Tennis ball with fabric covering
US4439471A · kind A · utility
8Cited by
1References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 14, 1980 |
| Grant date | Mar 27, 1984 |
| Priority date | — |
| Expiry date | Oct 14, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2395
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A tennis ball conforming to the 1968 regulation of the International Federation of Lawn Tennis comprises a hollow elastic core and an improved cover bonded to the core by an adhesive mixture. The cover has a specific weight less than 0.22 g/cm.sup.3 and includes a proportion of relatively thick monofilament fibers such that the percentage-weighted average denier size of all fibers in the cover is at least 18. The cover improves the playing characteristics and the effective life of the ball.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.