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Pub. No.:    WO/2016/097495    International Application No.:    PCT/FR2014/053348
Publication Date: 23.06.2016 International Filing Date: 15.12.2014
B60T 11/232 (2006.01), B60T 11/236 (2006.01), F16J 15/32 (2006.01)
Applicants: VALEO EMBRAYAGES [FR/FR]; 81 avenue Roger Dumoulin F-80009 Amiens cedex 2 (FR)
Inventors: MOLLIER, Christophe; (FR).
PRATO, Alessio; (IT).
ROSSI, Diego; (IT)
Agent: MONROCHE, Helene; (FR)
Priority Data:
Abstract: front page image
(EN)The invention relates, on the one hand, to a sealing device for a hydraulic cylinder (1) of the type comprising a pressure chamber (10) formed in its internal wall facing a piston (2) and into which a fluidic supply duct (11) opens, said device comprising on the one hand at least one annular seal (3) bearing a main lip (31) in contact, respectively, with the piston (2) and the wall of the chamber (10) and, on the other hand, a valve housed in said chamber and collaborating with the supply duct (11), characterized in that said annular seal (3) is furthermore secured to at least one elastically deformable auxiliary lip (32) that closes off the supply duct (11) that is able to open in the event of a relative depression in the chamber (10) and, on the other hand, to the use of this device in a motor vehicle clutch system. (Figure 2C)
(FR)L'invention concerne, d'une part, un dispositif d'étanchéité pour cylindre hydraulique (1) du type comprenant une chambre de pression (10) ménagée dans sa paroi interne en regard d'un piston (2) et dans laquelle débouche un conduit (11) d'alimentation en fluide, ledit dispositif comprenant, d'une part, au moins un joint annulaire (3) portant une lèvre principale (31) en contact, respectivement, avec le piston (2) et la paroi de la chambre (10) et, d'autre part, une valve logée dans ladite chambre et coopérant avec le conduit d'alimentation (11), caractérisé en ce que ledit joint annulaire (3) est, en outre, solidaire d'au moins une lèvre auxiliaire (32) élastiquement déformable, obturant le conduit d'alimentation (11) et susceptible de l'ouvrir en cas de dépression relative dans la chambre (10) et, d'autre part, l'utilisation de ce dispositif dans un système d'embrayage pour véhicule automobile. (Fig.2C)
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG).
Publication Language: French (FR)
Filing Language: French (FR)