BALLASTED VEHICLE TIRE AND SELF-SEALING THIXOTROPIC BALLAST COMPOSITION THEREFOR

• US 3,747,660 A
• Filed: 10/04/1971
• Issued: 07/24/1973
• Est. Priority Date: 10/04/1971
• Status: Expired due to Term

• Current Assignee: Donald H. Tibbals
• Original Assignee: Donald H. Tibbals
• Inventors: Tibbals, Donald H.
• Primary Examiner(s): Marbert, James B.
• Application Number:
  US05/186,521
• Time in Patent Office: 659 Days
• Field of Search: 152/330
• US Class Current: 152/504
• CPC Class Codes: B29C 73/163 Sealing compositions or agents, e.g. combined with propellant agents
• CPC Class Codes: B29D 2030/0698 the sealant being applied by injection, e.g. introducing the sealant through a hole
• CPC Class Codes: B29D 30/0685 Incorporating auto-repairing or self-sealing arrangements or agents on or into tyres auto-repairing or self-sealing arrangements or agents B29C73/16; puncture preventing arrangements B60C19/12
• CPC Class Codes: B29L 2030/00 Pneumatic or solid tyres or parts thereof conveyor belts B29L2031/7092; drive belts B29L2031/7094; fourdrinier belts B29L2031/733
• CPC Class Codes: B60C 5/005 Ballast tyres
• CPC Class Codes: Y10T 152/10684 On inner surface of tubeless tire

Abstract

Vehicle tire at least partially filled with leak-sealing, tire ballast composition in the form of an aqueous, thixotropic mixture consisting essentially of a gel-forming clay, and an alkali metal hexametaphosphate.

Claims

2. A ballasted vehicle tire as described in claim 1, wherein said ballast material additionally includes a minor amount of a water-soluble salt of boric acid.

3. A ballasted vehicle tire as described in claim 2, wherein said water-soluble salt is an alkali metal salt of boric acid.

4. A ballasted vehicle tire as described in claim 3, wherein said boric acid salt is sodium tetraborate.

5. A ballasted vehicle tire as described in claim 1, wherein said alkaline metal hexametaphosphate is sodium hexametaphosphate.

6. A ballasted vehicle tire as described in claim 1, wherein said ballast material is composed of between about 5 and about 35 percent by weight of said clay and between about 10 and about 40 percent by weight of said sand.

7. A ballasted vehicle tire as described in claim 1, wherein said ballast material additionally includes a liquid antifreeze material.

8. A ballasted vehicle tire as described in claim 1, wherein said tire is substantially completely filled to capacity with said ballast material.

9. A leak-sealing tire ballast composition which comprises an aqueous, thixotropic mixture consisting essentially of between about 5 and about 35 percent of a gel-forming clay, between about 10 and about 40 percent sand, and between about 0.005 and about 0.01 percent sodium hexametaphosphate.

10. A tire ballast composition as defined in claim 9, wherein said mixture additionally contains a rust inhibiting amount of a water-soluble salt of boric acid.

11. A tire ballast composition as defined in claim 10, wherein said boric acid salt is borax.

12. A ballasted vehicle tire as described in claim 3, wherein said ballast material has a viscosity of between about 140 and about 260 centipoises, when measured at 70* F.

13. A tire ballast composition as defined in claim 9, wherein said composition contains between about 25 and about 35 percent by weight water.

14. A tire ballast composition as defined in claim 9, wherein said ballast composition has a viscosity of between about 140 and about 260 centipoises when measured at 70* F.