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1. (WO2007075679) FILTERING FACE MASK WITH A UNIDIRECTIONAL VALVE HAVING A STIFF UNBIASED FLEXIBLE FLAP
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2007/075679 International Application No.: PCT/US2006/048424
Publication Date: 05.07.2007 International Filing Date: 19.12.2006
IPC:
A62B 7/10 (2006.01) ,A62B 9/02 (2006.01)
A HUMAN NECESSITIES
62
LIFE-SAVING; FIRE-FIGHTING
B
DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
7
Respiratory apparatus
10
with filter elements
A HUMAN NECESSITIES
62
LIFE-SAVING; FIRE-FIGHTING
B
DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
9
Component parts for respiratory or breathing apparatus
02
Valves
Applicants: 3M INNOVATIVE PROPERTIES COMPANY[US/US]; 3M Center Post Office Box 33427 Saint Paul, Minnesota 55133-3427, US
Inventors: MARTIN, Philip G.; US
Agent: HANSON, Karl G., ; 3M Center Office of Intellectual Property Counsel Post Office Box 33427 Saint Paul, Minnesota 55133-3427, US
Priority Data:
11/275,29922.12.2005US
Title (EN) FILTERING FACE MASK WITH A UNIDIRECTIONAL VALVE HAVING A STIFF UNBIASED FLEXIBLE FLAP
(FR) MASQUE FACIAL FILTRANT À VALVE UNIDIRECTIONNELLE AVEC CLAPET FLEXIBLE NON CONTRAINT RIGIDE
Abstract:
(EN) A filtering face mask that includes a mask body that is adapted to fit at least over the nose and mouth of a wearer to create an interior gas space when worn; and an exhalation valve that is in fluid communication with the interior gas space. The exhalation valve includes a valve seat with a seal surface and an orifice through which exhaled air may pass to leave the interior gas space; and a flexible flap that is mounted to the valve seat such that the flap makes contact with the seal surface when the valve is in its closed position and such that the flap can flex away from the seal surface during an exhalation to allow exhaled air to pass through the orifice. The flap is unbiased when in its closed position and exhibits a cantilever bend ratio of 0.0050 or less.
(FR) La présente invention concerne un masque facial filtrant comportant un corps de masque conçu pour couvrir au moins le nez et la bouche afin de créer un espace gazeux intérieur lorsqu’un utilisateur le porte ; et une valve d’expiration mise en communication fluidique avec l’espace gazeux intérieur. La valve d’expiration comprend, d’une part, un siège de valve avec une surface hermétique et un orifice par lequel l’air expiré peut passer pour sortir de l’espace gazeux intérieur et, d’autre part, un clapet flexible qui est monté sur le siège de valve de sorte que le clapet entre en contact avec la surface hermétique quand la valve est en position fermée, et de sorte que le clapet puisse fléchir et s’écarter de la surface hermétique pendant une expiration pour permettre à l’air expiré de traverser l’orifice. Le clapet n’est pas contraint quand il est en position fermée et il présente un rapport de flexion en porte-à-faux inférieur ou égal à 0,0050.
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Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)