Electronic method of locating a football
US4675816A · kind A · utility
22Cited by
2References
7Claims
0Family size
Inventors
Key dates
| Filing date | Aug 26, 1985 |
| Grant date | Jun 23, 1987 |
| Priority date | — |
| Expiry date | Aug 26, 2005 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B2243/0025
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
An electronic method is used to determine the location of a football on a playing field using a radio transmitter which is positioned at the end of the football and energized to send signals to dispersed receiving rotating antennas which automatically become positioned to point toward the transmitter and then provide via triangulating methods, signals to a computer that determines and transmits the actual location of the football to selected receivers on or off the football field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.