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Chemical and biological protective hood assembly

a technology of protective hoods and hoods, applied in protective garments, headwear caps, hats, etc., can solve the problems of restricting user movement and visibility, wearing completely decontaminated, and non-encapsulating designs that offer complete skin protection

Inactive Publication Date: 2005-09-08
WL GORE & ASSOC INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the Level A designs tend to restrict user movement and visibility and require the wearer to be completely decontaminated in order to replace their SCBA air storage tank in longer duration operations.
However, non-encapsulating designs offering complete skin protection, when worn in conjunction with an SCBA, do not provide sufficient liquid and vapor protection.
In searching for designs to improve the liquid and vapor protection when using an SCBA, doffing the garment without compromising the respiratory protection becomes a problem.
Thus, existing systems provide a number of user limitations and force the wearer to choose between functionally limiting designs and designs, which do not offer any substantial amount of vapor and liquid protection.

Method used

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  • Chemical and biological protective hood assembly
  • Chemical and biological protective hood assembly
  • Chemical and biological protective hood assembly

Examples

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example

[0053] A hood was constructed of three-layer chemical / biological protective fabrics, a chemical / biological protective seam tape, a latex rubber was used as neck sealing means, an optically clear polyvinyl chloride (PVC) film was used as the visor, a 0.045″×1″ open-cell foam rubber tape was used as the air line sealing means, a nylon cording and strapping with locking fasteners was used as the securing means for air line sealing means. The three-layer chemical / biological protective fabrics consisted of a fabric construction from W. L. Gore & Associates (part number ECAT 614001B). Chemical / biological protective seam tape from W. L. Gore & Associates (part number 6HSAJ025BLKBX) was used to seal sewn-together seams. Latex rubber was affixed at the head passthrough as the neck sealing means (part number 30003 / 1725AS102-4, Formco, Inc). The optically clear PVC visor had a nominal thickness of 0.080 inches was supplied by McMaster Carr (part number 87875K37).

[0054] Once the fabric, PVC fi...

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PUM

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Abstract

Chemical and biological protective hood assembly. The hood assembly comprises a head cover portion; a visor; a head passthrough; and an air line passthrough.

Description

RELATED APPLICATIONS [0001] This application claims the benefit of Provisional U.S. Patent Application 60 / 549,372, filed Mar. 2, 2004FIELD OF THE INVENTION [0002] This invention relates to chemical and biological protective hoods, suits and systems. BACKGROUND OF THE INVENTION [0003] Current standard practice for responders to chemical or biological releases is to wear a fully encapsulated suit when using a self contained breathing apparatus (“SCBA”) in a Hazardous Materials (“HAZMAT”) incident requiring vapor protection. In a fully encapsulated suit the responder and the SCBA are completely inside a chemical protective suit to prevent vapor ingress that could contaminate the responder's skin, lungs, etc. [0004] Non-encapsulating chemical and biological protective suits have been under development for several decades, such as those containing a chemical agent-adsorbing material, see for example, WO 83 / 02066. Many laminate and composite materials have been developed to allow for the ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A41D13/00A42B1/04
CPCA62B17/04
Inventor COURTNEY, MARK J.PHERIS, JOANNE G.
Owner WL GORE & ASSOC INC
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