Sealing composition for inflatable articles containing gas under pressure

• US 4,776,888 A
• Filed: 08/28/1987
• Issued: 10/11/1988
• Est. Priority Date: 08/28/1987
• Status: Expired due to Term

• Current Assignee: Kor-Chem, Inc.
• Original Assignee: Raymond V. Morrow
• Inventors: Morrow, Raymond V.
• Primary Examiner(s): Morris, Theodore
• Application Number:
  US07/091,063
• Time in Patent Office: 410 Days
• Field of Search: 106/33, 252/72, 152/504
• US Class Current: 106/33
• CPC Class Codes: B29C 73/163 Sealing compositions or agents, e.g. combined with propellant agents
• CPC Class Codes: B29K 2069/00 Use of PC, i.e. polycarbonates or derivatives thereof, as moulding material
• CPC Class Codes: B29K 2105/0058 Liquid or visquous
• CPC Class Codes: B29K 2105/251 Particles, powder or granules expandable particles B29K2105/046
• CPC Class Codes: B29K 2311/10 Natural fibres, e.g. wool or cotton
• CPC Class Codes: B29K 2423/06 PE, i.e. polyethylene
• CPC Class Codes: B29L 2022/02 Inflatable articles balls B29L2031/54 ; inner tyres B29L2023/245
• CPC Class Codes: B29L 2023/245 Inner tubes
• CPC Class Codes: B29L 2031/545 Football balls
• CPC Class Codes: Y10T 152/10684 On inner surface of tubeless tire

Abstract

A sealing system and sealing composition are provided for inflatable articles containing air under pressure. The sealing composition includes particles or particulates of shapes having sharp corners thereon which tend to dig into the article around the opening and wedge themselves therein. The sealing composition also includes fibers, at least some of which are fibrillated. The fibers tend to wrap around the particles and further plug the leak opening. The particles and the fibers are in a liquid carrier which also tends to form a bond of the particles and fibers in the leak opening. The particles in the composition are of particular ranges of sizes for different articles, the larger particles being used in larger articles, such as large tires for construction machines, for example.

Claims

1. A sealing composition for sealing a leak opening in an inflatable article containing air under pressure, said composition comprising a multiplicity of triangular particles each having shapes with a plurality sharp corners thereon, a multiplicity of fibers, and a liquid carrier, said particles being of a size to block the leak opening, said fibers being wrapped on the particles in the leak opening, and said liquid forming a binder to bind the particles and fibers at the opening.

2. A sealing composition for inflatable articles containing gas under pressure, said composition comprising a multiplicity of particles of polyethylene or polycarbonate, said particles being of triangular shapes having sharp corners thereon, said particles being present in an amount of two to four parts, by weight, and in a size from eight to twenty-mesh, as measured by Tyler screen sizes, a multiplicity of fibrillated fibers in lengths from one and one-half to three millimeters and being present in an amount of ten to twelve parts, by weight, and a carrier comprising ethylene glycol, gums, adhesives, corrosion and rust inhibitors, anti-oxidant agents and anti-bacterial agents, being present in an amount from eighty-four to eighty-eight parts, by weight.

3. A sealing composition for inflatable articles containing gas under pressure, said composition comprising a multiplicity of particles of triangular plastic material, said particles being of shapes each having a plurality of sharp corners thereon, said particles being present in an amount of one to ten parts, by weight, and in a size from eight to twenty-mesh, as measure by Tyler screen sizes, a multiplicity of fibrillated fibers in lengths from one-half to six millimeters, and being present in an amount of six to sixteen parts, by weight, and a carrier comprising ethylene glycol, gums, adhesives, corrosion and rust inhibitors, in an amount of eighty to ninety-two parts, by weight.

4. A sealing composition according to claim 3 for use with inflatable articles such as basketballs, football, soccerballs, and bicycle tires, most of said particles being present in a size from eighteen to twenty-mesh, as measured by Tyler screen sizes.

5. A sealing composition according to claim 3 to inflatable articles such as large tires for construction machines and over-the-road and mining machines, most of said particles being present in a size from eight to ten-mesh, as measured by Tyler screen sizes.