Resilient tires and wheels – Tires – resilient – Anti-skid devices
Reexamination Certificate
2007-05-04
2010-11-23
Maki, Steven D (Department: 1791)
Resilient tires and wheels
Tires, resilient
Anti-skid devices
C152S209220, C152S209250, C152S209270, C152SDIG020, C152S901000
Reexamination Certificate
active
07836926
ABSTRACT:
A circumferential sipe extends continuously in the circumferential direction of the tire in the center region of the tread surface section of a rib defined between circumferential grooves. Widthwise sipes are disposed at prescribed intervals in the circumferential direction of the tire in the tread surface section, the widthwise sipes extending in the widthwise direction of the tire in crossing relationship to the circumferential sipe, the widthwise sipes each having opposing terminal ends open to the circumferential grooves. The circumferential sipe changes in depth periodically in such a manner that the circumferential sipe is shallow between adjacent widthwise sipes. The widthwise sipes changes in depth in such a manner that they are greater in depth in the center region and end regions of the tread surface section.
REFERENCES:
patent: 2938560 (1960-05-01), Wallace et al.
patent: 4449560 (1984-05-01), Tansei et al.
patent: 5772806 (1998-06-01), Moriya
patent: 6142200 (2000-11-01), Feider et al.
patent: 6196288 (2001-03-01), Radulescu et al.
patent: 2002/0033214 (2002-03-01), Carra et al.
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patent: 05-169917 (1993-07-01), None
patent: 2000-225815 (2000-08-01), None
patent: 2002-067621 (2002-03-01), None
patent: 2003-226116 (2003-08-01), None
Machine translation for 2003-226116 (no date).
Machine translation for Japan 2002-067621 (no date).
Machine translation for Japan 2000-225815 (no date).
Machine translation for Japan 05-169917 (no date).
Greer Burns & Crain Ltd.
Maki Steven D
The Yokohama Rubber Co. Ltd.
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