FR2261886A1 - Tyres incorporating a hoop of precompressed rubber - to increase tyre modulus and performance without hysteresis penalties - Google Patents

Tyres incorporating a hoop of precompressed rubber - to increase tyre modulus and performance without hysteresis penalties

Info

Publication number
FR2261886A1
FR2261886A1 FR7505762A FR7505762A FR2261886A1 FR 2261886 A1 FR2261886 A1 FR 2261886A1 FR 7505762 A FR7505762 A FR 7505762A FR 7505762 A FR7505762 A FR 7505762A FR 2261886 A1 FR2261886 A1 FR 2261886A1
Authority
FR
France
Prior art keywords
tyre
hoop
rubber
modulus
performance
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
FR7505762A
Other languages
French (fr)
Other versions
FR2261886B1 (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.)
Dunlop Ltd
Original Assignee
Dunlop Ltd
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 Dunlop Ltd filed Critical Dunlop Ltd
Publication of FR2261886A1 publication Critical patent/FR2261886A1/en
Application granted granted Critical
Publication of FR2261886B1 publication Critical patent/FR2261886B1/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
    • B60C7/00—Non-inflatable or solid tyres
    • B60C7/10—Non-inflatable or solid tyres characterised by means for increasing resiliency
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/02—Solid tyres ; Moulds therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/04—Resilient fillings for rubber tyres; Filling tyres therewith
    • 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
    • B60C5/00—Inflatable pneumatic tyres or inner tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Tyres incorporating an additional hoop of rubber on the underside of the tread zone and in a state of compression which establishes and sustains a state of tension in an inextensible reinforcing structure contained in the carcass between the compressed rubber and the outer tread. The hoop can be incorporated in both pneumatic and solid tyred wheels. The performance limit of a tyre is approximately determined by the value of TL2HS/MA, where T = radial thickness of the tyre, L = vertical loading on the tyre, H is a hysteresis loss factor, S is a function of rolling speed (viz rate of flex per unit time), M = modulus of the rubber, A = effective area of rolling contact. Unlike higher levels of cross-linking, precompression increases M without a corresponding increase in H, hence raising the performance limit for a tyre of given dimensions.
FR7505762A 1974-02-26 1975-02-25 Tyres incorporating a hoop of precompressed rubber - to increase tyre modulus and performance without hysteresis penalties Granted FR2261886A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB856674 1974-02-26

Publications (2)

Publication Number Publication Date
FR2261886A1 true FR2261886A1 (en) 1975-09-19
FR2261886B1 FR2261886B1 (en) 1977-04-15

Family

ID=9854944

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7505762A Granted FR2261886A1 (en) 1974-02-26 1975-02-25 Tyres incorporating a hoop of precompressed rubber - to increase tyre modulus and performance without hysteresis penalties

Country Status (12)

Country Link
JP (1) JPS50125402A (en)
BE (1) BE825778A (en)
DE (1) DE2508367A1 (en)
DK (1) DK71575A (en)
FI (1) FI59054C (en)
FR (1) FR2261886A1 (en)
IE (1) IE41532B1 (en)
IT (1) IT1041740B (en)
LU (1) LU71910A1 (en)
NL (1) NL7502158A (en)
SE (1) SE413079B (en)
ZA (1) ZA751036B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2401036A1 (en) * 1977-08-25 1979-03-23 Dunlop Ltd VEHICLE WHEEL ENCLOSURES
CN111491809A (en) * 2017-12-22 2020-08-04 米其林集团总公司 Pneumatic tire comprising an improved hoop ply

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114098692B (en) * 2021-10-28 2022-09-30 北京心世纪医疗科技有限公司 Left ventricle auxiliary device implantation method based on blood flow distribution optimization

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2401036A1 (en) * 1977-08-25 1979-03-23 Dunlop Ltd VEHICLE WHEEL ENCLOSURES
CN111491809A (en) * 2017-12-22 2020-08-04 米其林集团总公司 Pneumatic tire comprising an improved hoop ply

Also Published As

Publication number Publication date
FR2261886B1 (en) 1977-04-15
SE7502033L (en) 1975-08-27
DE2508367A1 (en) 1975-08-28
LU71910A1 (en) 1975-08-20
BE825778A (en) 1975-06-16
DK71575A (en) 1975-10-20
FI750498A (en) 1975-08-27
NL7502158A (en) 1975-08-28
FI59054C (en) 1981-06-10
SE413079B (en) 1980-04-14
FI59054B (en) 1981-02-27
AU7835675A (en) 1976-08-19
ZA751036B (en) 1976-01-28
IE41532B1 (en) 1980-01-30
JPS50125402A (en) 1975-10-02
IT1041740B (en) 1980-01-10

Similar Documents

Publication Publication Date Title
IT1015257B (en) RUBBER WHEEL WITH EXCELLENT HIGH SPEED PERFORMANCE
JPS5639904A (en) Radial tire for passenger car with low rolling resistance
IE40710B1 (en) Pneumatic tyres
IE37336L (en) Tyres, elastomeric sidewalls
ES279162U (en) Self-supporting pneumatic vehicle tyre
FR2425334A1 (en) Sub-tread reinforcement of run-flat pneumatic tyres - using rubber supported hoop plies for a high lateral tread stiffness wt. ratio
ES405991A1 (en) Pneumatic tires
IE37670B1 (en) Improvements in pneumatic tyres
IE37382B1 (en) Improvements in or relating to pneumatic tyre and wheel assemblies
FR2261886A1 (en) Tyres incorporating a hoop of precompressed rubber - to increase tyre modulus and performance without hysteresis penalties
GB907277A (en) Flat tire warning device
US4091856A (en) Tire having annular reinforcing structure and compressed rubber hoop
GB1424043A (en) Tyres for vehicle wheels
IE44220L (en) Tyre and wheel assembly
GB1117304A (en) Improvements in or relating to cured elastomeric articles
FR2261890A1 (en) Tyres with a compressed rubber lining on the sidewalls - to increase matrix modulus without higher hysteresis effects
EP0372677A3 (en) Improved pneumatic tire
IE39378L (en) Tyres, tread reinforcement
JPS5784202A (en) Pneumatic tire for high loading
GB1139308A (en) Improvements in radial cord carcass tires and methods of manufacturing radial cord carcass tires
IE38456B1 (en) Pneumatic tyre for vehicle wheels
GB932425A (en) Improvements in or relating to pneumatic tyres
GB879367A (en) Improvements in pneumatic tyres

Legal Events

Date Code Title Description
ST Notification of lapse