Tread structure for pneumatic vehicle tire

US4471825A · kind A · utility

Assignee

• Continental Gummi-Werke Aktiengesellschaft · DE

Inventors

• Dieter Kuhn · Marburg, DE
• Udo Frerichs · Langenhagen, DE
• Henner Pieper · Langenhagen, DE
• Heinz-Dieter Rach · Garbsen, DE

Key dates

• Filing date: Aug 26, 1982
• Grant date: Sep 18, 1984
• Expiry date: Aug 26, 2002

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S152/902
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A tread structure for pneumatic tires, especially for motor vehicles, having two circumferential ribs which include essentially rectangular blocks; these blocks are arranged sequentially one after the other in the circumferential direction of the tire, and are separated from each other by S-shaped fine slits. Several circumferential main grooves extend in a zig-zag manner in such a way as to form angles of 90.degree.. Respective separating grooves separate the tread from the sidewalls of the tire. Three main grooves are provided which enclose the two circumferential ribs of essentially rectangular blocks. The central main groove is located in the zenith portion of the tire; the outer main grooves are respectively connected with the adjacent separating grooves by transverse grooves which are disposed at a slight incline to the transverse direction. The tread profile depth is at most 5 mm.