Resilient tires and wheels – Tires – resilient – Anti-skid devices
Patent
1984-12-10
1986-12-23
Ball, Michael
Resilient tires and wheels
Tires, resilient
Anti-skid devices
B60C 1106
Patent
active
046306617
ABSTRACT:
The tire comprises a tread with central grooves between exterior grooves. Both types of grooves extend in a zig-zag shape in the circumferential direction and define ribs between them. Each one of the central grooves is bounded by sidewalls which define two opposite sidewall sections between angled regions of the central grooves. The two sidewall sections alternate from one angled region to the other in the circumferential direction of the tread. A first sidewall section of the two opposite sidewall sections extends at least approximately normally to the tread and a second sidewall section of the two sidewall sections comprises two sidewall portions extending substantially normally to the tread and an interconnecting flank portion therebetween which extends at an inclination in the range of 20.degree. to 60.degree. with respect to a line perpendicular to the tread. The angled regions are located between consecutive groove sections and each one of the angled regions comprises a protruding or salient angled region and a receding or reentrant angled region each of which, in turn, is constituted by a first corner section extending substantially normally to the tread and a second corner section extending at an inclination towards the base of the groove and forming two substantially triangularly shaped portion which converge to a common point in the direction towards the base of the groove.
REFERENCES:
patent: 2779378 (1957-01-01), Robertson
patent: 3055410 (1962-09-01), Caulkins
patent: 3411559 (1968-11-01), Verdier
patent: 3951193 (1976-04-01), Yeager
patent: 4114671 (1978-09-01), Maiocchi et al.
patent: 4423760 (1984-01-01), Treves et al.
Ball Michael
Kleeman Werner W.
Semperit Reifen AG
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