Golf ball

• US 5,482,286 A
• Filed: 01/25/1993
• Issued: 01/09/1996
• Est. Priority Date: 11/27/1991
• Status: Expired due to Term

• Current Assignee: Callaway Golf Company (Topgolf Callaway Brands Corp.)
• Original Assignee: Lisco Incorporated
• Inventors: Nesbitt, R. Dennis, Melvin, Terence, Stiefel, Joseph F., Molitor, Robert P.
• Primary Examiner(s): Marlo, George J.
• Application Number:
  US08/008,118
• Time in Patent Office: 1,079 Days
• Field of Search: 273/235 R, 273/62, 273/220, 273/230, 273/232, 273/233, 273/235 R, 273/235 B, 273/DIG. 20
• US Class Current: 473/372
• CPC Class Codes: A63B 37/0003 Golf balls
• CPC Class Codes: A63B 37/0004 Surface depressions or protrusions
• CPC Class Codes: A63B 37/0019 Specified dimple depth
• CPC Class Codes: A63B 37/002 Specified dimple diameter
• CPC Class Codes: A63B 37/008 Diameter
• CPC Class Codes: Y10S 273/20 Weighted balls
• CPC Class Codes: Y10S 273/22 Ionomer

Abstract

A golf ball of improved playing characteristics weighing no more than 1.62 ounces and having a mean outside diameter of at least 1.70 inches. A dimple pattern on the surface of the ball may include a plurality of dimples which have different diameters. The dimples cover at least 70% of the surface of the ball. A core and cover are used which provide a finished ball having a coefficient of restitution between 0.790 and 0.830.

Claims

1. A golf ball of improved playing characteristics comprising

a ball having a mean outside diameter of substantially between 1.70 and 1.80 inches;

and

a dimple pattern comprising a plurality of dimples on the surface of said ball, said dimple pattern covering at least 70.0% of the surface of said ball;

said ball having a coefficient of restitution between 0.790 and 0.830.

2. The golf ball of claim 1 wherein said dimple pattern has dimples of at least two different diameters.

3. The golf ball of claim 1 wherein said ball has a weight no greater than 1.62 ounces.

4. The golf ball of claim 1 further comprising a cover and a core, the core of said ball comprising polybutadiene.

5. The golf ball of claim 4 wherein said cover comprises polybutadiene, zinc diacrylate, and zinc stearate.

6. The golf ball of claim 1 further comprising a hard polymer cover surrounding a core comprising linked polybutadiene, zinc diacrylate and zinc stearate.

7. The golf ball of claim 1 further comprising a hard polymer cover surrounding a core comprising crosslinked polybutadiene and zinc diacrylate, the hard polymer cover having a hardness of from about 69 to about 73 Shore D.

8. The golf ball of claim 1 further comprising a hard polymer cover surrounding a core, said cover comprising an ionomer resin having from about 69 to about 73 Shore D hardness.

9. The golf ball of claim 1 further comprising a cover surrounding a core, said core comprising crosslinked polybutadiene with a metal diacrylate.

10. The golf ball of claim 1 further comprising a cover surrounding a core, said core formed by a mixture comprising 100 parts by weight polybutadiene, 21 parts by weight of a metal diacrylate, 20 parts by weight ground flash, 6 parts by weight zinc oxide, 4.5 parts by weight calcium carbonate, 15 parts by weight zinc stearate, and 1.5 parts by weight peroxide, said cover formed by a mixture comprising about 97.5 parts by weight of at least one ionomer resin, about 2.25 parts by weight titanium dioxide, about 0.1 parts by weight optical brightener, about 0.02 parts by weight ultramarine blue, and about 0.004 parts by weight Santonox R.