Tennis ball having a thermoplastic core
US11192001B2 · kind B2 · utility
1Cited by
64References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 11, 2020 |
| Grant date | Dec 7, 2021 |
| Priority date | — |
| Expiry date | Feb 11, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F210/16
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A tennis ball including a non-foamed thermoplastic core defining an internal volume. The core includes a thermoplastic material having a specific gravity of 0.86 to 1.38, a flexural modulus of 2.0 to 50.0 MPa, and a Shore D hardness of 10 to 70. A thickness of the thermoplastic material is between 3.0 and 8.0 mm. The thickness of the thermoplastic material is configured to maintain dimensional stability at internal pressures of between zero and 15 psi.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.