Claims
- 1. A tire having a tread, comprising:
a central raised rib having first and second lateral edges and extending about the tire in a generally circumferential manner, said central raised rib being substantially disposed on an equatorial plane of the tire; a plurality of transverse raised ribs having first and second radial edges and being axially spaced along a tread section width on opposite sides of said central raised rib, each of said transverse raised ribs being substantially V-shaped and connected to said central raised rib.
- 2. A tire having a tread, comprising:
a central raised rib extending about the tire in a generally circumferential manner, said central raised rib being substantially disposed on an equatorial plane of the tire; a plurality of transverse raised ribs being axially spaced along a tread section width; and, wherein each of said transverse raised ribs extends in a substantially equidistant length from the equatorial plane, across said tread section width of the tire and over a lateral edge such that the combination of said central raised rib and any pair of transverse raised ribs oppositely disposed about the longitudinal rib and is substantially W-shaped in the axial direction.
- 3. The tire having the tread of claim 1, wherein said transverse rib width to central rib width forms a ratio trw/aw being at least about 1.5 to 1.
- 4. The tire having the tread of claim 1, wherein said tread further comprises a net to gross ratio ranging from substantially 20% to substantially 50%.
- 5. A tire having a tread, comprising:
a central raised rib extending about the tire in a generally circumferential manner, said central raised rib being substantially disposed on an equatorial plane of the tire; a plurality of transverse raised ribs being axially spaced along a tread section width; and, wherein said tread includes a net to gross ratio that ranges from substantially 26% to 36%.
- 6. The tire having the tread of claim 1, wherein an angle is formed between said first lateral edge of said central raised rib and said first radial edge of said transverse rib, said angle ranging from substantially 45 degrees to substantially 85 degrees.
- 7. The tire having the tread of claim 1, wherein an angle is formed between said first lateral edge of said central raised rib and said first radial edge of said transverse rib, said angle being substantially within the range of 45 to 85 degrees.
- 8. The tire having the tread of claim 6, wherein a radius interconnects said first lateral edge of said central raised rib and said first radial edge of said transverse rib.
- 9. The tire having the tread of claim 1, wherein an angle is formed between said first lateral edge of said central raised rib and said second radial edge of said transverse rib, said angle ranging from substantially 85 degrees to substantially 125 degrees.
- 10. The tire having the tread of claim 1, wherein an angle is formed between said first lateral edge of said central raised rib and said second radial edge of said transverse rib, said angle being substantially 105 degrees.
- 11. The tire having the tread of claim 1, wherein a radius interconnects said first lateral edge of said central raised rib and said second radial edge of said transverse rib.
- 12. The tire having the tread of claim 11, wherein said radius is substantially 0.5 inches.
- 13. A tire having a tread, comprising:
a central raised rib having first and second lateral edges and extending about the tire in a generally circumferential manner, said central raised rib being substantially disposed on an equatorial plane of the tire; a plurality of transverse raised ribs having first and second radial edges and being axially spaced along a tread section width on opposite sides of said central raised rib, each of said transverse raised ribs being substantially V-shaped and connected to said central raised rib; and, wherein said second radial edge comprises a connection end for connecting said second radial edge to said central raised rib, each of said V-shaped transverse ribs further comprises an outer vertex and an inner vertex, said inner vertex having a vertex angle, said vertex angle ranging from substantially 85 degrees to substantially 125 degrees.
- 14. The tire having the tread of claim 13, wherein the ratio of the radial distance iv, from said connection end to said inner vertex, to the radial distance ov, from the connection end to said outer vertex, is substantially in the range of 0.73 to 0.79.
- 15. The tire having the tread of claim 1, wherein said central raised rib further comprises a tread depth, said tread depth being measured from a tire surface to a top of the rib, said tread depth being in the range of approximately 0.25 inches to approximately 0.5 inches.
- 16. The tire having the tread of claim 15, wherein said raised tread depth is substantially 0.35 inches.
- 17. The tire having the tread of claim 1, wherein the tire is grooveless.
- 18. The tire having the tread of claim 1, wherein said tread section width ranges between substantially 7.5 inches and substantially 8.12 inches.
- 19. The tire having the tread of claim 1, wherein the ratio, trw/tsw, of the transverse rib width trw, to the tread section width tsw, is substantially within the range of 0.93 to 0.99.
- 20. The tire having the tread of claim 1, wherein any pair of said plurality of transverse raised ribs oppositely disposed about said central rib extends across said tread section width a transverse rib width ranging from substantially 7.2 inches to substantially 7.8 inches.
- 21. The tire having the tread of claim 1, wherein said central raised rib and said transverse raised ribs further comprise a chamfer on the edges thereof for use in providing optimal traction for an associated vehicle.
- 22. The tire having the tread of claim 1, wherein said plurality of transverse raised ribs is integrally formed with said central raised rib.
- 23. The tire having the tread of claim 1, wherein the height of said traverse raised rib and the height of said central raised rib is substantially equal.
- 24. The tire having the tread of claim 1, wherein the difference in the height of said traverse raised rib and the height of said central raised rib is less than 5%.
- 25. The tire having the tread of claim 1, wherein the width of said central raised rib is substantially uniform.
- 26. The tire having the tread of claim 1, wherein said transverse raised ribs spaced along a tread section width on opposite sides of said central raised rib are not staggered.
- 27. A tire for a tread, comprising:
a pair of lateral edges; a pair of sidewalls, each sidewall communicating with one of said lateral edges; a tread section width located between said pair of lateral edges; an equatorial plane located perpendicular to an axis of rotation and passing through said tire tread; a net-to-gross ratio substantially within the range of 26% to 36%; said tire tread further comprising:
a substantially continuous central raised rib, said central raised rib extending circumferentially about said tire and being disposed on said equatorial plane, said central raised rib further comprising an axial width aw; a plurality of pairs of transverse raised ribs,
each transverse raised rib having first and second connection ends and a distal end, each transverse raised rib being substantially V-shaped and integrally formed with said central raised rib, said transverse ribs axially extending a substantially equidistant length from said central raised rib across said tread section width and over one of said lateral edges such that the combination of the pair of transverse raised ribs and said central raised rib being substantially W-shaped in the axial direction, said plurality of pairs of transverse raised ribs being radially spaced about the circumference of said tire such that a plurality of voids are defined between a first radial edge of one transverse raised rib, one lateral edge of said central raised rib, and a second radial edge of the next radially spaced transverse raised rib, said transverse raised ribs and central raised rib further comprising a chamfer on the edges thereof for use in providing optimal traction for the associated riding mower, said transverse ribs having a transverse rib width which forms a ratio trw/aw with said central raised rib of at least 1.5 to 1, said V-shaped transverse raised ribs pointing in a rearwardly direction relative to a back end of the associated riding mower, and; a first radial edge angle formed between said first lateral edge of said central raised rib and said first radial edge of said transverse rib being substantially within the range of 45 to 85 degrees, said first lateral edge and first radial edge being interconnected by a first radius; a second radial edge angle formed between said first lateral edge of said central raised rib and said second radial edge of said transverse rib being substantially within the range of 85 to 125 degrees, said first lateral edge and second radial edge being interconnected by a first radius.
Parent Case Info
[0001] This application claims the benefit of U.S. Provisional Application, Ser. No. 60/213,910, filed on Jun. 26, 2000, in Express Mail Label No. EL514600944US, by the same inventors, Carl Musat and Robert Davis, entitled TREAD FOR ZERO-TURN MOWER TIRE.
Provisional Applications (1)
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Number |
Date |
Country |
|
60213910 |
Jun 2000 |
US |