SEMI-PNEUMATIC TIRE

• US 20170282648A1
• Filed: 03/30/2017
• Published: 10/05/2017
• Est. Priority Date: 04/01/2016
• Status: Abandoned Application

• Current Assignee: OTR Wheel Engineering
• Original Assignee: OTR Wheel Engineering
• Inventors: Taylor, Fredrick
• Application Number:
  US15/473,775
• Publication Number:
  US 20170282648A1
• Time in Patent Office: Days
• CPC Class Codes: B60C 11/0083 characterised by the curvature of the tyre tread
• CPC Class Codes: B60C 11/01 Shape of the shoulders between tread and sidewall, e.g. rounded, stepped or cantilevered
• CPC Class Codes: B60C 3/02 Closed, e.g. toroidal, tyres
• CPC Class Codes: B60C 3/04 characterised by the relative dimensions of the section, e.g. low profile B60C3/06 takes precedence

Abstract

A semi-pneumatic tire including an annular outer portion having a surface engaging crown portion, a first shoulder portion and a second shoulder portion; an annular base portion spaced radially inward from the outer portion; and first and second sidewalls, laterally spaced, connecting the outer portion and base portion forming a closed chamber. The width of the crown portion is less than the width of the base portion.

Claims

1. A tire, comprising:

an annular outer portion having a surface engaging crown portion, a first shoulder portion and a second shoulder portion;

an annular base portion spaced radially inward from the outer portion; and

first and second sidewalls, laterally spaced, connecting the outer portion and the base portion forming a closed chamber;

wherein the base portion has a rim portion that has a generally planar cross-section; and

wherein the axial width of the crown portion is less than the axial width of the base portion.

2. The tire of claim 1, wherein the planar cross-section of the closed chamber is generally oval shaped.

3. The tire of claim 1, wherein the base portion comprises a rim surface portion, axially spaced annular rim seats, and axially spaced annular rim grooves.

4. The tire of claim 1, wherein the shoulder portions each have a large radius of curvature.

5. The tire of claim 4, wherein the radius of curvature of the shoulder portions range from about 36 degrees to about 44 with respect to a centerline across the cross-section of the tire parallel to the rim surface portion.

6. The tire of claim 2, wherein the shoulder portions each have a large radius of curvature.

7. The tire of claim 6, wherein the radius of curvature of the shoulder portions range from about 36 degrees to about 44 with respect to a centerline across the cross-section of the tire parallel to the rim surface portion.

8. The tire of claim 1, wherein at least a portion of the crown portion has a flat planar cross-section that is substantially parallel to the planar cross-section of the rim portion;

and

wherein the axial width of the crown portion is less than the axial width of the rim portion.

9. The tire of claim 5, wherein at least a portion of the crown portion has a flat planar cross-section that is substantially parallel to the planar cross-section of the rim portion;

and

wherein the axial width of the crown portion is less than the axial width of the rim portion.

10. The tire of claim 7, wherein at least a portion of the crown portion has a flat planar cross-section that is substantially parallel to the planar cross-section of the rim portion;

and

wherein the axial width of the crown portion is less than the axial width of the rim portion.

11. The tire of claim 1, wherein the axial width of the crown portion is 2 inches or less.

12. The tire of claim 1, wherein the axial width of the base portion is in the range from about 1 inch to about 5 inches.

13. The tire of claim 1, wherein the axial width of the tire at the widest portion is in the range from about 4 to about 8 inches.

14. The tire of claim 1, wherein the height of the tire in cross section from a rim surface portion to a crown surface portion is in the range of about 3.1 to about 5.1 inches.

15. The tire of claim 11, wherein at least 20% of the exterior surface of the crown portion in cross-section is flat.

16. The tire of claim 8, wherein at least 20% of the exterior surface of the crown portion in cross-section is flat.