Resilient tires and wheels – Tires – resilient – Anti-skid devices
Patent
1981-06-15
1983-06-21
Kimlin, Edward C.
Resilient tires and wheels
Tires, resilient
Anti-skid devices
D12145, D12146, D12147, B60C 1106
Patent
active
043889603
ABSTRACT:
A motorcycle tire suitable for running on a road having rain grooves formed on the surface, which has a first main groove circumferentially continuously formed in a central region of the tread portion and second main grooves formed at least one run of unitary groove portions at each side of and with space from the first main groove and having interrupted portions at intervals in the circumferential direction of the tire. The first main groove comprises a plurality of groove segments and a plurality of connecting groove segments, and the groove segments, which lie circumferentially alternately at one and the other of two regions of the tread portion divided and lying closely along the center line of the tread portion and lie parallel to the center line and circumferentially successively spaced, are connected by the connecting groove segments which extend across the center line and connect together the facing ends of each two adjacent groove segments. The ratio of the interrupted portions to the pitch of repetition of unitary groove portions of the second main grooves is from 20 to 50%.
REFERENCES:
patent: D252871 (1979-09-01), Gill et al.
patent: 3547174 (1970-12-01), Mills
patent: 3739828 (1973-06-01), Schaevitz
patent: 3799230 (1974-03-01), Montagne
patent: 4271886 (1981-06-01), Bachmann et al.
Iwasaki Koichi
Nakata Hajime
Wada Makoto
Boland Lois E.
Kimlin Edward C.
The Yokohama Rubber Co. Ltd.
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