FR2415016A1 - Partially concave sidewall profiles for tubeless tyres - to enhance radial flexibility and hench ride comfort - Google Patents

Partially concave sidewall profiles for tubeless tyres - to enhance radial flexibility and hench ride comfort

Info

Publication number
FR2415016A1
FR2415016A1 FR7801848A FR7801848A FR2415016A1 FR 2415016 A1 FR2415016 A1 FR 2415016A1 FR 7801848 A FR7801848 A FR 7801848A FR 7801848 A FR7801848 A FR 7801848A FR 2415016 A1 FR2415016 A1 FR 2415016A1
Authority
FR
France
Prior art keywords
tyre
wheel
concavity
wall thickness
ride comfort
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7801848A
Other languages
French (fr)
Other versions
FR2415016B1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Compagnie Generale des Etablissements Michelin SCA
Original Assignee
Compagnie Generale des Etablissements Michelin SCA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Compagnie Generale des Etablissements Michelin SCA filed Critical Compagnie Generale des Etablissements Michelin SCA
Priority to FR7801848A priority Critical patent/FR2415016A1/en
Priority to DE19792901719 priority patent/DE2901719A1/en
Priority to SE7900464A priority patent/SE7900464L/en
Priority to LU80802A priority patent/LU80802A1/en
Priority to IT7967129A priority patent/IT7967129A0/en
Priority to BE192975A priority patent/BE873580A/en
Priority to BR7900367A priority patent/BR7900367A/en
Priority to NL7900434A priority patent/NL7900434A/en
Priority to GB7901969A priority patent/GB2016385A/en
Priority to JP469979A priority patent/JPS5519685A/en
Priority to ES476992A priority patent/ES476992A1/en
Publication of FR2415016A1 publication Critical patent/FR2415016A1/en
Application granted granted Critical
Publication of FR2415016B1 publication Critical patent/FR2415016B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C15/00—Tyre beads, e.g. ply turn-up or overlap
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C13/00—Tyre sidewalls; Protecting, decorating, marking, or the like, thereof

Abstract

A sidewall profile of a tyre carcass intended to fit on a wheel with conic, i.e. conversant rim seats, varies in thickness so that, in the fitted and inflated but unloaded condition, the outer surface of the sidewall is concave adjacent to the edge of the wheel. The maximum depth of the concavity is situated at a height above the wheel seal which is 15-20% of the radial depth between the wheel seat and the widest point of the tyre. The depth of the concavity is 1-10% of the chord length of the cavity. Used esp. for tubeless tyres used on rims designed to obtain a good seal, where the redn. in wall thickness due to the concavity compensates for the extra wall thickness provided at the edge of the tyre to ensure an adequate seat area. The redn. in wall thickness near the wheel rim cf. that of a tyre with a convex external surface profile enhances the radial flexibility of the tyre and improves ride comfort. Esp. claimed for use with tyres having steel cord reinforcement plies wrapped around the bead cord within a stiffener.
FR7801848A 1978-01-20 1978-01-20 Partially concave sidewall profiles for tubeless tyres - to enhance radial flexibility and hench ride comfort Granted FR2415016A1 (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
FR7801848A FR2415016A1 (en) 1978-01-20 1978-01-20 Partially concave sidewall profiles for tubeless tyres - to enhance radial flexibility and hench ride comfort
DE19792901719 DE2901719A1 (en) 1978-01-20 1979-01-17 VEHICLE AIR TIRES
LU80802A LU80802A1 (en) 1978-01-20 1979-01-18 RADIAL CASING PNEUMATIC
SE7900464A SE7900464L (en) 1978-01-20 1979-01-18 VEHICLE DECK WITH RADIAL FRAME
BE192975A BE873580A (en) 1978-01-20 1979-01-19 RADIAL CASING PNEUMATIC
BR7900367A BR7900367A (en) 1978-01-20 1979-01-19 PNEUMATIC WITH RADIAL HOUSING FOR VEHICLE WHEEL
IT7967129A IT7967129A0 (en) 1978-01-20 1979-01-19 RADIAL CASING TIRE
NL7900434A NL7900434A (en) 1978-01-20 1979-01-19 AIR TIRE WITH RADIAL CARCASE.
GB7901969A GB2016385A (en) 1978-01-20 1979-01-19 Radial carcass pneumatic tyre
JP469979A JPS5519685A (en) 1978-01-20 1979-01-19 Radial carcass tire
ES476992A ES476992A1 (en) 1978-01-20 1979-01-19 Radial carcass pneumatic tyre

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7801848A FR2415016A1 (en) 1978-01-20 1978-01-20 Partially concave sidewall profiles for tubeless tyres - to enhance radial flexibility and hench ride comfort

Publications (2)

Publication Number Publication Date
FR2415016A1 true FR2415016A1 (en) 1979-08-17
FR2415016B1 FR2415016B1 (en) 1980-09-05

Family

ID=9203752

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7801848A Granted FR2415016A1 (en) 1978-01-20 1978-01-20 Partially concave sidewall profiles for tubeless tyres - to enhance radial flexibility and hench ride comfort

Country Status (3)

Country Link
JP (1) JPS5519685A (en)
BE (1) BE873580A (en)
FR (1) FR2415016A1 (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2406530A1 (en) * 1977-10-19 1979-05-18 Uniroyal Gmbh Tyre rim without friction at bead area - in which rim profile is bent away radially from point above bead
FR2483854A1 (en) * 1980-06-09 1981-12-11 Bridgestone Tire Co Ltd RADIAL PNEUMATIC FOR ALL-TERRAIN VEHICLES
EP0117835A2 (en) * 1983-02-28 1984-09-05 The Goodyear Tire & Rubber Company High compression beads for tires
EP0128852A2 (en) * 1983-06-06 1984-12-19 The Goodyear Tire & Rubber Company A pneumatic tire
EP0129675A1 (en) * 1983-06-23 1985-01-02 MICHELIN & CIE (Compagnie Générale des Etablissements Michelin) Société dite: Radial ply tyre provided with reinforced beads which can be mounted on a rim with tronconic seats
EP0249135A2 (en) * 1986-06-09 1987-12-16 PIRELLI COORDINAMENTO PNEUMATICI Società per Azioni Motorcycle tyres
EP0481687A1 (en) * 1990-10-16 1992-04-22 Bridgestone Corporation Pneumatic tires
EP0486261A1 (en) * 1990-11-13 1992-05-20 Bridgestone Corporation Pneumatic tires
EP0640500A1 (en) * 1993-08-31 1995-03-01 The Goodyear Tire & Rubber Company An improved radial ply tire
US5464051A (en) * 1993-11-05 1995-11-07 The Goodyear Tire & Rubber Company Radial ply tire with specified bead portion design
US6443204B1 (en) 1998-01-12 2002-09-03 Compagnie Générale des Etablissements MICHELIN-MICHELIN & Cie Tire bead with circumferential reinforcement elements
FR3068301A1 (en) * 2017-07-03 2019-01-04 Compagnie Generale Des Etablissements Michelin PNEUMATIC WITH BOURRELET'S ZONE IS ALLEGEE
WO2019016467A1 (en) * 2017-07-18 2019-01-24 Compagnie Generale Des Etablissements Michelin Tyre with a reduced-weight bead region
WO2019077273A1 (en) * 2017-10-18 2019-04-25 Compagnie Generale Des Etablissements Michelin Tyre having a reduced-weight bead region
WO2019106248A1 (en) * 2017-12-01 2019-06-06 Compagnie Generale Des Etablissements Michelin Tyre having a reduced-weight bead region
WO2020245242A1 (en) * 2019-06-06 2020-12-10 Compagnie Generale Des Etablissements Michelin Tyre having optimized sidewalls and a crown reinforcement made up of two working crown layers and a layer of circumferential reinforcing elements
WO2020245241A1 (en) * 2019-06-06 2020-12-10 Compagnie Generale Des Etablissements Michelin Tyre having a crown reinforcement made up of two working crown layers and optimized sidewalls

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4660268A (en) * 1980-11-24 1987-04-28 Kennametal, Inc. Rolling mill roll assembly
JPS57151406A (en) * 1981-03-14 1982-09-18 Sumitomo Rubber Ind Ltd Tyre having improved bead
JPS57191104A (en) * 1981-05-17 1982-11-24 Toyo Tire & Rubber Co Ltd Radial tire for truck and bus
JPS6024209A (en) * 1983-07-21 1985-02-06 Mitsubishi Metal Corp Rolling roll
JPS6038603U (en) * 1983-08-22 1985-03-18 株式会社クボタ Forming roller for spiral steel pipe production
JPH03189214A (en) * 1989-12-18 1991-08-19 Toyo Tire & Rubber Co Ltd Pneumatic radial tire for heavy duty service
JPH0641181B2 (en) * 1990-02-27 1994-06-01 住友ゴム工業株式会社 Pneumatic tire
JPH05417A (en) * 1991-03-05 1993-01-08 Bridgestone Corp Manufacture of pneumatic radial type and bladder used therefor
US6269856B1 (en) * 1997-01-09 2001-08-07 Sumitomo Rubber Industries, Ltd. Pneumatic tire with specific side and bead dimensions
JP4512210B2 (en) * 1998-11-24 2010-07-28 株式会社ブリヂストン Pneumatic tire
JP5883208B2 (en) * 2009-10-14 2016-03-09 株式会社ブリヂストン Pneumatic tire
JP5545901B1 (en) * 2013-02-22 2014-07-09 株式会社ブリヂストン tire
JP6181432B2 (en) * 2013-06-05 2017-08-16 株式会社ブリヂストン tire
JP6077944B2 (en) * 2013-06-12 2017-02-08 株式会社ブリヂストン Pneumatic tire
JP2015042545A (en) * 2014-10-27 2015-03-05 株式会社ブリヂストン Pneumatic tire

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1517850A (en) * 1966-12-29 1968-03-22 Dunlop Sa Improvements to tires
FR1538478A (en) * 1967-07-24 1968-09-06 Uniroyal Englebert France Radial carcass tire casing with reinforced sidewalls
FR1586373A (en) * 1968-06-20 1970-02-20
FR2195535A1 (en) * 1972-08-11 1974-03-08 Uniroyal
FR2314059A1 (en) * 1975-06-12 1977-01-07 Michelin & Cie UNREINFORCED TIRE ENCLOSURES

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1517850A (en) * 1966-12-29 1968-03-22 Dunlop Sa Improvements to tires
FR1538478A (en) * 1967-07-24 1968-09-06 Uniroyal Englebert France Radial carcass tire casing with reinforced sidewalls
FR1586373A (en) * 1968-06-20 1970-02-20
FR2195535A1 (en) * 1972-08-11 1974-03-08 Uniroyal
FR2314059A1 (en) * 1975-06-12 1977-01-07 Michelin & Cie UNREINFORCED TIRE ENCLOSURES

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2406530A1 (en) * 1977-10-19 1979-05-18 Uniroyal Gmbh Tyre rim without friction at bead area - in which rim profile is bent away radially from point above bead
FR2483854A1 (en) * 1980-06-09 1981-12-11 Bridgestone Tire Co Ltd RADIAL PNEUMATIC FOR ALL-TERRAIN VEHICLES
EP0117835A2 (en) * 1983-02-28 1984-09-05 The Goodyear Tire & Rubber Company High compression beads for tires
EP0117835A3 (en) * 1983-02-28 1985-05-22 The Goodyear Tire & Rubber Company High compression beads for tires
EP0128852A2 (en) * 1983-06-06 1984-12-19 The Goodyear Tire & Rubber Company A pneumatic tire
EP0128852A3 (en) * 1983-06-06 1986-12-30 The Goodyear Tire & Rubber Company A pneumatic tire
EP0129675A1 (en) * 1983-06-23 1985-01-02 MICHELIN & CIE (Compagnie Générale des Etablissements Michelin) Société dite: Radial ply tyre provided with reinforced beads which can be mounted on a rim with tronconic seats
FR2548970A1 (en) * 1983-06-23 1985-01-18 Michelin & Cie RADIAL CARCASS TIRE, USEABLE WITHOUT AN INDEPENDENT AIR TUBE AND WITH BUCKLES REINFORCED BY AT LEAST ONE ROD, WHICH MAY BE MOUNTED ON A RIM WITH TRONCONIC SEAT
EP0249135A2 (en) * 1986-06-09 1987-12-16 PIRELLI COORDINAMENTO PNEUMATICI Società per Azioni Motorcycle tyres
EP0249135A3 (en) * 1986-06-09 1989-01-11 Pirelli Coordinamento Pneumatici Societa Per Azioni Motorcycle tyres
US4802520A (en) * 1986-06-09 1989-02-07 Pirelli Coordinamento Pneumatici S.P.A. Motorcycle tires
US5332016A (en) * 1990-10-16 1994-07-26 Bridgestone Corporation Pneumatic tires with sidewall recesses
EP0481687A1 (en) * 1990-10-16 1992-04-22 Bridgestone Corporation Pneumatic tires
EP0486261A1 (en) * 1990-11-13 1992-05-20 Bridgestone Corporation Pneumatic tires
US5205880A (en) * 1990-11-13 1993-04-27 Bridgestone Corporation Pneumatic tires with recesses in the bead region
EP0640500A1 (en) * 1993-08-31 1995-03-01 The Goodyear Tire & Rubber Company An improved radial ply tire
US5445202A (en) * 1993-08-31 1995-08-29 The Goodyear Tire & Rubber Company Radial ply tire with specified bead portion fitment to design rim
US5464051A (en) * 1993-11-05 1995-11-07 The Goodyear Tire & Rubber Company Radial ply tire with specified bead portion design
US6443204B1 (en) 1998-01-12 2002-09-03 Compagnie Générale des Etablissements MICHELIN-MICHELIN & Cie Tire bead with circumferential reinforcement elements
WO2019008247A1 (en) * 2017-07-03 2019-01-10 Compagnie Generale Des Etablissements Michelin Tyre with a reduced-weight bead region
FR3068301A1 (en) * 2017-07-03 2019-01-04 Compagnie Generale Des Etablissements Michelin PNEUMATIC WITH BOURRELET'S ZONE IS ALLEGEE
WO2019016467A1 (en) * 2017-07-18 2019-01-24 Compagnie Generale Des Etablissements Michelin Tyre with a reduced-weight bead region
FR3069191A1 (en) * 2017-07-18 2019-01-25 Compagnie Generale Des Etablissements Michelin PNEUMATIC WITH BOURRELET'S ZONE IS ALLEGEE
WO2019077273A1 (en) * 2017-10-18 2019-04-25 Compagnie Generale Des Etablissements Michelin Tyre having a reduced-weight bead region
WO2019106248A1 (en) * 2017-12-01 2019-06-06 Compagnie Generale Des Etablissements Michelin Tyre having a reduced-weight bead region
WO2020245242A1 (en) * 2019-06-06 2020-12-10 Compagnie Generale Des Etablissements Michelin Tyre having optimized sidewalls and a crown reinforcement made up of two working crown layers and a layer of circumferential reinforcing elements
WO2020245241A1 (en) * 2019-06-06 2020-12-10 Compagnie Generale Des Etablissements Michelin Tyre having a crown reinforcement made up of two working crown layers and optimized sidewalls
FR3096932A1 (en) * 2019-06-06 2020-12-11 Compagnie Generale Des Etablissements Michelin PNEUMATIC CONTAINING A TOP REINFORCEMENT CONSISTING OF TWO WORKING TOP LAYERS AND OPTIMIZED SIDES
FR3096931A1 (en) * 2019-06-06 2020-12-11 Compagnie Generale Des Etablissements Michelin PNEUMATIC FEATURING OPTIMIZED SIDES AND A TOP REINFORCEMENT CONSISTING OF TWO WORKING TOP LAYERS AND ONE LAYER OF CIRCUMFERENTIAL REINFORCEMENT ELEMENTS

Also Published As

Publication number Publication date
BE873580A (en) 1979-05-16
FR2415016B1 (en) 1980-09-05
JPS5519685A (en) 1980-02-12

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