Slot machine
US5024439A · kind A · utility
118Cited by
5References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 21, 1990 |
| Grant date | Jun 18, 1991 |
| Priority date | — |
| Expiry date | Aug 21, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07F17/34
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Whether or not a game of a slot machine can result in a hit is determined before the symbol series stop moving, and preferably when a start lever is manipulated for starting the motion of the symbol series. For a game that can be a hit, the speed of movement of the symbol series is switched from a high speed to a low speed, or the speed is set at a low speed from the outset. For a game that cannot be a hit, the symbol series move at a high speed from the outset. From the difference between the speeds of movement, a player can know whether the game can be a hit even while the game is still in progress.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.