Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1979-07-30
1981-03-24
Kittle, John E.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
152330R, 152354R, 152361R, 156128P, 156128N, 264257, 264259, 264262, 264275, 264326, B29H 1700, B29H 1728
Patent
active
042578361
ABSTRACT:
This disclosure relates to a method of manufacturing a pneumatic tire having a cast body of viscoelastic material, a road-engaging tread surface and a girdle member of reinforcing cords located in the crown area of the cast body. The method comprises the steps of assembling an annular hoop assembly with the girdle member (having a predetermined radius of curvature, its reinforcing cords at the exact cord centerline diameter desired in the finished tire, and a predetermined tension on the cords) located on the inner periphery of the hoop assembly and a spacing support member located on the outer periphery of the hoop assembly; inverting or turning the hoop assembly inside out thereby locating the girdle member on the outer periphery (without changing its cord diameter, its radius of curvature and its cord tension) and the spacing support member on the inner periphery; mounting the inverted hoop assembly on the annular core of a tire mold so that the girdle member has its reinforcing cords at the exact cord centerline diameter desired; closing the tire mold; filling it with a viscoelastic material and curing the material. The method of this invention may be used to manufacture a tire with a tread of viscoelastic material or of conventional, carbon black reinforced, rubber. In the method of this invention wherein a conventional rubber tread is used, an additional step is necessary wherein the precured conventional tread is placed in the tread section of the mold prior to the injection of the viscoelastic material.
REFERENCES:
patent: 3381736 (1968-05-01), Ford et al.
patent: 3701374 (1972-10-01), McGillvary
patent: 3837986 (1974-09-01), Gorter et al.
patent: 4049767 (1977-09-01), Vaidya
patent: 4055619 (1977-10-01), Goodfellow
patent: 4057446 (1977-11-01), Goodfellow
Kittle John E.
The Firestone Tire & Rubber & Company
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