The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 03, 1989
Filed:
Mar. 01, 1988
Applicant:
Inventor:
Alain Lagnier, Romagnat, FR;
Assignee:
Compagnie Generale des Etablissements Michelin, Clermont-Ferrand Cedex, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60C / ;
U.S. Cl.
CPC ...
1522 / ; 152D / ;
Abstract
In order to improve the wear life of a tread having elements in relief which are provided with numerous incisions, each element in relief which is defined by circumferential grooves and transverse grooves comprises an even number of incisions which have rectilinear traces on the surface of the tread and, in cross-section, broken line or undulated line traces, the mean axes of which are perpendicular to the surface of the tread, and in such manner that the trace of one incision is identical to the symmetrical trace, with respect to its mean axis, of the trace of a circumferentially adjacent incision.