Tennis training aids
US9623312B2 · kind B2 · utility
2Cited by
18References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 22, 2014 |
| Grant date | Apr 18, 2017 |
| Priority date | — |
| Expiry date | Jan 22, 2034 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B2225/093
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A tennis teaching aid comprises a stand and a ball (10) and a guide (12) mounted on the stand for rotation about an axis. The guide (12) extends around the ball (10) and defines a planar guide plane that is parallel to but spaced from a required path of a tennis racquet to hit the ball (10) with topspin. The majority of the ball (10) projects above the guide plane for contact with a tennis racquet so that a correct contact with the ball (10) is achieved when the racquet moves parallel to, but not in contact with, the guide (12) and the ball (10) is spinning about its rotational axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.