Resilient tires and wheels – Tires – resilient – Anti-skid devices
Patent
1984-06-19
1986-10-21
Ball, Michael
Resilient tires and wheels
Tires, resilient
Anti-skid devices
D12140, B60C 1111
Patent
active
046179763
ABSTRACT:
Disclosed herein is a tire for use in running on the soft ground, which comprises a pair of sidewalks, a tread portion toroidally connected with both of the sidewalls and a carcass reinforcing the whole tire. The tread portion is provided with plural rows of projecting blocks or lugs in a circumferential direction of the tire, which are isolated from one another by traverse grooves, such that the total ground-contacting area of the blocks or lugs to the total area of the tread is in a range of 15 to 30%, and is characterized in that in the bottom of each of the traverse grooves is provided a recess having the maximum depth equal to 5-20% of the height of the adjacent block or lug for facilitating the flexural deformation of the tread.
REFERENCES:
patent: 3707177 (1972-12-01), Boileau
1978 Tread Design Guide, Bennett Sarfield Publication, Tire Guides, Inc, The Tire Information Center, Commack, N.Y., p. 228.
Ball Michael
Bridgestone Corporation
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