Exhalation valve and respirator including same

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 12070634
APP PUB NO 20210283434A1
SERIAL NO

16332413

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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Various embodiments of an exhalation valve and a filtering face mask that includes such exhalation valve are disclosed. The exhalation valve can include a valve seat and a valve flap disposed over a seal surface and an orifice of the valve seat. The valve flap is adapted to be sealed against the seal surface of the valve seat when the exhalation valve is disposed in a closed configuration such that fluid is prevented from flowing through the valve seat. The orifice of the valve seat can include a substantially circular shape in a plane defined by a first major surface of the valve seat. Further, the seal surface can circumscribe the orifice and can include a substantially noncircular shape in the plane defined by the first major surface of the valve seat.

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Patent Owner(s)

Patent OwnerAddress
3M INNOVATIVE PROPERTIES COMPANYPO BOX 33427 ST PAUL MN 55133-3427

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Eitzman, Philip D Lake Elmo, US 23 429
Xue, Thomas J Woodbury, US 21 398

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