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:
Oct. 22, 2002
Filed:
Jan. 21, 2000
Applicant:
Inventor:
Robert Ciprian Radulescu, Perignat les Sarlieve, FR;
Assignee:
Michelin Recherche et Technique S.A., Route Louis-Braille, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60C 1/104 ; B60C 1/112 ; B60C 1/113 ; B60C / ;
U.S. Cl.
CPC ...
B60C 1/104 ; B60C 1/112 ; B60C 1/113 ; B60C / ;
Abstract
The present invention provides a pneumatic tire having a tread portion comprising a plurality of axially spaced apart essentially longitudinal grooves separating essentially longitudinal ribs. On at least one of said ribs, transverse grooves or cuts repeat in the circumferential direction to form first and second land portions wherein the first land portions comprise blocks having a circumferential length greater than that of the second land portions. Said second land portion acts as a sacrificial bridge which provides traction improvement and minimizes undesirable surface anomalies during the service life of the tire.