Resilient tires and wheels – Tires – resilient – Anti-skid devices
Reexamination Certificate
2007-09-18
2007-09-18
Maki, Steven D. (Department: 1733)
Resilient tires and wheels
Tires, resilient
Anti-skid devices
C152S209210, C152S209230, C152SDIG020, C152S902000
Reexamination Certificate
active
11183919
ABSTRACT:
A pneumatic tire including sipes that have at least one ends positioned within blocks. The sipes are arranged such that each of the sipes meanders from the one end to the other end thereof to form a meandrous shape, and as the depth of the sipes increases, the meander width of the sipes gradually increases from their openings to at least the 80%-worn position of the blocks. The sipes each have a sipe length L, which is defined as a center line length between an intersection of a center line passing the center of the meander width of the meandrous shape with a first straight line and an intersection of the center line with a second straight line, the first straight line being orthogonally drawn to the center line from the one end of the sipe and the second straight line being orthogonally drawn to the center line from the other end of the sipe at the same depth position of the sipe, the sipe length L gradually decreasing as the sipe depth increases. The ratio L80/M0of the sipe length L80at the 80% worn position to the opening length M0of the sipes is in the range of 0.8 to 0.95, and the ratio M80/M0of the actual length M80of the sipes at the 80% worn position to the opening length M0is in the range of 1.0 to 1.15.
REFERENCES:
patent: 2272879 (1942-02-01), Hargraves
patent: 5851322 (1998-12-01), Hayashi
patent: 2005/0016652 (2005-01-01), Iwasaki
patent: 933235 (1999-01-01), None
patent: 02-246810 (1990-10-01), None
patent: 09-183303 (1997-07-01), None
patent: WO 2003/055698 (2003-07-01), None
Greer Burns & Crain Ltd
Maki Steven D.
The Yokohama Rubber Co. Ltd.
LandOfFree
Pneumatic tire with tread surface having blocks with sipes... 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 surface having blocks with sipes..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pneumatic tire with tread surface having blocks with sipes... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3749384