Practice baseball
US5788591A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 26, 1994 |
| Grant date | Aug 4, 1998 |
| Priority date | — |
| Expiry date | Jan 26, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B2102/18
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A practice baseball having a circumference in the range of approximately 65% to 90% of the circumference of an official league baseball and having a weight in the range of approximately 70% to 85% of the weight of an official baseball as required for use in league games by Rule 1.09 of the Official Baseball Rules. Use of the smaller and lighter practice baseball for batting practice should improve the batting skills of a player due to the greater difficulty of hitting the smaller practice baseball. The practice baseball has the same durability and resiliency as an official baseball because it is constructed in a similar manner. The resiliency of the practice baseball is achieved by wrapping the core of the baseball with materials of a tension sufficient to provide a proper coefficient of restitution, one that is similar to the coefficient of restitution of an official baseball.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.