GB2277061A - Tyre bead repair - Google Patents

Tyre bead repair Download PDF

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Publication number
GB2277061A
GB2277061A GB9307751A GB9307751A GB2277061A GB 2277061 A GB2277061 A GB 2277061A GB 9307751 A GB9307751 A GB 9307751A GB 9307751 A GB9307751 A GB 9307751A GB 2277061 A GB2277061 A GB 2277061A
Authority
GB
United Kingdom
Prior art keywords
tyre
bead
around
repair
pad
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.)
Withdrawn
Application number
GB9307751A
Other versions
GB9307751D0 (en
Inventor
Stuart R Lawrence
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.)
I M C
Original Assignee
I M C
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 I M C filed Critical I M C
Priority to GB9307751A priority Critical patent/GB2277061A/en
Publication of GB9307751D0 publication Critical patent/GB9307751D0/en
Publication of GB2277061A publication Critical patent/GB2277061A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
    • B29C73/04—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D using preformed elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
    • B29C73/24—Apparatus or accessories not otherwise provided for
    • B29C73/30—Apparatus or accessories not otherwise provided for for local pressing or local heating
    • B29C73/32—Apparatus or accessories not otherwise provided for for local pressing or local heating using an elastic element, e.g. inflatable bag
    • B29C73/325—Apparatus or accessories not otherwise provided for for local pressing or local heating using an elastic element, e.g. inflatable bag specially adapted for toroidal articles, e.g. tyres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2030/00—Pneumatic or solid tyres or parts thereof

Landscapes

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

Abstract

In curing a repair to a bead of a tubeless tyre a pressure pad 2 and a heat pad 3 are provided around the repaired bead and around the heat pad an inflated bag 4 is held in place by a rigid frame 5 of essentially U-shape. <IMAGE>

Description

TYRE BEAD REPAIR The present invention relates to a method and apparatus for curing a tyre repair.
It is known from UK Patent Specification GB 2,240,520A to provide a tyre repair system which uses a heat pad, an inflatable bag and straps around the tyre.
Tubeless tyres present a special problem. The bead of a tubeless tyre forms an air seal between the wheel rim and the tyre, and if this becomes damaged it is difficult to provide a satisfactory repair. The present invention aims to solve this problem.
Accordingly, the invention provides a method of curing a repair in a tyre in which a heat pad is held in place by an inflatable bag and constrained by an outer restraint, characterised in that the repair to a damaged bead is cured by provision of a pressure pad and a heat pad around the repaired bead, an inflated bag around the heat pad and a rigid frame around the bag.
Use of the rigid frame enables the heat and pressure to be maintained during the curing process.
Generally the rigid frame will be constructed of a steel or aluminium material welded together or cast into a specific shape. The shape should be such that it can surround the bead and associated area of the tyre and provide a space to accommodate the air bag wrapped round in U-shape and, on its inner side, the heat pad and pressure pad also in a U-shaped configuration around the tyre section, centering on the bead area to be repaired.
An embodiment of the invention will now be described by way of example with reference to the accompanying diagrammatic drawings: In which: Figure 1 shows a tyre section with an assembly around it for curing a bead repair; and Figure 2 is a side elevation of the assembly.
Referring to Figure 1, a tyre wall 1 having a bead area la to be repaired has a pressure pad 2 wrapped around it in a substantially U-shaped configuration, accommodating the specific shape of the tyre, and then a head pad 3. Surrounding the heat pad is an inflatable air bag 4. The air bag 4 is maintained in position by a fabricated rigid frame 5.
The frame 5 comprises a U-shaped member formed from bent over sheet steel welded to a pair of transverse support webs 7 strengthened by a cross bar 8.
In use, the repaired area is cleaned out and filled with an uncured rubber compound. The pressure pad 2 is then wrapped around the repair area, followed by the heat pad 3, and the not yet inflated air bag 4 and they are all located within the rigid frame struture 5. The air bag is then inflated and being a U-shape locks itself into the side wall of the tyre. Once locked it continues to expand and applies an all round pressure on the repaired bead area which is adjusted to approximately 45 pounds per square inch.
The heat pad is then plugged into a control panel and is arranged to supply controlled heat at approximately 1400C.

Claims (3)

1. A method of curing a repair in a tyre in which a heat pad is held in place by an inflatable bag and constrained by an outer restraint, in which the repair to a damaged bead of the tyre is cured by provision of a pressure pad and of a heat pad around the repaired bead, an inflated bag around the heat pad and a rigid frame around the bag.
2. A method according to claim 1 in which the rigid frame is of a U-shape such that it can surround the bead and associated area of the tyre and provide a space to accommodate the air bag when wrapped in a U-shape cross-section around the tyre bead and, on its inner side, the heat pad and pressure pad is also in a U-shaped configuration around the tyre section, and is centered on the bead area to be repaired.
3. A method of curing a tyre repair substantially as herein described with reference to the accompanying diagrammatic drawings.
GB9307751A 1993-04-15 1993-04-15 Tyre bead repair Withdrawn GB2277061A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9307751A GB2277061A (en) 1993-04-15 1993-04-15 Tyre bead repair

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9307751A GB2277061A (en) 1993-04-15 1993-04-15 Tyre bead repair

Publications (2)

Publication Number Publication Date
GB9307751D0 GB9307751D0 (en) 1993-06-02
GB2277061A true GB2277061A (en) 1994-10-19

Family

ID=10733847

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9307751A Withdrawn GB2277061A (en) 1993-04-15 1993-04-15 Tyre bead repair

Country Status (1)

Country Link
GB (1) GB2277061A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0995585A2 (en) * 1998-10-22 2000-04-26 Reifen Ihle GmbH Process and mould for recovering a vehicle tyre
ITMO20090099A1 (en) * 2009-04-24 2010-10-25 Gino Ferrari HEATING DEVICE, IN PARTICULAR TO HEAT TIRE HEELS

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB610733A (en) * 1946-02-12 1948-10-20 Dunlop Rubber Co Improvements relating to the repair of rubber tyres
GB1162038A (en) * 1966-10-21 1969-08-20 Michelin & Cie Improvements in apparatus for the Repair and Vulcanising of Pneumatic Tyres

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB610733A (en) * 1946-02-12 1948-10-20 Dunlop Rubber Co Improvements relating to the repair of rubber tyres
GB1162038A (en) * 1966-10-21 1969-08-20 Michelin & Cie Improvements in apparatus for the Repair and Vulcanising of Pneumatic Tyres

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0995585A2 (en) * 1998-10-22 2000-04-26 Reifen Ihle GmbH Process and mould for recovering a vehicle tyre
EP0995585A3 (en) * 1998-10-22 2000-11-22 Reifen Ihle GmbH Process and mould for recovering a vehicle tyre
ITMO20090099A1 (en) * 2009-04-24 2010-10-25 Gino Ferrari HEATING DEVICE, IN PARTICULAR TO HEAT TIRE HEELS
EP2243641A1 (en) 2009-04-24 2010-10-27 Gino Ferrari Heating device for tyre beads

Also Published As

Publication number Publication date
GB9307751D0 (en) 1993-06-02

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)