Tennis ball having a thermoplastic core
US11247103B2 · kind B2 · utility
1Cited by
56References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 11, 2020 |
| Grant date | Feb 15, 2022 |
| Priority date | — |
| Expiry date | Feb 17, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B2102/02
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A method for forming a tennis ball including the steps of providing a non-foamed thermoplastic core and providing a non-smooth textured surface on the core. The thermoplastic core including 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. The thermoplastic material having a thickness between 3.0 and 8.0 mm. The thickness of the thermoplastic material being 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.