TH9674B - "Improved agricultural tires" - Google Patents

Abstract

Improved pneumatic propulsion tire 10 for use in agriculture under moist soil conditions. or wet that requires high floating rubber and has deep tread characteristics as described This improvement includes the utilization of tread 13 with a net-to-gross rate of 15 to 25%, and where tread 13 There are protrusions 18A, 18B that differ larger than 75 but less than 95% of the R2 protrusions. These protrusions when coexisted with some radial 20.8 R38 are designed to support and bear the load. For extended distances of 170% dynamic load-bearing weight of rim association standards. and tires loaded on the trailing surface without the error of protruding parts.

Claims (9)

1. Inflatable powered tires Which has been improved for agricultural use under moist soil conditions Or wet where a special high buoyancy and deep tread feature, this tire has this frame, as well as a pair of sidewalls, with an axial outer face. Defined as the maximum cross-section width of this tire, the maximum cross-section width is 24.5 inches (62.2 cm) or less, this tread includes the inner tread surface. The contour has one pair of the lateral edges of the Equatorial plane parallel to and at the same distance from the lateral edges. Two rows of sections Overhang of the tread Placed apart along the perimeter of the sheet outward. Along the radial from the inner tread surface to the road contact surface of each row of protrusions of the tread overhangs that are separated from each other along the perimeter Roll out along the perimeter and inward along the axis. From one lateral edge that differs by the approximate angle of the slope by more than 45 degrees, as measured from the smooth equatorial plane. The first row of the protrusions extends from the first side edge. The second bank of the protrusion Roll out from the second side edge. The second row's protrusions are similar to the first row's protrusions, but opposite. Herein, improvements include The tread has a nate-to-gross ratio in the range of 15 to 25%. The overhang has an early edge and the trailing edge extends between the outer and inner axial protrusions, and The overhang header is at the inner end. The edge at the beginning is curved, spreading out along the perimeter. And along the axial to the equatorial plane of the tire to the head of the protrusion The head of the protrusion extends inward axially from the primal edge at the axis of at least 45% of the tread width. And extends beyond the equatorial plane of the tire The trailing edge is truly parallel to the upstream edge not less than 60% of the length of the protrusion. And was placed at perpendicular distance W from the top edge The protrusion head is enlarged when compared with other protrusions and extends inward axially from the preliminary edge. And radiates as an angle relative to the axis of rotation of the tire from the end edge to the inner end axial The inner end is wrapped in the equatorial plane at least 5% of the tread width. The protrusion headers have a width that is at most less than 2.0 times the perpendicular distance between the upstream edge and the tail edge of the protrusion, and the overhang has a corresponding height. Radial radius from the road contact surface. To the surface of the tread, more than 150% of the protrusion height R1, according to the Tire Manufacturers Association. And ranges from 75% to 95% of the R2 protrusion height according to the Tire Manufacturers Association standards. The overhang has an element that holds the sheet from the inner tread surface to the road contact surface. This retainer is blended along the line of contact with the inner tread surface. Without sliding over the attachment of the protruding part near or changing the contour of the inner tread surface That crosses the equatorial plane of the axial tire 2. Tires according to claim 1 here, the surface of the tread inside And the near protrusion of the first row of the overhang forming a period For sending the soil to the outside along the axis to the edge First edge side And the surface of the tire tread inside And the near protrusion of the second row of the overhang, forming a channel for delivering the earth to the outside along the axis to the side of the second edge. Mitigate And the maximum depth at the equatorial plane is equal to the height of the radial protrusion. The depth of the channel is truly constant. Over two thirds of the axial tread width of this tire. 3. Rubber according to the claim 1 has a Nate-to-Gross ratio in the range of 16% to 20%. 4. Tires according to claim 1 Here, the perpendicular distance between the initial edge and the trailing edge that exceeds 60% of the length of the overhang is approximately 3.8 cm (1 1/2 finger) 5. Tires according to claim 4 Here, the overhang has a radial height of less than 90% of the R2 overhang according to the Tire Manufacturers Association standard. 6. The tire according to claim 1 here, the overhang has a radial radial outer ground contact surface. The top surface of the tread is in contact with the outermost ground along the radius with the Less than 17.3% in total within the top of one tread is defined as the tread arc width times the length of the top. 7. Tire according to claim 4 Here, the inner tread surface has a flat contour surface, periodically spread out at least 10% of TW on both sides of the Equatorial plane. And the surface of the tread inside is between the protruding parts near it does not change the inner tread thickness 8. Tires according to claim 1 here, this is a radial tire. 9. Tires according to claim 1 Here, the overhang has an average slope angle of less than 45 degrees when measured from the equatorial plane.