Patent · US Expired

Bead core for a pneumatic vehicle tire including hollow cords

US4825924A · kind A · utility

2Cited by

4References

9Claims

0Family size

Assignee

Continental AG · DE

Inventors

Udo Frerichs · Langenhagen, DE
Heinz-Dieter Rach · Garbsen, DE

Key dates

Filing date	Jan 29, 1987
Grant date	May 2, 1989
Priority date	—
Expiry date	Jan 29, 2007

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S152/20
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

A bead core for a pneumatic vehicle tire that is designed to have its beads disposed on the radially inner periphery of a rim. The bead core is in the form of an endless ring that has an essentially round cross-sectional shape. To increase the bead-seating reliability, it is proposed that the inner core of the bead core be hollow or be formed by a lightweight ring that serves as a spacer element. At least one layer of load-carrying cords is disposed about the inner core. These load-carrying cords have a solid cross-sectional area or a hollow cross-sectional shape.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.