Run-flat low-pressure all terrain vehicle (ATV) tire
First Claim
1. In combination a run-flat low-pressure all terrain vehicle tire and a rim, the tire comprising:
- an annular tread, the tread having a pair of lateral edges;
a pair of annular bead cores, and wherein the annular bead cores have a substantially flat radially inner base, the inner base having a diameter d, and an axial width w,a carcass radially inward of the annular tread, the carcass having one or more cord reinforced plies extending to and wrapped about the bead cores;
an elastomeric apex adjacent to and extending radially outward from each bead core; and
a first pair of elastomeric inserts radially inward of the carcass plies one elastomeric insert extending radially inward from each lateral edge of the tread toward each bead core and terminating radially and axially inward of a radially outer portion of the elastomeric apex and the rim comprising;
a hump and a rim flange, the rim flange having an axially inward surface, the distance between the hump and the axially inward surface of the rim being the bead seat, the bead seat having a width W, the rim having a nominal diameter D, the hump having a diameter DH ; and
the tire satisfies the relationship wherein the diameter d of the inner base of the bead core is substantially equal to the diameter DH and the width w of the inner base of the bead core is in the range of 65% to 90% of the width W of the bead seat.
9 Assignments
0 Petitions
Accused Products
Abstract
The invention relates to a run-flat low inflation pressure all terrain vehicle (ATV) tire 10,11, wherein the tire 10,11 has at least one pair of elastomeric inserts 42,46, one insert 42,46 extending radially inward from each tread edge 14,16 toward a bead core 26. The radially inner end of the insert is radially inward of an elastomeric apex 48 located above the respective bead cores 26. The bead cores 26 have a wide substantially flat radially inner base which when the tire 10,11 is mounted on a conventional ATV design rim enable the tire 10,11 to remain seated onto the rim even when operating without any inflation. The preferred tire 10,11 has a unique tread 12. The central portion 13 of the tread 12 has circumferential rows of blocks or lugs 94. The lugs of laterally adjacent rows in a central region 13 of the tread 12 are connected by tie bars 93 which when employed on these run-flat tires keeps the tread lugs 94 in ground contact even when the tire is operated uninflated. The inventive tire 10,11 can be constructed providing limited run-flat capability or with a full run-flat capability never requiring air inflation during use.
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Citations
13 Claims
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1. In combination a run-flat low-pressure all terrain vehicle tire and a rim, the tire comprising:
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an annular tread, the tread having a pair of lateral edges; a pair of annular bead cores, and wherein the annular bead cores have a substantially flat radially inner base, the inner base having a diameter d, and an axial width w, a carcass radially inward of the annular tread, the carcass having one or more cord reinforced plies extending to and wrapped about the bead cores; an elastomeric apex adjacent to and extending radially outward from each bead core; and a first pair of elastomeric inserts radially inward of the carcass plies one elastomeric insert extending radially inward from each lateral edge of the tread toward each bead core and terminating radially and axially inward of a radially outer portion of the elastomeric apex and the rim comprising; a hump and a rim flange, the rim flange having an axially inward surface, the distance between the hump and the axially inward surface of the rim being the bead seat, the bead seat having a width W, the rim having a nominal diameter D, the hump having a diameter DH ; and the tire satisfies the relationship wherein the diameter d of the inner base of the bead core is substantially equal to the diameter DH and the width w of the inner base of the bead core is in the range of 65% to 90% of the width W of the bead seat. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification