Claims
- 1. A golf ball comprising:a solid core having a PGA compression of 80 or less, the core including (i) a first polybutadiene rubber obtained utilizing a cobalt catalyst and having a Mooney viscosity in the range of from about 70 to about 83, and (ii) a blend of polybutadiene rubbers wherein each is obtained by utilizing a neodymium series catalyst and having a Mooney viscosity of from about 30 to about 70; and a cover disposed about said core, the cover having a Shore D hardness of 55 or less; wherein said ball has a PGA compression of 80 or less and a coefficient of restitution of at least 0.800.
- 2. The golf ball of claim 1 wherein said first polybutadiene rubber includes at least 90% cis-1,4 polybutadiene.
- 3. The golf ball of claim 1 wherein said core composition comprises one or more high molecular weight polybutadienes.
- 4. The golf ball of claim 1 wherein said cover has a thickness of 0.063±0.005 inches.
- 5. The golf ball of claim 1 wherein said ball has a PGA compression of 70 or less.
- 6. The golf ball of claim 1 wherein said blend of polybutadiene rubbers comprises a first polybutadiene having a Mooney viscosity of about 40 and a second polybutadiene having a Mooney viscosity of about 60.
- 7. The golf ball of claim 1 wherein said first polybutadiene rubber is present in an amount of about 40% by weight of the rubber composition of the core.
- 8. The golf ball of claim 1 wherein said ball has a coefficient of restitution of 0.805±0.005.
- 9. The golf ball of claim 1 wherein said blend of polybutadiene rubbers is comprised of about 30% by weight of a first polybutadiene having a Mooney viscosity of about 40 and about 30% by weight of a second polybutadiene having a Mooney viscosity of about 60.
- 10. The golf ball of claim 1 wherein the ball has a Shore D cover hardness of 53 or less.
- 11. The golf ball of claim 1 wherein the ball is further treated with gamma radiation.
- 12. The golf ball of claim 1 wherein the cover is comprised of an ionomer resin or a blend of ionomer resins.
- 13. The golf ball of claim 1 wherein the PGA compression of the ball is less than the PGA compression of the core.
- 14. The golf ball of claim 1 wherein said core further comprises a heavy weight filler.
- 15. The golf ball of claim 14 wherein the heavy weight filler is selected from tungsten, brass and bronze powder.
- 16. A two-piece golf ball comprising:a solid core having a diameter of 1.552 inches or more, a PGA compression of 80 or less, and a coefficient of restitution of 0.800 or more; and, a cover layer having a Shore D hardness measured on the ball of 55 or less; the ball having a PGA compression of 80 or less and a coefficient of restitution of 0.800 or more.
- 17. The golf ball of claim 16, wherein the ball is treated with gamma radiation to increase the coefficient of restitution of the ball.
- 18. The golf ball of claim 16, wherein the PGA compression of the ball is the same or lower than the PGA compression of the core.
- 19. A two-piece, high spinning golf ball comprisinga solid core having a diameter of 1.560±0.005 inches, a PGA compression of 80 or less and a coefficient of restitution of 0.805±0.008; wherein said core comprises one or more high molecular weight polybutadienes; and a cover layer having a thickness of 0.063″±0.005 and a Shore D hardness of 53±2, wherein said cover comprises one or more ionomeric resins, wherein the ball has a PGA compression of 80 or less and a coefficient of restitution of 0.805±0.008.
- 20. The golf ball of claim 19, wherein the ball has a 422 tri dimple pattern.
CROSS REFERENCE TO RELATED APPLICATIONS
This application claims the benefit of the filing date of U.S. Provisional Application Nos. 60/217,900 and 60/218,572, both filed on Jul. 13, 2000.
US Referenced Citations (12)
Number |
Name |
Date |
Kind |
4431193 |
Nesbitt |
Feb 1984 |
A |
4683257 |
Kakiuchi et al. |
Jul 1987 |
A |
4984804 |
Yamada et al. |
Jan 1991 |
A |
5857925 |
Sullivan et al. |
Jan 1999 |
A |
6126559 |
Sullivan et al. |
Oct 2000 |
A |
6142886 |
Sullivan et al. |
Nov 2000 |
A |
6152835 |
Sullivan et al. |
Nov 2000 |
A |
6245858 |
Sullivan et al. |
Jun 2001 |
B1 |
6271316 |
Sullivan et al. |
Aug 2001 |
B1 |
6350793 |
Kennedy et al. |
Feb 2002 |
B1 |
6368236 |
Sullivan et al. |
Apr 2002 |
B1 |
6394913 |
Nesbitt et al. |
May 2002 |
B1 |
Provisional Applications (2)
|
Number |
Date |
Country |
|
60/217900 |
Jul 2000 |
US |
|
60/218572 |
Jul 2000 |
US |