Golf ball with soft core
US5971870A · kind A · utility
Inventors
Key dates
| Filing date | Nov 21, 1997 |
| Grant date | Oct 26, 1999 |
| Priority date | — |
| Expiry date | Nov 21, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B37/0088
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
Disclosed herein is a golf ball with a solid core having a PGA compression of 55 or less and an outer cover layer having a Shore D hardness of at least 60, the ball having a PGA compression of 80 or less. In another embodiment of the invention, the ball has a mechanical impedance with a primary minimum value in a frequency range of 3100 Hz or less after the ball has been maintained at 21.1.degree. C., 1 atm. and about 50% relative humidity for at least 15 hours. A further embodiment of the invention is a golf ball having a core, and a cover with a Shore D hardness of at least 58, the ball having a mechanical impedance with a primary minimum value in the frequency range of 2600 Hz after the ball has been maintained at 21.1.degree. C., 1 atm. and about 50% relative humidity for at least 15 hours. The balls of the invention have good distance while providing a soft sound and feel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.