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Belt package for super single truck tires

a belt package and truck tire technology, applied in the field of truck tires, can solve the problems of increased performance, heretofore, and proved problems

Inactive Publication Date: 2008-12-04
THE GOODYEAR TIRE & RUBBER CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention is a type of tire for pneumatic medium trucks that has a unique design. It includes parallel annular beads, a carcass ply, three to six belt plies, a tread, and sidewalls. One feature is that there are at least two embedded full layers of the radially inner belt plies. These layers are achieved by helically winding a spiral overlay. Another feature is that the spiral layers start at the center and spiral to one shoulder, then back across the tread to the other shoulder, and then back to the center for two substantially full layers. The patent text also describes specific constructions of these tires.

Problems solved by technology

Achievement of an improved low-weight tire construction providing such enhanced performance has, heretofore, proven problematic.

Method used

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  • Belt package for super single truck tires
  • Belt package for super single truck tires

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Embodiment Construction

[0028]With reference to FIG. 1, a preferred embodiment of the invention is illustrated. The pneumatic tire 10 comprises a pair of substantially parallel annular bead cores 15 located in beads 17 and a carcass ply 16. The carcass ply is wrapped over bead cores 15 and over a crown region of the tire at substantially 90 degrees with respect to the equatorial plane (EP) of the tire. Each bead comprises an apex, reinforcing plies such as chippers and flippers and gum strips as is well known in the tire art. A tread 28 comprising grooves 29 is disposed over a crown reinforcing or belt structure 27 and sidewalls 26 are arranged between the tread 28 and the beads 17. The carcass ply and belt plies, as is common in the art, are reinforced with substantially parallel longitudinal reinforcing members.

[0029]The crown reinforcing structure 27 pursuant to the invention is a low weight construction RLL with at least tow embedded layers of full spiral overlay. The structure 27 comprises three splic...

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PUM

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Abstract

A medium truck tire (10) and more specifically a super single truck tire (10) includes belt plies (22, 23, 25) reinforced with steel cords which make an angle comprised between 0° and 5° with respect to the equatorial plane. Disposed between in embedded fashion between two of the belt plies (23, 25) is a pair of substantially full spiral helically wound overlays (24). The steel of the reinforcing cords comprises high elongation steel. The spliced belt plies (22, 23, 25) are in a RLL configuration making angles comprised between 45° and 75° with respect to the equatorial plane angular direction of the inwardmost ply (25) oppositely disposed relative to the outer plies (22, 23). The helically would layers (24) are disposed between the inwardmost R ply (25) and a radially outward L ply (23).

Description

FIELD AND BACKGROUND OF THE INVENTION[0001]The present invention relates to truck tires, preferably super single radial truck pneumatic drive tires.[0002]Super single tires, which are wide base low aspect ratio truck tires replacing two small base tires, so-called dual mounted tires, have been used for years on trailers.[0003]Over the years these wide base tires appeared more and more on trucks in the steering position because they had a higher mileage.[0004]U.S. Pat. No. 6,619,357 discloses a belt package for a super single truck tire having steel cords and belt plies angled with respect to the equatorial plane and a helically wound belt ply on a carcass ply.[0005]GB-A-1 567 614 discloses a pneumatic tire particularly suitable for heavy vehicles. Radially outwards of the belt layers there is at least one layer comprising metallic cords parallel to one another and substantially parallel to the circumferential direction. The metallic cords have an ultimate elongation between 4 and 8%...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B60C9/18
CPCB60C9/2009Y10T152/10783Y10T152/10765B60C9/2204
Inventor KOTANIDES, JR., JOHN
Owner THE GOODYEAR TIRE & RUBBER CO