Apparatus for evaluating ball pitching performance
US5230505A · kind A · utility
26Cited by
9References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 8, 1991 |
| Grant date | Jul 27, 1993 |
| Priority date | — |
| Expiry date | Nov 8, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B69/0002
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
There is disclosed an apparatus for monitoring and calculating the position and speed of a projectile as it is pitched over a target zone. A grid of infrared emitters aligned with respective infrared receivers are in continuous optical links until the ball passes an d cuts some of the links. Upon this cut, the position of the ball is stored in memory and the time of passage of the ball across the grid is recorded to later calculate the speed of the ball. The infrared grid is enclosed in a chamber to prevent interference of external light rays with the reception of the receivers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.