Resilient tires and wheels – Tires – resilient – Anti-skid devices
Reexamination Certificate
2008-11-24
2009-12-15
Maki, Steven D (Department: 1791)
Resilient tires and wheels
Tires, resilient
Anti-skid devices
C152S209800, C152S209900, C152S209180, C152S903000
Reexamination Certificate
active
07631675
ABSTRACT:
Provided is a pneumatic tire in which improvement is achieved in a wet performance and reduction in vehicle exterior noise while ensuring a dry performance. The pneumatic tire has a designated fitting direction relative to a vehicle, in which four main grooves extending in a circumferential direction of the tire are provided on a tread portion, two grooves out of these main grooves are located on each of both sides of a tire equator, five lines of land portions are defined by the main grooves, a center land portion located on the tire equator is a rib which continuously extends in the circumferential direction of the tire without being sectioned, a plurality of arcuate grooves each extending in an arc shape are provided on each of a pair of second land sections located respectively on both sides of the center land section, an end of each of the arcuate grooves is connected to the main groove on an inner side of the vehicle, another end of the arcuate groove is connected to the adjacent arcuate groove, a repeat pitch Po of the arcuate grooves on the second land portion located on an outer side of the vehicle is set greater than a repeat pitch Pi of the arcuate grooves on the second land portion located on the inner side of the vehicle, and a proportion Po/Pi of the pitches is set in a range from 1.5 to 3.0.
REFERENCES:
patent: 4479525 (1984-10-01), Graas
patent: 5407005 (1995-04-01), Consolacion et al.
patent: 5996661 (1999-12-01), Gerresheim et al.
patent: D505380 (2005-05-01), Sugitani et al.
patent: D558125 (2007-12-01), Miyabe et al.
patent: D583750 (2008-12-01), Behr et al.
patent: 2008/0236714 (2008-10-01), Kojima
patent: 114594 (1989-04-01), None
patent: A 7-164829 (1995-06-01), None
patent: A 8-53004 (1996-02-01), None
patent: A 2000-25421 (2000-01-01), None
patent: B2 3793513 (2003-09-01), None
patent: A 2004-17863 (2004-01-01), None
patent: A 2004-155416 (2004-06-01), None
patent: A 2004-523422 (2004-08-01), None
patent: A 2006-131081 (2006-05-01), None
patent: A 2007-15655 (2007-01-01), None
patent: A 2007-83810 (2007-04-01), None
Greer Burns & Crain Ltd.
Maki Steven D
The Yokohama Rubber Co. Ltd.
LandOfFree
Pneumatic tire with tread having circumferential grooves and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pneumatic tire with tread having circumferential grooves and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pneumatic tire with tread having circumferential grooves and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4097533