Football having raised ribs
US5133550A · kind A · utility
67Cited by
1References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 24, 1991 |
| Grant date | Jul 28, 1992 |
| Priority date | — |
| Expiry date | Jul 24, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B2243/007
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A football-shaped game ball is formed of a resilient foam material and defines an oblate spheroidal outer surface having generally pointed ends. A plurality of rib portions extend outwardly from the outer surface and define nonsymmetrical cross-sections. In the preferred embodiment shown, the rib portions define generally saw-tooth shaped cross-sections which may be gripped in either of two gripping manners and which provide differing alternative aerodynamic characteristics depending upon the direction of spin imposed upon the football.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.