GB1379253A - Retreading of pneumatic tyres - Google Patents

Retreading of pneumatic tyres

Info

Publication number
GB1379253A
GB1379253A GB3408071A GB3408071A GB1379253A GB 1379253 A GB1379253 A GB 1379253A GB 3408071 A GB3408071 A GB 3408071A GB 3408071 A GB3408071 A GB 3408071A GB 1379253 A GB1379253 A GB 1379253A
Authority
GB
United Kingdom
Prior art keywords
tyre
tread band
inflated
bags
preparing
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
GB3408071A
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.)
Kentredder Ltd
Original Assignee
Kentredder 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 Kentredder Ltd filed Critical Kentredder Ltd
Priority to GB3408071A priority Critical patent/GB1379253A/en
Publication of GB1379253A publication Critical patent/GB1379253A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B29D30/58—Applying bands of rubber treads, i.e. applying camel backs
    • 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
    • B29D30/54—Retreading
    • B29D30/56—Retreading with prevulcanised tread

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tyre Moulding (AREA)

Abstract

1379253 Retreading tyres KENTREDDER Ltd 20 Oct 1972 [20 July 1971] 34080/71 Heading B7C A worn tyre 2 is retreaded by (a) preparing, e.g. buffing or trueing, its ground engaging surface, (b) securing a prevulcanized tread band or strip 6 on the prepared surface by means of a bonding material layer 7, and (c) compressing the thus formed tyre tread region by inflating the annular air bags 3; of an apparatus which includes the bags and support rings 1, 8. The air bag 9 and its support ring 8 which comprises a plurality of segments hingedly interconnected so as to be collapsible may be placed inside the worn tyre prior to preparing the surface or after the tread band has been applied to the tyre. The other bag is, after application of the tread band placed around the tyre and the outer ring 1 which may be cylindrical (as shown) or frustoconical (Fig. 2, not shown) is placed in position. The bags are then inflated preferably through a common air line 10. When inflated to the required pressure, the bonding material is vulcanized by heat. The outer air bag 3 is axially wider than the tread band so that it applies pressure, when inflated, to the shoulder regions of the tyre.
GB3408071A 1971-07-20 1971-07-20 Retreading of pneumatic tyres Expired GB1379253A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3408071A GB1379253A (en) 1971-07-20 1971-07-20 Retreading of pneumatic tyres

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3408071A GB1379253A (en) 1971-07-20 1971-07-20 Retreading of pneumatic tyres

Publications (1)

Publication Number Publication Date
GB1379253A true GB1379253A (en) 1975-01-02

Family

ID=10361146

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3408071A Expired GB1379253A (en) 1971-07-20 1971-07-20 Retreading of pneumatic tyres

Country Status (1)

Country Link
GB (1) GB1379253A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2379372A1 (en) * 1977-02-07 1978-09-01 Kentredder Ltd METHOD AND DEVICE FOR FITTING A TREAD INTO A TIRE CASING

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2379372A1 (en) * 1977-02-07 1978-09-01 Kentredder Ltd METHOD AND DEVICE FOR FITTING A TREAD INTO A TIRE CASING

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee