Ball accelerator for rolling ball games
US5158291A · kind A · utility
11Cited by
5References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 21, 1992 |
| Grant date | Oct 27, 1992 |
| Priority date | — |
| Expiry date | Jan 21, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63F2007/0094
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A ball accelerator mechanism employs one or more electromagnetic coils in combination with sensor elements to accelerate a rolling ball made of ferro-magnetic material. As a ball approaches the coil, it operates the sensor applying a DC current pulse to the coil. As the ball enters the coil, it is magnetically accelerated until it clears the sensor at which time the current is turned off. The length of the current pulse is thus a function of ball velocity. Preferably to maximize acceleration, the width of the coil is an integral multiple of the ball diameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.