Detachable inhalation valve device for a respirator filter assembly

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5411057
SERIAL NO

07796708

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A respirator filter assembly for use in a respirator apparatus wherein the assembly includes a respirator filter cartridge having a housing which contains filter material and has an inlet portion and an outlet portion, and a valve device that is selectively securable to an opening of the inlet portion, the outlet portion of the housing being preferably securable to respirator structure such as a face mask. The valve device preferably comprises a valve support member and a one-way valve element. The support member is provided with means for detachably securing the valve device over the inlet portion whereby the valve element is situated to regulate the inlet opening. The support member also desirably has a means for connecting the support member to the respirator apparatus, preferably the filter cartridge, such that the valve device may reside in a position so as not to obstruct the filter cartridge inlet opening when the valve device is not attached to the inlet portion.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
MINE SAFETY APPLIANCES COMPANYLEGAL DEPARTMENT 121 GAMMA DRIVE PITTSBURGH PA 15238

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Pouchot, Thomas D Gibsonia, PA 3 56

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