Pneumatic vehicle tire and method for making a pneumatic vehicle tire

Patent metadata

Field	Value
Publication number	US-10071604-B2
Application number	US-201514923138-A
Country	US
Kind code	B2
Filing date	Oct 26, 2015
Priority date	Apr 24, 2013
Publication date	Sep 11, 2018
Grant date	Sep 11, 2018

Abstract

A pneumatic vehicle tire has a carcass with at least one carcass ply. The surface of the carcass ply has an overlay made of an electrically conductive rubber mixture. The overlay extends continuously from an electrically conductive bead base to a superstructure and contacts the superstructure. A method for making a pneumatic vehicle tire includes the steps of making a carcass ply, covering a surface of the carcass ply with a continuous overlay made of an electrically conductive rubber mixture. The overlay contacts an electrically conductive bead base and the superstructure in the finished pneumatic vehicle tire.

First claim

What is claimed is:

1. A pneumatic vehicle tire comprising:
a superstructure;
a carcass;
a first tire bead having a first bead base;
a second tire bead having a second bead base;
said carcass extending from said first bead base via said superstructure to said second bead base;
said superstructure being configured to be electrically conductive;
at least one of said first and said second tire bead bases being configured as an electrically conductive bead base;
said carcass having at least one carcass ply and being configured to be electrically nonconductive;
said carcass ply defining a surface having an overlay of electrically conductive material;
said overlay being an electrically conductive rubber mixture;
said carcass ply extending from said one electrically conductive bead base to said superstructure;
said overlay contacting said superstructure and said one electrically conductive bead base;
said overlay extending continuously on said surface of said carcass ply from said one electrically conductive bead base to said superstructure;
said overlay making electrical contact to said one electrically conductive bead base and said superstructure so as to electrically conductively connect said one electrically conductive bead base to said superstructure;
said carcass ply ending in the region of said superstructure and defining an end point thereat;
said carcass ply contacting said superstructure at least at said end point;
said overlay extending axially on the inside on the carcass ply between said one electrically conductive bead base and said superstructure; and,
said overlay, in the region of said superstructure, extending at least to said end point and contacting said superstructure as well as said one electrically conductive bead base.

2. The pneumatic vehicle tire of claim 1 , wherein the pneumatic vehicle tire defines a circumference; and, said overlay extends over the entirety of said circumference or over at least a partial region of said circumference.

3. The pneumatic vehicle tire of claim 1 , wherein said carcass ply has a length; and, said overlay extends over the entirety of said length or a partial region of said length.

4. The pneumatic vehicle tire of claim 1 , wherein said overlay has a thickness lying in a range of 0.005 mm to 6.0 mm.

5. The pneumatic vehicle tire of claim 1 , wherein said overlay has a thickness lying in a range of 0.01 mm to 2.5 mm.

6. The pneumatic vehicle tire of claim 1 , wherein said overlay has a thickness lying in a range of 0.05 mm to 1.2 mm.

7. A method for making a pneumatic vehicle tire having an electrically conductive superstructure, two bead bases, and a carcass which extends from one bead base to the other bead base via the superstructure, the superstructure and at least one of the bead bases being configured to be electrically conductive, the carcass being configured electrically non-conductive, the method comprising the steps of:
a) making a carcass ply on a calender;
b) covering a surface of the carcass ply with a continuous overlay made of an electrically conductive rubber mixture in a manner so as to permit the overlay to contact the electrically conductive bead base and the electrically conductive superstructure in the finished pneumatic vehicle tire;
c) arranging the carcass ply with the overlay on a tire building drum;
d) finishing the carcass; and,
e) finishing the pneumatic vehicle tire.

8. The method of claim 7 , wherein said covering of the carcass ply with the continuous overlay is done directly on and/or after the calender.

9. The method of claim 7 , wherein the carcass ply has a width and in step b) the carcass ply is covered with the overlay over the entirety of the width or at least a portion of the width.

10. The method of claim 7 , wherein the carcass ply has a longitudinal extension and in step b) the carcass ply is covered with the overlay over the entirety of the longitudinal extension or at least over a partial region of the longitudinal extension.

Assignees

• Continental Reifen Deutschland Gmbh

Inventors

• Frerichs Udo

Classifications

• B60C15/0018

  not folded around the bead core, e.g. floating or down ply · CPC title

• B60C2015/0614

  characterised by features of the chafer or clinch portion, i.e. the part of the bead contacting the rim · CPC title

• B60C15/0045

  with ply turn-up up to the belt edges, i.e. folded around the bead core and extending to the belt edges · CPC title

• B60C2009/0215

  Partial carcass reinforcing plies, i.e. the plies neither crossing the equatorial plane nor folded around the bead core · CPC title

• B60C19/088

  using conductive beads · CPC title