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:
Apr. 08, 1997
Filed:
Dec. 02, 1994
Applicant:
Inventor:
Hiroaki Sakuno, Kobe, JP;
Assignee:
Sumitomo Rubber Industries, Ltd., Hyogo-ken, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60C / ;
U.S. Cl.
CPC ...
1522 / ;
Abstract
A pneumatic tire having a tread portion capable of reducing the running noise. The tread portion is provided with a circumferentially extending main groove and lateral grooves extending from the main groove towards one side thereof, the circumferential pitches of the lateral grooves including at least two different pitches. The width of the main groove at the groove top is substantially constant along its length, but the sectional area is changed along its length such that