Three-dimensional tread sipes and mold blade for forming three-dimensional tread sipes

US7467652B2 · kind B2 · utility

Assignee

• The Goodyear Tire & Rubber Company · US

Inventors

• Oliver Knispel · Gelnhausen, DE
• Thomas Michael Hirsch · Osthofen, DE
• Helmut Wolfgang Fehl · Leingarten, DE
• Saburo Miyabe · Großkrotzenburg, DE

Key dates

• Filing date: May 19, 2005
• Grant date: Dec 23, 2008
• Expiry date: Aug 11, 2025

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S152/03
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

Both a mold blade for forming sipes and the sipe so formed in a tire tread element have three-dimensional portions. In the formed sipe, the three-dimensional portion creates a constant interlocking of the opposing sipe faces. The blade and the sipe have two radially adjacent rows of projections, wherein the projections are separated by a planar section, the planar section having a defined length and width.