Magnetic ball lock for a pinball game
US5415403A · kind A · utility
121Cited by
5References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 16, 1994 |
| Grant date | May 16, 1995 |
| Priority date | — |
| Expiry date | Jun 16, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63F2009/2444
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
The play feature of the invention comprises a ball well and electromagnetic coil. A ball sensor is located near the well entrance to signal when a ball is detected. The electromagnet, disposed at the well entrance, attracts the ball from the playfield into the well where it is retained. To eject the ball, the magnet is reenergized and the ball is ejected form the well onto the playfield.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.