Inflatable game ball

• US 4,333,648 A
• Filed: 01/25/1980
• Issued: 06/08/1982
• Est. Priority Date: 02/06/1979
• Status: Expired due to Term

• Current Assignee: Molten Rubber Industry Company Limited
• Original Assignee: Molten Rubber Industry Company Limited
• Inventors: Aoyama, Masayoshi
• Primary Examiner(s): Marlo, George J.
• Application Number:
  US06/115,224
• Time in Patent Office: 865 Days
• Field of Search: 273/65 EB, 273/65 E, 273/58 B, 273/58 BA, 273/DIG. 8, 156/170
• US Class Current: 473/604
• CPC Class Codes: A63B 2243/0025 Football American football A63B2243/007
• CPC Class Codes: A63B 41/10 Bladder and cover united
• CPC Class Codes: Y10S 273/08 Urethane

Abstract

In order to improve a touch, this invention provides a ball of the inflatable type comprising a rubber tube used as a ball substrate which is introduced with gas under pressure therewithin, a reinforcing winding layer formed by simultaneously winding the combination of a nylon thread and either an elastic rubber or urethane elastomer thread around the outer periphery of the rubber tube, and a surface cover layer made of a natural or synthetic leather stock which covers the reinforcing winding layer therewith through an adhesive with or without interposing an intermediate rubber layer formed by molding and vulcanization on the peripheral surface of the reinforcing winding layer.

Claims

1. A ball of the inflatable type consisting essentially of a hollow rubber tube used as a ball substrate which is inflated with a gas under pressure, a reinforcing thread winding layer formed by winding a reinforcing nylon filament thread and a rubber thread simultaneously with each other along the outer periphery of said rubber tube, and a surface cover layer covering said reinforcing thread winding layer therewith through an adhesive, said surface cover layer being made of a natural or synthetic leather stock.

2. A ball of the inflatable type consisting essentially of a hollow rubber tube used as a ball substrate which is inflated with gas under pressure, a reinforcing thread winding layer formed by winding a reinforcing nylon filament thread and a rubber thread simultaneously with each other along the outer periphery of the rubber tube, an intermediate rubber layer formed on the surface of said reinforcing thread winding layer by molding and vulcanization, and a surface cover layer bonded to the entire surface of said intermediate rubber layer through an adhesive layer, said surface cover layer being made of a natural or synthetic leather stock.

3. A ball of the inflatable type consisting essentially of a hollow rubber tube used as a ball substrate which is inflated with a gas under pressure, a reinforcing thread winding layer formed by winding a reinforcing nylon filament thread and an urethane elastomer thread simultaneously with each other along the outer periphery of said rubber tube, and a surface cover layer covering said reinforcing thread winding layer therewith through an adhesive, said surface cover layer being made of a natural or synthetic leather stock.

4. A ball of the inflatable type consisting essentially of a hollow rubber tube used as a ball substrate which is inflated with a gas under pressure, a reinforcing thread winding layer formed by winding a reinforcing nylon filament thread and an urethane elastomer thread simultaneously with each other along the outer periphery of said rubber tube, an intermediate rubber layer formed on the surface of said reinforcing thread winding layer by molding and vulcanization, and a surface cover layer bonded to the entire surface of said intermediate rubber layer through an adhesive layer, said surface cover layer being made of a natural or synthetic leather stock.