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1. (WO2007010393) OIL-CONTROL RING FOR AN INTERNAL COMBUSTION ENGINE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2007/010393 International Application No.: PCT/IB2006/002165
Publication Date: 25.01.2007 International Filing Date: 14.07.2006
IPC:
F16J 9/06 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
J
PISTONS; CYLINDERS; PRESSURE VESSELS IN GENERAL; SEALINGS
9
Piston-rings, seats therefor; Ring sealings of similar construction in general
06
using separate springs expanding the rings; Springs therefor
Applicants:
MAHLE INTERNATIONAL GMBH [DE/DE]; Pragstrasse 26-46 70376 Stuttgart, DE (AllExceptUS)
MAHLE METAL LEVE S.A. [BR/BR]; Rua Brasílio Luz, 535 CEP-04746-901 Sao Paulo, SP, BR (AllExceptUS)
FERRARESE, André [BR/BR]; BR (UsOnly)
UEHARA, Samantha [BR/BR]; BR (UsOnly)
Inventors:
FERRARESE, André; BR
UEHARA, Samantha; BR
Agent:
POHLE, Reinhard; Mahle International GmbH Patentabteilung ZRIP Pragstrasse 26 - 46 70376 Stuttgart, DE
Priority Data:
PI0502980-520.07.2005BR
Title (EN) OIL-CONTROL RING FOR AN INTERNAL COMBUSTION ENGINE
(FR) SEGMENT RACLEUR POUR MOTEUR A COMBUSTION INTERNE
Abstract:
(EN) An oil-control ring for an internal combustion engine, to be mounted between the sidewalls of a respective groove (10) of a piston (P) and comprising two ring segments (20) and an annular expander (30) disposed between the two ring segments (20) and presenting a support body (31) defining a seating plane for each ring segment (20) , said ring further comprising: at least one expander portion (40) axially projecting from the support body (31) of the expander (30) , beyond at least one of the seating planes of a ring segment (20); and at least one superficial irregularity (50) provided in at least one of the ring segments (20) and which is dimensioned to be contained in the thickness of the respective ring segment (20) and to interfere with at least one expander portion (40), in order to rotatively lock said ring segment (20) in relation to the expander (30) .
(FR) L'invention porte sur un segment racleur d'un moteur à combustion interne destiné à être monté entre les parois latérales d'une rainure (10) du piston (P) et comprenant deux segments annulaires (20) et un ressort d'expansion annulaire (30) placé entre les deux segments annulaires (20) et présentant un corps de support (31) formant un plan d'appui pour chaque segment annulaire (20). Le segment racleur comprend également: au moins une section (40) du ressort d'expansion faisant saillie axialement du corps de support (31) dudit ressort d'expansion (30) et dépassant au moins un des plans d'appui d'un segment annulaire (20); et au moins une irrégularité superficielle (50) formée dans au moins un des segments annulaires (20), ses dimensions lui permettant d'être intégrée à l'épaisseur du segment annulaire correspondant (20) et d'interférer avec au moins une section (40) du ressort d'expansion afin de bloquer par rotation le segment annulaire (20) par rapport au ressort d'expansion (30).
front page image
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, 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, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, 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 Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (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)
Also published as:
KR1020080049713EP1904767JP2009501872US20090250880CN101253352