Resilient tires and wheels – Tires – resilient – Anti-skid devices
Patent
1994-10-17
1996-06-04
Maki, Steven D.
Resilient tires and wheels
Tires, resilient
Anti-skid devices
152523, B60C 1302, B60C10100
Patent
active
055224423
ABSTRACT:
A pneumatic radial tire including a plurality of main grooves so formed on a tread surface of a tread portion as to extend in a tire circumferential direction and ribs defined by said main grooves, characterized in that a thin groove extending inward and obliquely is formed on a transverse side surface of shoulder portion of the tread portion in the tire circumferential direction, a ground non-contacting rib protruding from the transverse side surface is formed inside the thin groove in a radial direction in such a manner as to be separated by the thin groove, and angle .alpha. of the transverse side surface to a normal of a plane S inclusive of the tread surface is from 20.degree. to 60.degree., an angle .beta. of the thin groove to the normal of the plane S describes a line having an angle of 10.degree. to 50.degree., and a vertical distance h of the groove bottom of the thin groove from the plane S, a groove depth d of the main groove and a vertical distance g of the top surface of the ground non-contacting rib from the plane S satisfy the relation h/d=0.5 to 1.2 and g/h=0.5 to 0.8.
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patent: 3024825 (1962-03-01), Kutsmichel
patent: 3176748 (1965-04-01), Giebhart
patent: 4739812 (1988-04-01), Ogawa et al.
patent: 4905747 (1990-03-01), Ogawa
patent: 4993466 (1991-02-01), Ochiai
patent: 4995437 (1991-02-01), Enoki et al.
patent: 5010936 (1991-04-01), Numata et al.
patent: 5115849 (1992-05-01), Corner
patent: 5323825 (1994-06-01), Yamagishi et al.
Maki Steven D.
The Yokohama Rubber Co.
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