Emergency running ring for pneumatic vehicle tires

US4371024A · kind A · utility

Assignee

• Vorwerk & Sohn GmbH & Co. KG · DE

Inventors

• Hermann Stein · Taunusstein, DE
• Ulrich Piepenbrink · Schwelm, DE

Key dates

• Filing date: Feb 10, 1981
• Grant date: Feb 1, 1983
• Expiry date: Feb 10, 2001

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T152/10738
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

The invention relates to an emergency running ring for pneumatic tires mounted on vehicle rims. A lubricant is contained in cavities formed by virtue of the shape of the ring, or is contained in auxiliary members mounted in openings in the ring or mounted on the surface of the ring. In all instances, the loss of tire pressure due to emergency conditions causes the lubricant to be released so as to reduce the friction between the inner face of the tire cover and the ring.