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1. (WO2018102460) IMPROVED TIRE TREADS HAVING POSITIVELY INCLINED SIPES
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Pub. No.: WO/2018/102460 International Application No.: PCT/US2017/063794
Publication Date: 07.06.2018 International Filing Date: 29.11.2017
IPC:
B60C 11/12 (2006.01) ,B60C 11/03 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
60
VEHICLES IN GENERAL
C
VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
11
Tyre tread bands; Tread patterns; Anti-skid inserts
03
Tread patterns
12
characterised by the use of narrow slits or incisions, e.g. sipes
B PERFORMING OPERATIONS; TRANSPORTING
60
VEHICLES IN GENERAL
C
VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
11
Tyre tread bands; Tread patterns; Anti-skid inserts
03
Tread patterns
Applicants:
LIMROTH, John [US/US]; US (US)
COLLETT, Mark [US/US]; US (US)
COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN [FR/FR]; 23 place des Carmes-Déchaux 63000 Clermont-Ferrand, FR (AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BE, BF, BG, BH, BJ, BN, BR, BW, BY, BZ, CA, CF, CG, CH, CI, CL, CM, CN, CO, CR, CU, CY, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, FR, GA, GB, GD, GE, GH, GM, GN, GQ, GR, GT, GW, HN, HR, HU, ID, IE, IL, IN, IR, IS, IT, JO, JP, KE, KG, KH, KM, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MC, MD, ME, MG, MK, ML, MN, MR, MT, MW, MX, MY, MZ, NA, NE, NG, NI, NL, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SI, SK, SL, SM, SN, ST, SV, SY, SZ, TD, TG, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, UZ, VC, VN, ZA, ZM, ZW)
Inventors:
LIMROTH, John; US
COLLETT, Mark; US
Agent:
HRIVNAK, Bret A.; US
BUTLER, Christopher R.; US
CUNNIFF, John J.; US
SMOLA, Daniel J.; US
SONNENBERG, Joel S.; US
Priority Data:
PCT/US2016/06424030.11.2016US
Title (EN) IMPROVED TIRE TREADS HAVING POSITIVELY INCLINED SIPES
(FR) BANDES DE ROULEMENT AMÉLIORÉES AYANT DES LAMELLES À INCLINAISON POSITIVE
Abstract:
(EN) In particular embodiments, a tire tread includes one or more lateral sipes (26s) arranged within the tread (20). As each such lateral sipe (26s) extends outward from within the tread thickness (T20) and towards the outer, ground-engaging side (22) of the tread (20), the lateral sipe (26s) is inclined towards the intended direction (R) of tire rotation. The lateral sipe (26s) also has a width (W26) (thickness) configured to, at an unworn stage, close along at least a portion of the sipe depth during operation of a loaded tire, and being configured to, at a worn stage, remain open during operation of the loaded tire. The lateral sipe (26s) has a width-to-height ratio associating the sipe width (W26) to the sipe height, the width-to-height ratio equaling 1:10 to 1:40. Providing a plurality of these lateral sipes (26s) may result in improved consistency of tread wear performance over the life of the tread (20).
(FR) Selon certains modes de réalisation particuliers, cette invention concerne une bande de roulement comprenant une ou plusieurs lamelle(s) latérale(s) (26s) disposée(s) à l'intérieur de la bande de roulement (20). À mesure que chaque lamelle latérale (26s) s'étend vers l'extérieur depuis l'intérieur de l'épaisseur de la bande de roulement (T20) et vers le côté externe en prise avec le sol (22) de la bande de roulement (20), la lamelle latérale (26s) s'incline dans la direction prévue (R) de rotation du pneu. La lamelle latérale (26s) a également une largeur (W26) (épaisseur) configurée pour, à un stade non usé, se fermer le long d'au moins une partie de la profondeur de lamelle pendant l'utilisation d'un pneu chargé, et configurée pour, à un stade usé, rester ouverte pendant l'utilisation du pneu chargé. La lamelle latérale (26s) a un rapport largeur/hauteur associant la largeur de lamelle (W26) à la hauteur de lamelle, le rapport largeur/hauteur allant de 1:10 à 1:40. La fourniture d'une pluralité de ces lamelles latérales (26s) peut mener à une régularité améliorée des performances d'usure de la bande de roulement sur la durée de vie de la bande de roulement (20).
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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, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, 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 (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (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: English (EN)
Filing Language: English (EN)