FR2442729A2 - 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
FR2442729A2
FR2442729A2 FR7834053A FR7834053A FR2442729A2 FR 2442729 A2 FR2442729 A2 FR 2442729A2 FR 7834053 A FR7834053 A FR 7834053A FR 7834053 A FR7834053 A FR 7834053A FR 2442729 A2 FR2442729 A2 FR 2442729A2
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
FR7834053A
Other languages
French (fr)
Other versions
FR2442729B2 (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 FR7834053A priority Critical patent/FR2442729A2/en
Priority to DE19792901719 priority patent/DE2901719A1/en
Priority to SE7900464A priority patent/SE7900464L/en
Priority to LU80802A priority patent/LU80802A1/en
Priority to ES476992A priority patent/ES476992A1/en
Priority to BR7900367A priority patent/BR7900367A/en
Priority to NL7900434A priority patent/NL7900434A/en
Priority to IT7967129A priority patent/IT7967129A0/en
Priority to GB7901969A priority patent/GB2016385A/en
Publication of FR2442729A2 publication Critical patent/FR2442729A2/en
Application granted granted Critical
Publication of FR2442729B2 publication Critical patent/FR2442729B2/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

Landscapes

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

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.
FR7834053A 1978-01-20 1978-11-30 Partially concave sidewall profiles for tubeless tyres - to enhance radial flexibility and hench ride comfort Granted FR2442729A2 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
FR7834053A FR2442729A2 (en) 1978-11-30 1978-11-30 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
ES476992A ES476992A1 (en) 1978-01-20 1979-01-19 Radial carcass pneumatic tyre
BR7900367A BR7900367A (en) 1978-01-20 1979-01-19 PNEUMATIC WITH RADIAL HOUSING FOR VEHICLE WHEEL
NL7900434A NL7900434A (en) 1978-01-20 1979-01-19 AIR TIRE WITH RADIAL CARCASE.
IT7967129A IT7967129A0 (en) 1978-01-20 1979-01-19 RADIAL CASING TIRE
GB7901969A GB2016385A (en) 1978-01-20 1979-01-19 Radial carcass pneumatic tyre

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7834053A FR2442729A2 (en) 1978-11-30 1978-11-30 Partially concave sidewall profiles for tubeless tyres - to enhance radial flexibility and hench ride comfort

Publications (2)

Publication Number Publication Date
FR2442729A2 true FR2442729A2 (en) 1980-06-27
FR2442729B2 FR2442729B2 (en) 1982-02-19

Family

ID=9215635

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7834053A Granted FR2442729A2 (en) 1978-01-20 1978-11-30 Partially concave sidewall profiles for tubeless tyres - to enhance radial flexibility and hench ride comfort

Country Status (1)

Country Link
FR (1) FR2442729A2 (en)

Citations (4)

* 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

Patent Citations (4)

* 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

Also Published As

Publication number Publication date
FR2442729B2 (en) 1982-02-19

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