Agricultural tire and tread lug therefor
First Claim
1. A pneumatic tire for agricultural use having a tread including an inner tread surface and a plurality of spaced tread lugs, the inner tread surface being spaced between tread lugs, each of the lugs having at least one sidewall, and in cross-section comprising:
- a first substantially straight portion extending radially inwardly from a cutting edge of a radially outermost surface of said lug at a first angular inclination in the range of 0°
to 5°
with respect to the radial direction;
a second substantially straight portion extending radially inwardly at a second angular inclination in the range of 12°
to 25°
with respect to the radial direction;
a first concave curved portion extending from said first straight portion to the second straight portion;
a second concave curved portion extending radially inwardly from the second straight portion to the inner tread surface; and
wherein each of such lugs is spaced apart from another of such lugs by a distance of at least 12% to about 15% of the tread width and wherein the net-to-gross ratio of the tire is in the range of 25% to 40%.
1 Assignment
0 Petitions
Accused Products
Abstract
A pneumatic tire for agricultural use has a tread including an inner tread surface and a plurality of spaced tread lugs (170). The tread lug (170) for use with off-the-road or agricultural, has at least one sidewall in cross-section having two different angular inclinations. The sidewall has a first straight portion (202) which extends radially inwardly from an edge (204) of the ground engaging surface (200) of the lug (170) at a first angular inclination (b) with respect to the radial direction. A second straight portion (208) extends radially inwardly at a second angular inclination (c) with respect to the radial direction, while a first concaved curved portion (212) extends from the first straight portion (202) to the second straight portion (208). A second concaved curved portion (214) then extends radially inwardly from the second straight portion (208) to an inner tread surface (151).
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Citations
5 Claims
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1. A pneumatic tire for agricultural use having a tread including an inner tread surface and a plurality of spaced tread lugs, the inner tread surface being spaced between tread lugs, each of the lugs having at least one sidewall, and in cross-section comprising:
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a first substantially straight portion extending radially inwardly from a cutting edge of a radially outermost surface of said lug at a first angular inclination in the range of 0°
to 5°
with respect to the radial direction;a second substantially straight portion extending radially inwardly at a second angular inclination in the range of 12°
to 25°
with respect to the radial direction;a first concave curved portion extending from said first straight portion to the second straight portion; a second concave curved portion extending radially inwardly from the second straight portion to the inner tread surface; and wherein each of such lugs is spaced apart from another of such lugs by a distance of at least 12% to about 15% of the tread width and wherein the net-to-gross ratio of the tire is in the range of 25% to 40%. - View Dependent Claims (2, 3, 4, 5)
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Specification