Resilient tires and wheels – Tires – resilient – Anti-skid devices
Reexamination Certificate
2005-08-03
2009-06-09
Maki, Steven D (Department: 1791)
Resilient tires and wheels
Tires, resilient
Anti-skid devices
C152S209240
Reexamination Certificate
active
07543617
ABSTRACT:
A pneumatic tire including a longitudinal main groove formed concavely on a tread surface thereof in a radial direction thereof by extending the longitudinal main groove linearly in a circumferential direction thereof; and narrow grooves formed concavely on at least an outer side surface of both side surfaces of the longitudinal main groove opposed to each other in a widthwise direction of the pneumatic tire by spacing the narrow grooves at certain intervals in a circumferential direction of the pneumatic tire. Each of the narrow grooves is so configured that a longer side of each of the narrow grooves extends in the radial direction of the pneumatic tire and that a shorter side of each of the narrow grooves extends in the circumferential direction of the pneumatic tire. A sectional configuration of a position having a maximum sectional area in each of the narrow grooves is circular arc-shaped.
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Birch & Stewart Kolasch & Birch, LLP
Maki Steven D
Sumitomo Rubber Industries Ltd.
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