Baseball with improved core and enhanced durability
US8771114B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 6, 2011 |
| Grant date | Jul 8, 2014 |
| Priority date | — |
| Expiry date | Jul 6, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L75/04
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A baseball capable of being tested under ASTM F1887-09 wherein the baseball is projected at a strike plate at a speed of approximately 60 mph to measure the COR of the baseball. The baseball includes a core formed of a diene-based rubber composition, at least one layer of yarn surrounding the core, and a cover assembly surrounding the one layer of yarn. The core has a diameter of less than 2.0 inches and a weight less than 1.5 ounces. The baseball has a circumference of less than 9.5 inches and a weight of less than 5.5 ounces. The baseball has an initial COR value when tested in accordance with ASTM F1887-09 and a second COR value measured after the baseball has undergone at least 60 impacts of approximately 60 mph against the strike plate. The second COR value is greater than 95 percent of the initial COR value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.