Disk, displayed symbol identifier of mechanical slot machine, and mechanical slot machine
US7607979B2 · kind B2 · utility
0Cited by
8References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 20, 2005 |
| Grant date | Oct 27, 2009 |
| Priority date | — |
| Expiry date | Feb 8, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07F17/3216
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A disk for identifying individual symbols on a reel displayed in a symbol display region of a mechanical slot machine, the disk being concentric with the rotational axis of the reel and rotatable along with the reel, the disk surface being provided with a plurality of convex members protruding radially around the rotational axis, and the plurality of convex members each having at the top a detection surface whose distance from the rotational axis is within a unique range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.