Expiratory valve unit

Number of patents in Portfolio can not be more than 2000

United States of America Patent

APP PUB NO 20070137647A1
SERIAL NO

10556958

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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An expiratory valve unit comprises a body having a plurality of outlets and valve seats, and a rotary closure member having a plurality of blades each normally biassed against a respective seat to close the outlets and being rotatable relative to said body when under pressure from user exhalate impinging the blades to open the outlets.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
HELMET INTEGRATED SYSTEMS LIMITEDFOURTH AVENUE UNIT 3 FOCUS 4 LETCHWORTH HERTFORDSHIRE SG6 2TU

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dampney, Ian London, GB 5 49

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