FR2178113A2 - Tyre carcass - with sidewall surface patterns to inhibit slip when rolling collapsed - Google Patents

Tyre carcass - with sidewall surface patterns to inhibit slip when rolling collapsed

Info

Publication number
FR2178113A2
FR2178113A2 FR7311138A FR7311138A FR2178113A2 FR 2178113 A2 FR2178113 A2 FR 2178113A2 FR 7311138 A FR7311138 A FR 7311138A FR 7311138 A FR7311138 A FR 7311138A FR 2178113 A2 FR2178113 A2 FR 2178113A2
Authority
FR
France
Prior art keywords
tyre
collapsed
sidewall
grooves
pref
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
FR7311138A
Other languages
French (fr)
Other versions
FR2178113B2 (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.)
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
Priority claimed from IT22465/72A external-priority patent/IT1044837B/en
Priority claimed from IT22464/72A external-priority patent/IT1003055B/en
Application filed by Pirelli SpA filed Critical Pirelli SpA
Publication of FR2178113A2 publication Critical patent/FR2178113A2/en
Application granted granted Critical
Publication of FR2178113B2 publication Critical patent/FR2178113B2/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
    • B60C9/22—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel the plies being arranged with all cords disposed along the circumference of the tyre
    • 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
    • B60C15/00—Tyre beads, e.g. ply turn-up or overlap
    • B60C15/02—Seating or securing beads on rims
    • B60C15/024—Bead contour, e.g. lips, grooves, or ribs
    • B60C15/0247—Bead contour, e.g. lips, grooves, or ribs with reverse bead seat inclination, i.e. the axially inner diameter of the bead seat is bigger than the axially outer diameter 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
    • B60C17/00—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor
    • 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
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/18—Tyre cooling arrangements, e.g. heat shields
    • 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
    • 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

Landscapes

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

Abstract

In tyre carcasses featuring concave sidewalls loaded in compression and having relatively thin cross section hinge zones between each sidewall and the adjacent tread zone and beaded and offering a stable rolling configuration if collapsed, as in parent patent, such zone of the inner and outer surfaces of the sidewall as may contact other parts of the tyre or the wheel when the tyre is collapsed are covered with grooves normal to the principal anticipated axes of slip. Pref. the inner face of the sidewall features radial grooves opposite the surfaces of a pressure plate used to retain the tyre head in place on the wheel rim. Pref. the outer face of the sidewall is divided by intersecting pattern of radial and annular grooves. The grooves are pref. 0.3-20 mm deep and at intervals of 0.3-4 X their depth so that the ratio of groove vol. to residual rubber is 0.02-1. The groove patterns reduce the risk of circumferential or transverse slippage when rolling in the collapsed state, thus increasing vehicle stability and safety.
FR7311138A 1971-07-30 1973-03-28 Tyre carcass - with sidewall surface patterns to inhibit slip when rolling collapsed Granted FR2178113A2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT8367371 1971-07-30
IT22465/72A IT1044837B (en) 1972-03-28 1972-03-28 TIRE FOR VEHICLE WHEELS
IT22464/72A IT1003055B (en) 1972-03-28 1972-03-28 TIRE FOR VEHICLE WHEELS

Publications (2)

Publication Number Publication Date
FR2178113A2 true FR2178113A2 (en) 1973-11-09
FR2178113B2 FR2178113B2 (en) 1976-11-05

Family

ID=27273287

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7311138A Granted FR2178113A2 (en) 1971-07-30 1973-03-28 Tyre carcass - with sidewall surface patterns to inhibit slip when rolling collapsed

Country Status (1)

Country Link
FR (1) FR2178113A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2470697A1 (en) * 1979-12-03 1981-06-12 Goodyear Tire & Rubber TIRES WITH SIDEWALLS COMPRESSED

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NEANT *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2470697A1 (en) * 1979-12-03 1981-06-12 Goodyear Tire & Rubber TIRES WITH SIDEWALLS COMPRESSED

Also Published As

Publication number Publication date
FR2178113B2 (en) 1976-11-05

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