The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 09, 2018
Filed:
May. 18, 2011
Adrian Huggins, Worthing, GB;
Adrian Huggins, Worthing, GB;
QINETIQ LIMITED, , GB;
Abstract
A one-way valve for use in the inhalation and/or exhalation flowpath of respiratory protection equipment comprises a housingdefining a conduit and a circumferential array of three flexible flapseach extending inwards from the conduit wall and in the direction away from the inlet end I of the valve. Under a pressure differential in the opening direction of the valve each flap is adapted to flex outwards towards the conduit wall and under a reverse pressure differential the free edgeof each flap is adapted to press in sealing contact with respective portions of the free edges of the neighboring flaps.
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