FR2338810A1 - Pneumatic tyre with greater reinforcement where side walls join tread - to reduce deformation in this region, giving redn. in overall stress - Google Patents

Pneumatic tyre with greater reinforcement where side walls join tread - to reduce deformation in this region, giving redn. in overall stress

Info

Publication number
FR2338810A1
FR2338810A1 FR7702123A FR7702123A FR2338810A1 FR 2338810 A1 FR2338810 A1 FR 2338810A1 FR 7702123 A FR7702123 A FR 7702123A FR 7702123 A FR7702123 A FR 7702123A FR 2338810 A1 FR2338810 A1 FR 2338810A1
Authority
FR
France
Prior art keywords
region
side walls
tyre
tread
redn
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
FR7702123A
Other languages
French (fr)
Other versions
FR2338810B1 (en
Inventor
Giorgio Tangorra
Giulio Cappa
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 FR2338810A1 publication Critical patent/FR2338810A1/en
Application granted granted Critical
Publication of FR2338810B1 publication Critical patent/FR2338810B1/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
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
    • B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
    • 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
    • B60C9/1821—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers comprising discrete fibres or filaments
    • 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
    • B60C9/26—Folded plies

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)
  • Vehicle Body Suspensions (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)

Abstract

A pneumatic tyre of generally trapezoidal cross-section has conventional reinforcing plies e.g. of steel cord. In the border region where the side walls join the tread portion the tyre has a different reinforcement so that this region has a greater resistance to deformation. The border region, pref. of reinforced elastomer, of which part forms the tread portion but is not normally in contact with ground is more resistant to rotational forces so that it does'nt deform in a circumferential direction as the tyre rotates. Stresses set up in the tyre are therefore reduced.
FR7702123A 1976-01-26 1977-01-26 Pneumatic tyre with greater reinforcement where side walls join tread - to reduce deformation in this region, giving redn. in overall stress Granted FR2338810A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT19565/76A IT1054821B (en) 1976-01-26 1976-01-26 TIRES FOR MOTOR VEHICLES WITH CROWN AND DIFFERENTIATED REINFORCEMENT

Publications (2)

Publication Number Publication Date
FR2338810A1 true FR2338810A1 (en) 1977-08-19
FR2338810B1 FR2338810B1 (en) 1978-10-20

Family

ID=11159113

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7702123A Granted FR2338810A1 (en) 1976-01-26 1977-01-26 Pneumatic tyre with greater reinforcement where side walls join tread - to reduce deformation in this region, giving redn. in overall stress

Country Status (16)

Country Link
JP (1) JPS5293007A (en)
AU (1) AU2115677A (en)
BE (1) BE850743A (en)
BR (1) BR7700151A (en)
DE (1) DE2703172A1 (en)
DK (1) DK33677A (en)
ES (1) ES226165Y (en)
FI (1) FI770097A (en)
FR (1) FR2338810A1 (en)
GR (1) GR62428B (en)
IT (1) IT1054821B (en)
LU (1) LU76637A1 (en)
NL (1) NL7613700A (en)
NO (1) NO764282L (en)
PT (1) PT66079B (en)
ZA (1) ZA767687B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2395158A1 (en) * 1977-06-24 1979-01-19 Pirelli TIRE PERFECTION FOR VEHICLE WHEELS

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59177503U (en) * 1983-05-16 1984-11-27 山地　儀三郎 air tires

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2395158A1 (en) * 1977-06-24 1979-01-19 Pirelli TIRE PERFECTION FOR VEHICLE WHEELS

Also Published As

Publication number Publication date
AU2115677A (en) 1978-07-13
NO764282L (en) 1977-07-27
LU76637A1 (en) 1977-06-24
BE850743A (en) 1977-05-16
FR2338810B1 (en) 1978-10-20
DK33677A (en) 1977-07-27
PT66079B (en) 1978-06-26
GR62428B (en) 1979-04-12
PT66079A (en) 1977-02-01
NL7613700A (en) 1977-07-28
ES226165U (en) 1977-04-01
IT1054821B (en) 1981-11-30
DE2703172A1 (en) 1977-07-28
FI770097A (en) 1977-07-27
JPS5293007A (en) 1977-08-05
ZA767687B (en) 1977-11-30
ES226165Y (en) 1977-08-01
BR7700151A (en) 1977-09-06

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Legal Events

Date Code Title Description
ST Notification of lapse