FR2356527A1 - Radial ply tyre carcass with polyamide and metallic cord reinforcement - for bead zone compressive stiffness with tread zone flexibility - Google Patents

Radial ply tyre carcass with polyamide and metallic cord reinforcement - for bead zone compressive stiffness with tread zone flexibility

Info

Publication number
FR2356527A1
FR2356527A1 FR7719939A FR7719939A FR2356527A1 FR 2356527 A1 FR2356527 A1 FR 2356527A1 FR 7719939 A FR7719939 A FR 7719939A FR 7719939 A FR7719939 A FR 7719939A FR 2356527 A1 FR2356527 A1 FR 2356527A1
Authority
FR
France
Prior art keywords
zone
polyamide
radial ply
bead
compressive stiffness
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.)
Withdrawn
Application number
FR7719939A
Other languages
French (fr)
Inventor
Luigi Maiocchi
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.)
Pirelli and C SpA
Original Assignee
Pirelli SpA
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 Pirelli SpA filed Critical Pirelli SpA
Publication of FR2356527A1 publication Critical patent/FR2356527A1/en
Withdrawn legal-status Critical Current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
    • B60C15/0009—Tyre beads, e.g. ply turn-up or overlap features of the carcass terminal portion
    • B60C15/0018—Tyre beads, e.g. ply turn-up or overlap features of the carcass terminal portion not folded around the bead core, e.g. floating or down ply
    • 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
    • B60C15/06—Flipper strips, fillers, or chafing strips and reinforcing layers for the construction of the bead
    • B60C15/0603—Flipper strips, fillers, or chafing strips and reinforcing layers for the construction of the bead characterised by features of the bead filler or apex
    • B60C15/0607—Flipper strips, fillers, or chafing strips and reinforcing layers for the construction of the bead characterised by features of the bead filler or apex comprising several parts, e.g. made of different rubbers
    • 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
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/02—Carcasses
    • B60C9/04—Carcasses the reinforcing cords of each carcass ply arranged in a substantially parallel relationship
    • B60C9/08—Carcasses the reinforcing cords of each carcass ply arranged in a substantially parallel relationship the cords extend transversely from bead to bead, i.e. radial ply
    • 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
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
    • B60C9/28—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers characterised by the belt or breaker dimensions or curvature relative to carcass

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)

Abstract

A composite tyre carcass structure has reinforcing plies of aromatic polyamide fibres laid over the crown of the carcass cross-section and down part of the sidewalls, complemented by plies made from metallic filaments rising part of the way up the sidewalls from the bead zones, so that the polyamide and metallic ply layers overlap by >=2.5 cm. Radial ply tyres, esp. for use under high compressive loadings, e.g. heavy goods or passenger vehicles. Arrangement combines high compressive stiffness near the bead zones with sufficient flexibility adjacent to the tread zone for good road-holding characteristics.
FR7719939A 1976-07-02 1977-06-29 Radial ply tyre carcass with polyamide and metallic cord reinforcement - for bead zone compressive stiffness with tread zone flexibility Withdrawn FR2356527A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2494776A IT1066964B (en) 1976-07-02 1976-07-02 IMPROVEMENT TO RADIAL TIRES

Publications (1)

Publication Number Publication Date
FR2356527A1 true FR2356527A1 (en) 1978-01-27

Family

ID=11215228

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7719939A Withdrawn FR2356527A1 (en) 1976-07-02 1977-06-29 Radial ply tyre carcass with polyamide and metallic cord reinforcement - for bead zone compressive stiffness with tread zone flexibility

Country Status (15)

Country Link
JP (1) JPS537007A (en)
AR (1) AR210707A1 (en)
AU (1) AU2656577A (en)
BE (1) BE856460A (en)
BR (1) BR7704121A (en)
DE (1) DE2729444A1 (en)
DK (1) DK297077A (en)
ES (1) ES229901Y (en)
FI (1) FI772046A (en)
FR (1) FR2356527A1 (en)
IT (1) IT1066964B (en)
LU (1) LU77680A1 (en)
NL (1) NL7706067A (en)
SE (1) SE7707617L (en)
ZA (1) ZA773897B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2387805A1 (en) * 1977-04-18 1978-11-17 Continental Gummi Werke Ag PNEUMATIC WRAP
EP0700797A3 (en) * 1994-09-12 1996-09-25 Sumitomo Rubber Ind Pneumatic radial tyre
CN102126401A (en) * 2010-01-20 2011-07-20 固特异轮胎和橡胶公司 Pneumatic tire with compound apex

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6814699B2 (en) * 2017-06-06 2021-01-20 株式会社ブリヂストン Pneumatic radial tire

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2387805A1 (en) * 1977-04-18 1978-11-17 Continental Gummi Werke Ag PNEUMATIC WRAP
EP0700797A3 (en) * 1994-09-12 1996-09-25 Sumitomo Rubber Ind Pneumatic radial tyre
US5759315A (en) * 1994-09-12 1998-06-02 Sumitomo Rubber Industries, Ltd. Pneumatic radial tire with inner carcass ply not wrapped around bead cores
EP0882607A2 (en) * 1994-09-12 1998-12-09 Sumitomo Rubber Industries Ltd. Pneumatic radial tyre
EP0882607A3 (en) * 1994-09-12 2000-04-05 Sumitomo Rubber Industries Ltd. Pneumatic radial tyre
CN102126401A (en) * 2010-01-20 2011-07-20 固特异轮胎和橡胶公司 Pneumatic tire with compound apex
EP2353887A3 (en) * 2010-01-20 2012-08-22 The Goodyear Tire & Rubber Company Pneumatic tire

Also Published As

Publication number Publication date
AR210707A1 (en) 1977-08-31
JPS537007A (en) 1978-01-23
IT1066964B (en) 1985-03-12
AU2656577A (en) 1979-01-04
SE7707617L (en) 1978-01-03
ZA773897B (en) 1978-05-30
ES229901Y (en) 1978-02-16
ES229901U (en) 1977-10-16
BR7704121A (en) 1978-03-28
NL7706067A (en) 1978-01-04
DK297077A (en) 1978-01-03
DE2729444A1 (en) 1978-01-05
FI772046A (en) 1978-01-03
LU77680A1 (en) 1977-10-04
BE856460A (en) 1977-10-31

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Legal Events

Date Code Title Description
ST Notification of lapse