problems of complicated assembly and maintenance of masks, etc.

Inactive Publication Date: 2006-11-22
MSA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In summary, the way the filter element connectors are currently secured to masks complicates the manufacture, assembly and maintenance of these masks

Method used

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  • Respirator facepieces
  • Respirator facepieces
  • Respirator facepieces

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0043] Figure 1A 1C and 9A to 9E illustrate an embodiment of a full face respirator facepiece 10 of the present invention in which a total of two filter elements (eg, canisters or cartridges) may be mounted on each side. Figures 2A to 2C illustrate another full face respirator facepiece 10' of the present invention in which a filter element may generally be mounted at its center.

[0044] back to Figure 1A Referring to the embodiment of 1C and FIGS. 9A to 9E , the respirator mask 10 includes a face blank 20 (eg, made of silicone rubber) that includes a rear opening 30 that seals around the user's face. Generally, the opening 30 includes a chin cover section 32 that seals around the user's jaw area, a side section 34 that seals against the sides of the user's face, and a forehead section 36 that seals against the user's forehead (see, eg, FIG. 9C ). Face blank 20 also includes front opening or edge 40 that seals lens 50 in respirator mask 10 . For example, the face blank 20 ...

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PUM

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Abstract

The present invention provides a respirator mask, which includes: a lens having an observation area for a user to observe the surrounding environment, the lens having an inner surface facing the user's face; and a nasal mask included in the respirator mask, It includes a forward section adjacent to the inner surface of the lens and a rearward section adjacent to the user's face, wherein the nasal mask includes at least one inhalation opening on its forward section that communicates with the interior of the respirator mask and does not have an intermediate check valve. , thereby allowing air to circulate across the viewing area of ​​the lens. This prevents fogging of the lens used for observation.

Description

[0001] References to related applications [0002] This application claims priority to US Provisional Application Serial No. 60 / 290,513, filed May 21, 2001, the disclosure of which is incorporated herein by reference. technical field [0003] The present invention relates generally to respirator masks, and more particularly to complete masks for use in toxic environments. Background technique [0004] A full-mask, air-purifying respirator consists of a facepiece and a headgear that secures the mask to the user. See, eg, US Patent No. 5,924,420. Masks that seal over the user's face typically include lenses through which the user can view the surrounding environment. The mask also includes one or more exhalation holes in fluid communication with one or more filter elements (e.g., chemical and particulate filter canisters or cartridges) through which inhaled air enters the mask and exhaled Air exits the mask through the exhalation holes. [0005] Nasal masks are typically p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A62B18/08A62B18/02A62B9/04A62B18/10
CPCA62B9/04A62B18/08A62B18/082
Inventor E·A·基弗尔M·卡瓦里雷R·P·沃尔夫P·A·泽勒K·施米德克
Owner MSA TECH