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:
May. 23, 1995
Filed:
Aug. 20, 1992
Applicant:
Inventors:
Toshikatsu Naoi, Kodaira, JP;
Seiichiro Tokunaga, Kodaira, JP;
Assignee:
Bridgestone Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60C / ; B60C / ;
U.S. Cl.
CPC ...
1522 / ; 152532 ;
Abstract
A pneumatic tire comprises a carcass of at least one carcass ply, a belt comprised of at least three belt layers, and a tread provided with plural circumferential grooves and island portions defined by these circumferential grooves, in which the tread is comprised of at least two rubber layers, one of which layers being a foamed rubber layer not exposed at a side of ground contact surface of the tire. In this case, the foamed rubber layer is extended up to a buttress portion of the tire, whereby noises produced during the running of the tire are effectively reduced without the degradation of wear resistance.