Serpentine ramp for a pinball game
US5938195A · kind A · utility
123Cited by
8References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 8, 1993 |
| Grant date | Aug 17, 1999 |
| Priority date | — |
| Expiry date | Dec 8, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63F7/027
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A serpentine ramp is rotatable about a horizontal axis between its center and its upper end to lift a pinball from a lower play surface to an upper play surface. A ball is directed from the lower surface into a ball receiving portion in the lower end of the ramp. This closes an optical switch causing the ramp to rotate between a receiving position and a discharge position. A ball disposed in the receiving portion rolls on the ramp to its upper end and then onto the upper surface. A second optical switch is closed by the return of the ramp to the receiving position which terminates the operation of the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.