Composite bladder for game balls

• US 5,096,756 A
• Filed: 04/02/1990
• Issued: 03/17/1992
• Est. Priority Date: 04/02/1990
• Status: Expired due to Term

• Current Assignee: Wilson Sporting Goods Company (Anta International Group Holdings Ltd.)
• Original Assignee: Wilson Sporting Goods Company (Anta International Group Holdings Ltd.)
• Inventors: Walters, Peter J.
• Primary Examiner(s): Robinson, Ellis P.
• Assistant Examiner(s): DYE, RENA
• Application Number:
  US07/502,798
• Time in Patent Office: 715 Days
• Field of Search: 428/35.4, 428/35.5, 428/36.6, 273/65 A, 273/65 B, 273/65 E, 273/65 ED, 273/DIG. 5, 273/DIG. 8, 525/123, 525/131
• US Class Current: 428/35.5
• CPC Class Codes: A63B 41/02 Bladders
• CPC Class Codes: C08L 2666/14 Macromolecular compounds according to C08L59/00 - C08L87/00; Derivatives thereof
• CPC Class Codes: C08L 27/04 containing chlorine atoms
• CPC Class Codes: C08L 27/06 Homopolymers or copolymers of vinyl chloride
• CPC Class Codes: C08L 75/04 Polyurethanes
• CPC Class Codes: Y10S 273/05 Vinyl
• CPC Class Codes: Y10S 273/06 Nylon
• CPC Class Codes: Y10T 428/1341 Contains vapor or gas barrier, polymer derived from vinyl chloride or vinylidene chloride, or polymer containing a vinyl alcohol unit
• CPC Class Codes: Y10T 428/1345 Single layer [continuous layer]
• CPC Class Codes: Y10T 428/1379 Contains vapor or gas barrier, polymer derived from vinyl chloride or vinylidene chloride, or polymer containing a vinyl alcohol unit

Abstract

A bladder for a game ball is formed from a composite film which is made from a mixture of polyurethane and polyvinylchloride.

Claims

1. An inflatable bladder for a game ball, the bladder comprising a composite single ply film formed from a mixture of thermoplastic polyester polyurethane and polyvinylchloride.

2. The bladder of claim 1 in which the thickness of the film is within the range of 0.004-0.020 inch.

3. The bladder of claim 1 in which said mixture contains from about 55 to 65 percent by weight of polyurethane and from about 35 to 45 percent by weight of polyvinylchloride.

4. The bladder of claim 3 in which the density of the polyurethane is within the range of 1.20-1.23 gr/cm³ and the density of the polyvinylchloride is within the range of 1.29-1.35 gr/cm³.

5. An inflatable bladder for a game ball, the bladder comprising a pair of bladder portions which are sealed together around their peripheries, each of the bladder portions comprising a composite single ply film formed from a mixture of thermoplastic polyester polyurethane and polyvinylchloride.