FR2293304A1 - Pneumatic tyre has bead with reinforcing ring - to the periphery of which a rubber annulus is fixed before attaching to tyre carcass - Google Patents

Pneumatic tyre has bead with reinforcing ring - to the periphery of which a rubber annulus is fixed before attaching to tyre carcass

Info

Publication number
FR2293304A1
FR2293304A1 FR7439502A FR7439502A FR2293304A1 FR 2293304 A1 FR2293304 A1 FR 2293304A1 FR 7439502 A FR7439502 A FR 7439502A FR 7439502 A FR7439502 A FR 7439502A FR 2293304 A1 FR2293304 A1 FR 2293304A1
Authority
FR
France
Prior art keywords
annulus
ring
periphery
tyre
bead
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
FR7439502A
Other languages
French (fr)
Other versions
FR2293304B1 (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.)
Bridgestone Corp
Original Assignee
Bridgestone Corp
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 Bridgestone Corp filed Critical Bridgestone Corp
Priority to FR7439502A priority Critical patent/FR2293304A1/en
Publication of FR2293304A1 publication Critical patent/FR2293304A1/en
Application granted granted Critical
Publication of FR2293304B1 publication Critical patent/FR2293304B1/fr
Granted 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)
    • B29D30/48—Bead-rings or bead-cores; Treatment thereof prior to building the tyre
    • B29D30/50—Covering, e.g. by winding, the separate bead-rings or bead-cores with textile material, e.g. with flipper strips
    • 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)
    • B29D30/48—Bead-rings or bead-cores; Treatment thereof prior to building the tyre
    • B29D2030/482—Applying fillers or apexes to bead cores

Landscapes

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

Abstract

A metal ring for reinforcing the bead of a pneumatic tyre is mounted on a circular support whose diameter is variable and an elastic annulus is supported in a generally cylindrical shape on a transfer element which can be moved to position the annulus against an annular support so that the annulus takes up a truly annular shape around the periphery of the ring. The face of annular support against which the annulus rests is inclined and the annulus is moved off this face so that it resiliently locates (and becomes fixed) around the periphery of the ring. When the ring is attached to the tyre carcass reinforcing plies are folded around the ring and the annulus separates the folded over ends of the plies form the main region of the plies. Previous manual operations are automated thereby increasing production speeds.
FR7439502A 1974-12-03 1974-12-03 Pneumatic tyre has bead with reinforcing ring - to the periphery of which a rubber annulus is fixed before attaching to tyre carcass Granted FR2293304A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7439502A FR2293304A1 (en) 1974-12-03 1974-12-03 Pneumatic tyre has bead with reinforcing ring - to the periphery of which a rubber annulus is fixed before attaching to tyre carcass

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7439502A FR2293304A1 (en) 1974-12-03 1974-12-03 Pneumatic tyre has bead with reinforcing ring - to the periphery of which a rubber annulus is fixed before attaching to tyre carcass

Publications (2)

Publication Number Publication Date
FR2293304A1 true FR2293304A1 (en) 1976-07-02
FR2293304B1 FR2293304B1 (en) 1979-06-08

Family

ID=9145486

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7439502A Granted FR2293304A1 (en) 1974-12-03 1974-12-03 Pneumatic tyre has bead with reinforcing ring - to the periphery of which a rubber annulus is fixed before attaching to tyre carcass

Country Status (1)

Country Link
FR (1) FR2293304A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2387116A1 (en) * 1977-04-13 1978-11-10 Pirelli PROCESS FOR LAYING A DEFORMABLE ELEMENT OF MATERIAL ON A TIRE BALL LINKAGE AND MACHINE FOR IMPLEMENTING THIS PROCESS
FR2411696A1 (en) * 1977-12-15 1979-07-13 Pirelli Assembling filler pieces to tyre bead cores - in machine with alignment and butt splicing devices

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2387116A1 (en) * 1977-04-13 1978-11-10 Pirelli PROCESS FOR LAYING A DEFORMABLE ELEMENT OF MATERIAL ON A TIRE BALL LINKAGE AND MACHINE FOR IMPLEMENTING THIS PROCESS
FR2411696A1 (en) * 1977-12-15 1979-07-13 Pirelli Assembling filler pieces to tyre bead cores - in machine with alignment and butt splicing devices

Also Published As

Publication number Publication date
FR2293304B1 (en) 1979-06-08

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Legal Events

Date Code Title Description
ST Notification of lapse