Tire with shock absorbing configured rubber tread
AssigneeThe Goodyear Tire & Rubber Company
InventorsPaul Harry Sandstrom, Lewis Timothy Lukich, Neil Arthur Maly
Life of this patent
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Abstract
The invention relates to a pneumatic rubber tire with an outer, circumferential tread wherein said tread has a tread configuration comprised of spaced apart, raised lugs designed to be shock absorbingly ground contacting, wherein said tread and lugs are comprised of rubber selected from butyl rubber, halobutyl rubber or isobutylene-derived rubber. Said tire may also contain sidewalls comprised of one or more of such rubber. Thus, such tread is a combination of specific structural configuration and specific rubber composition to create a shock absorbing effect.
Claims7
A pneumatic rubber tire having a circumferential rubber tread configured with spaced apart raised lugs designed to be shock absorbingly ground contacting, a supporting carcass underlying said tread, a pair of spaced apart beads, and rubber sidewalls extending radially outward from said beads to the peripheral edges of said tread, wherein said raised lugs have a height from their surface intended to be ground contacting to the base thereof at the surface of said tread in a range of about 12.5 cm to about 80 cm, wherein the tread rubber composition of said tread and lugs is comprised of, based upon parts by weight per 100 parts by weight rubber (phr):
- (A) about 70 to about 100 phr of brominated copolymer of isobutylene and paramethylstyrene, and
- (B) zero to about 30 phr of at least one diene-based elastomer selected from polymers of isoprene and/or 1,3-butadiene and copolymers of styrene with isoprene and/or 1,3-butadiene;
- wherein said tread rubber has a rebound (23° C.) physical property value of less than 25 and a Shore A Hardness (23° C.) physical property value of at least 60.
Dependencies are inferred from the claim text.