Pneumatic vehicle tire with specified belt bandage

Patent metadata

Field	Value
Publication number	US-12415385-B2
Application number	US-201917046153-A
Country	US
Kind code	B2
Filing date	Feb 4, 2019
Priority date	Apr 27, 2018
Publication date	Sep 16, 2025
Grant date	Sep 16, 2025

Abstract

A pneumatic vehicle tire for passenger cars comprises a carcass, a tread, and a belt which has belt plies and which is covered radially outwardly by a belt bandage having strengthening elements oriented approximately in the circumferential direction, the belt bandage comprising at least one belt bandage ply each consisting of a central section and two lateral sections each arranged next to the central section without overlapping the central section, the strengthening elements of the central section being x1 construction and the strengthening elements of each lateral section being identical cords of x2 or higher construction, the density of the strengthening elements in the central section being less than the density of the strengthening elements in the lateral sections, and the axial distance of each lateral section inner end from the closest end of the widest belt ply being 5-30 mm.

First claim

The invention claimed is:

1. A pneumatic vehicle tire for passenger cars comprising:
a carcass;
a tread;
a belt having belt plies and covered radially outwardly by a belt bandage having strengthening elements oriented at an angle of 0° to 5° with respect to a circumferential direction of the tire;
the belt bandage comprises a belt bandage ply consisting of a first lateral section, a central section and a second lateral section, the central section between the first lateral section and the second lateral section, the first and second lateral sections arranged next to the central section without overlapping the central section;
the density of the strengthening elements in the central section is less than the density of the strengthening elements in the first and second lateral sections;
the central strengthening elements are polyethylene terephthalate (PET) and have a x1 construction, and the lateral strengthening elements are identical cords and have a construction of x2 or higher;
the axial distance of each lateral section inner end from the closest end of the widest belt ply is 5 mm to 15 mm; and
the fineness of each lateral strengthening element is 0-10 percent greater than that of each central strengthening element.

2. The tire of claim 1 , wherein the lateral strengthening elements are polyamide 6.6 (PA6.6).

3. The tire of claim 2 , wherein the lateral strengthening elements have a x2 construction.

4. The tire of claim 1 , wherein the central strengthening elements each have a fineness of 940 dtex.

5. The tire of claim 1 , wherein the central strengthening elements each have a twist factor α in a range of from 10 to 100, and wherein α=twist [t/m]×(fineness [tex]/1000) 1/2 .

6. The tire of claim 1 , wherein:
the lateral strengthening elements are polyamide 6.6 (PA6.6); and
the belt bandage construction is 1-1-1.

Assignees

• Continental Reifen Deutschland Gmbh

Inventors

• Reese Wolfgang
• Kramer Thomas

Classifications

• B60C2009/2295

  with different cords in the same layer · CPC title

• B60C2009/2285

  Twist structures · CPC title

• B60C2009/2271

  with variable density · CPC title

• B60C2009/2257

  Diameters of the cords; Linear density thereof · CPC title

• B60C2009/2228

  characterised by special physical properties of the zero degree plies · CPC title