EP0167273A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Manufacture of tyres
Assignee: Dunlop Ltd
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Filing: 1985-05-30
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Granted: —
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Expires: 2005-05-30
Abstract
Abstract Method of manufacture for a tyre having a toe (1) as described in U.K. Specification No 1 584 553 and intended for fitment to a TD rim, comprising forming a separate bead toe component (11) e.g. by extrusion, and applying the component (11) to a tyre carcass (5).
Inventors
- 👤 John Edwin Lewis Bramma
- 👤 Peter David Westwell
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 08:31
CPC Classifications
B; B29; B29D; B29D30/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
72 words
A method of manufacture for a tyre having a radially and axially inwardly directed toe (1) comprising assembling a tyre carcass comprising an inner liner, bead cores (8) and a carcass reinforcement (5) on a flat or low crown building machine and shaping the tyre carcass into a toroid, characterised by subsequently fitting to each bead region (2 and 3) adjacent to the carcass ply (5) a preformed bead toe component (11).
Claim 2
Independent Claim
72 words
A method of manufacture for a tyre having a radially and axially inwardly directed toe (1) comprising assembling a tyre carcass comprising an inner liner, bead cores (8) and a carcass reinforcement (5) on a flat or low crown building machine and shaping the tyre carcass into a toroid, characterised by subsequently fitting to each bead region (2 and 3) adjacent to the carcass ply (5) a preformed bead toe component (11).
Claim 3
Dependent Claim
32 words
A method of manufacture for a tyre according to Claim 1 characterised in that the bead toe component (11) is preformed immediately prior to fitting to the bead region (2 or 3).
Claim 4
Dependent Claim
56 words
A method of manufacture for a tyre according to Claim 1 characterised in that the bead toe component (11) is preformed by means of positioning a bead toe extruder die orifice adjacent to the tyre bead (2 or 3) and extruding the bead toe component (11) directly into the final required position on the carcass (5).
Claim 5
Dependent Claim
32 words
A method of manufacture for a tyre according to Claim 1 or 2 characterised in that the bead toe component (11) is preformed at a position remote from the tyre carcass (5).
Claim 6
Dependent Claim
40 words
A method of manufacture for a tyre according to - Claim 4 characterised in that the preformed bead toe component (11) is manufactured by extruding a length of rubber toe compound with substantially the finished cross-section of the toe (1).
Claim 7
Dependent Claim
44 words
A method of manufacture for a tyre according to Claim 4 characterised in that the preformed bead toe component (11) is manufactured by extruding to a cross-section (Figure 5) which is then folded longitudinally to produce the finished cross-section (Figure 4) of toe (1).
Claim 8
Dependent Claim
47 words
A method of manufacture for a tyre according to Claim 6 characterised in that a toe chafer strip of fabric (17) is applied to the extrudate so that when the cross-section (Figure 5) is folded the strip (17) is shaped to lie around the bead toe (1).
References Cited (Backward Citations)
No citation records indexed.
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