FR2304487A1 - Run flat pneumatic tyre has externally concave side walls - so that support is also provided by tyre structure itself - Google Patents

Run flat pneumatic tyre has externally concave side walls - so that support is also provided by tyre structure itself

Info

Publication number
FR2304487A1
FR2304487A1 FR7601804A FR7601804A FR2304487A1 FR 2304487 A1 FR2304487 A1 FR 2304487A1 FR 7601804 A FR7601804 A FR 7601804A FR 7601804 A FR7601804 A FR 7601804A FR 2304487 A1 FR2304487 A1 FR 2304487A1
Authority
FR
France
Prior art keywords
tyre
side walls
structure itself
concave side
support
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
FR7601804A
Other languages
French (fr)
Other versions
FR2304487B1 (en
Inventor
Giorgio Tangorra
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 FR2304487A1 publication Critical patent/FR2304487A1/en
Application granted granted Critical
Publication of FR2304487B1 publication Critical patent/FR2304487B1/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
    • 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
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • 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
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/01—Shape of the shoulders between tread and sidewall, e.g. rounded, stepped or cantilevered
    • 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
    • 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
    • B60C3/00—Tyres characterised by the transverse section

Landscapes

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

Abstract

A pneumatic run-flat tyre has externally concave side walls which diverge outwardly from the bead at the inner edges of the side walls towards the tread portion. The outer surface of the tread portion is convex in the region in contact with the ground and when inflated the shoulders at the junction between the side walls and tread portion separate significantly. The tyres may be used for road vehicles or aircraft. The tyre is general purpose and suitable for road use and use in rough country. Much of the weight of a vehicle can be supported by the tyre structure itself so that the tyre can run flat.
FR7601804A 1975-03-18 1976-01-23 Run flat pneumatic tyre has externally concave side walls - so that support is also provided by tyre structure itself Granted FR2304487A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT21351/75A IT1034352B (en) 1975-03-18 1975-03-18 PNEUMATIC WITH COMBINED PNEUMATIC AND STRUCTURAL LOAD

Publications (2)

Publication Number Publication Date
FR2304487A1 true FR2304487A1 (en) 1976-10-15
FR2304487B1 FR2304487B1 (en) 1979-02-02

Family

ID=11180510

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7601804A Granted FR2304487A1 (en) 1975-03-18 1976-01-23 Run flat pneumatic tyre has externally concave side walls - so that support is also provided by tyre structure itself

Country Status (16)

Country Link
JP (1) JPS51118202A (en)
AR (1) AR211116A1 (en)
AU (1) AU1192776A (en)
BE (1) BE839496A (en)
BR (1) BR7601374A (en)
DE (1) DE2610806A1 (en)
DK (1) DK118476A (en)
ES (1) ES219803Y (en)
FI (1) FI753645A (en)
FR (1) FR2304487A1 (en)
IT (1) IT1034352B (en)
LU (1) LU74581A1 (en)
NL (1) NL7514215A (en)
PT (1) PT64804B (en)
SE (1) SE7603322L (en)
ZA (1) ZA761624B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2617096A1 (en) * 1987-06-24 1988-12-30 Bridgestone Corp Radial tyres for heavy loads with high internal pressure
EP0424155A2 (en) * 1989-10-19 1991-04-24 Sumitomo Rubber Industries Limited A pneumatic radial tyre
US5299612A (en) * 1989-10-19 1994-04-05 Sumitomo Rubber Industries, Inc. Pneumatic radial tire with high cornering and steering stability
US5309966A (en) * 1989-10-19 1994-05-10 Sumitomo Rubber Industries, Ltd. Pneumatic radial tire with high cornering and steering stability
US5323826A (en) * 1989-10-19 1994-06-28 Sumitomo Rubber Industries, Ltd. Pneumatic radial tire with high cornering and steering stability

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6341208A (en) * 1986-08-04 1988-02-22 Sumitomo Rubber Ind Ltd Safety tire

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2617096A1 (en) * 1987-06-24 1988-12-30 Bridgestone Corp Radial tyres for heavy loads with high internal pressure
EP0424155A2 (en) * 1989-10-19 1991-04-24 Sumitomo Rubber Industries Limited A pneumatic radial tyre
EP0424155A3 (en) * 1989-10-19 1991-07-10 Sumitomo Rubber Industries Limited A pneumatic radial tyre
US5222537A (en) * 1989-10-19 1993-06-29 Sumitomo Rubber Industries, Ltd. Stability pneumatic radial tire with high cornering and steering
US5277235A (en) * 1989-10-19 1994-01-11 Sumitomo Rubber Industries, Ltd. Pneumatic radial tire with high cornering and steering stability
US5299612A (en) * 1989-10-19 1994-04-05 Sumitomo Rubber Industries, Inc. Pneumatic radial tire with high cornering and steering stability
US5309966A (en) * 1989-10-19 1994-05-10 Sumitomo Rubber Industries, Ltd. Pneumatic radial tire with high cornering and steering stability
US5323826A (en) * 1989-10-19 1994-06-28 Sumitomo Rubber Industries, Ltd. Pneumatic radial tire with high cornering and steering stability
US5360044A (en) * 1989-10-19 1994-11-01 Sumitomo Rubber Industries, Ltd. Pneumatic radial tire with high cornering and steering stability

Also Published As

Publication number Publication date
JPS51118202A (en) 1976-10-18
BE839496A (en) 1976-07-01
IT1034352B (en) 1979-09-10
FR2304487B1 (en) 1979-02-02
NL7514215A (en) 1976-09-21
PT64804A (en) 1976-03-01
AU1192776A (en) 1977-09-15
ZA761624B (en) 1977-05-25
FI753645A (en) 1976-09-19
LU74581A1 (en) 1976-09-01
ES219803U (en) 1976-09-16
ES219803Y (en) 1977-03-01
SE7603322L (en) 1976-09-19
AR211116A1 (en) 1977-10-31
BR7601374A (en) 1976-09-14
PT64804B (en) 1977-07-07
DK118476A (en) 1976-09-19
DE2610806A1 (en) 1976-09-30

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Legal Events

Date Code Title Description
ST Notification of lapse