GB1318755A - Treads pneumatic tyres and a method of tyre performance - Google Patents

Treads pneumatic tyres and a method of tyre performance

Info

Publication number
GB1318755A
GB1318755A GB4668770A GB4668770A GB1318755A GB 1318755 A GB1318755 A GB 1318755A GB 4668770 A GB4668770 A GB 4668770A GB 4668770 A GB4668770 A GB 4668770A GB 1318755 A GB1318755 A GB 1318755A
Authority
GB
United Kingdom
Prior art keywords
cap
parts
layers
base
tyres
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.)
Expired
Application number
GB4668770A
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.)
Goodyear Tire and Rubber Co
Original Assignee
Goodyear Tire and Rubber Co
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 Goodyear Tire and Rubber Co filed Critical Goodyear Tire and Rubber Co
Publication of GB1318755A publication Critical patent/GB1318755A/en
Expired 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
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/14—Anti-skid inserts, e.g. vulcanised into the tread band
    • B60C11/18—Anti-skid inserts, e.g. vulcanised into the tread band of strip form, e.g. metallic combs, rubber strips of different wear resistance
    • 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
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/52—Unvulcanised treads, e.g. on used tyres; Retreading
    • 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
    • B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
    • 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
    • B60C11/02—Replaceable treads
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L21/00—Compositions of unspecified rubbers
    • 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
    • B60C2200/00—Tyres specially adapted for particular applications
    • B60C2200/06—Tyres specially adapted for particular applications for heavy duty vehicles

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Tires In General (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

1318755 Tyre treads GOODYEAR TIRE & RUBBER CO 1 Oct 1970 [24 Oct 1969] 46687/70 Heading B7C A pneumatic tyre tread comprises two radially superposed vulcanized layers, i.e. a radially outermost positioned cap 11 and an underlying base 12, with either of the layers composed of 80 to 100 parts by weight of a copolymer of 1,3-butadiene and styrene and correspondingly 0-20 parts of another conventional elastomeric treadstock, and the other of the layers composed of 50 to 100 parts by weight of natural rubber or synthetic cis-1,4-polyisoprene having in excess of 80% of its polymerized units in a cis-1,4 configuration and correspondingly from 0 to 50 parts of another conventional elastomeric treadstock, with the radial depth of the cap being between 30 and 70% the depth of the cap and base which can be between 1À2 and 1/7 inches measured at the midcircumferential plane. The layers may be formed together from a common extruder head or be formed separately and adhered together. In another embodiment (Fig. 2, not shown) the cap 11 extends radially part way up the sidewalls 13 covering all of the base 12. In a method of use, the tyres are fitted to the front axle of a bus and when more than half the tread thickness of the cap has worn away the tyres are transferred to the rear axle, subsequent to regrooving if desired.
GB4668770A 1969-10-24 1970-10-01 Treads pneumatic tyres and a method of tyre performance Expired GB1318755A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US86912669A 1969-10-24 1969-10-24

Publications (1)

Publication Number Publication Date
GB1318755A true GB1318755A (en) 1973-05-31

Family

ID=25352962

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4668770A Expired GB1318755A (en) 1969-10-24 1970-10-01 Treads pneumatic tyres and a method of tyre performance

Country Status (10)

Country Link
JP (1) JPS515431B1 (en)
AR (1) AR193342A1 (en)
BE (1) BE757876A (en)
CA (1) CA955164A (en)
DE (1) DE2053146A1 (en)
FR (1) FR2066398A5 (en)
GB (1) GB1318755A (en)
NL (1) NL7015581A (en)
TR (1) TR16880A (en)
ZA (1) ZA706589B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1612034A1 (en) * 2004-06-28 2006-01-04 Sumitomo Rubber Industries, Ltd. Method for forming a green tread rubber and a pneumatic tire formed by using the greeen tread rubber

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2184469B2 (en) * 1972-05-18 1974-12-20 Uniroyal
JP2006007661A (en) * 2004-06-28 2006-01-12 Sumitomo Rubber Ind Ltd Method for forming green tread rubber and pneumatic tire using green tread rubber formed by the method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1612034A1 (en) * 2004-06-28 2006-01-04 Sumitomo Rubber Industries, Ltd. Method for forming a green tread rubber and a pneumatic tire formed by using the greeen tread rubber
US7549453B2 (en) 2004-06-28 2009-06-23 Sumitomo Rubber Industries, Ltd. Method for forming a green tread rubber and a pneumatic tire formed by using green tread rubber

Also Published As

Publication number Publication date
TR16880A (en) 1973-09-01
BE757876A (en) 1971-04-22
AR193342A1 (en) 1973-04-23
DE2053146A1 (en) 1971-05-06
FR2066398A5 (en) 1971-08-06
CA955164A (en) 1974-09-24
NL7015581A (en) 1971-04-27
ZA706589B (en) 1971-05-27
JPS515431B1 (en) 1976-02-19

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees