US 3,975,490 AGranted

Method of molding a reinforced tire from two preformed sections

AssigneeLaitram, L.L.C.

InventorJames M. Lapeyre

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Abstract

Method of making a reinforced pneumatic tire in which the tire body is formed in at least two sections each including a side wall and a plurality of annular bands each including an annular reinforcing belt embedded in an elastomer. The tire sections are assembled in a mold with the annular bands of each section interleaved with the annular bands of another section and the elastomer is cured to form an integral tire body. The tire may be formed of two reinforced sections with the interleaved bands forming the annular tread section of the tires, or as three reinforced sections, including two sections each including a side wall and annular bands and a connecting section including annular bands with reinforcing belts which are interleaved with the annular bands of the other two sections to form a tread section. An annular, elastomeric tread section may be formed separately and bonded around and to the annular bands of the reinforced sections.

Claims14

Dependent claims

The method of manufacturing a pneumatic tire body having a general toroidal shape including side walls and an annular portion on which the tread can be formed, said method comprising the steps of:

assembling elastomer impregnated reinforcing elements to form at least two separate preformed sections of a tire body, two of said sections including a reinforced side wall and plural radially-spaced reinforced annular bands adapted to be interleaved with one or more corresponding annular bands of another sections of said tire body to form the annular portion of said tire body;
shaping and hardening the elastomer of said sections while keeping said elastomer in at least a partially curable condition;
assembling shaped and hardened said sections in a mold and interleaving said annular bands of one of said section with corresponding annular bands of another of said sections;
and
applying heat and pressure to the tire sections in said mold to cure said elastomer and bond the interleaved annular bands to one another to form an integral tire body having side walls joined by an annular portion including overlapped, interleaved bands and reinforcing elements.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 05/374,552Filed 28 Jun 1973 · division
Priority: 18 May 1971
Granted: 17 Aug 1976
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

B60C 19/00
Tyre parts or constructions not otherwise provided for
B29D 30/08
Pneumatic tyres or parts thereof: building tyres
B29D 2030/086
Building tyres: building the tyre carcass by combining two or more sub-assemblies, e.g. two half-carcasses
Y10S 264/59
Plastic and nonmetallic article shaping or treating: processes: processes in which a partial cure is involved