US4773647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slot machine with stop switch enablement after attainment of minimum reel speed
Assignee: Universal Entertainment Corp
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Filing: 1984-08-02
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Granted: 1988-09-27
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Expires: 2004-08-02
Abstract
Abstract A slot machine of the type having a plurality of reels and pulse motors for rotating the respective reels wherein the pulse motors can be stopped individually by touching stop switches provided one for each of the respective reels. Every stop switch is provided with a light-emitting indicator for indicating that the stop switch is operable, and the stop switch becomes operable only when its corresponding pulse motor, and hence the associated reel, has reached a predetermined speed of rotation. In this way, the display of selected symbols cannot be controlled by the player stopping the reels during an initial phase of their movement when they are turning only very slowly.
Inventors
- 👤 Kazuo Okada
- 👤 Toshio Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:46
CPC Classifications
G; G07; G07F; G07F17/00; G07F17/32; G07F17/34
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
102 words
A slot machine of the type having a plurality of reels driven by pulse motors associated therewith, comprising a plurality of stop switches provided one for each of the respective reels for generating stop signals, each said stop switch comprising a sensor switch which is turned on by touching with a finger, each said stop switch having a light emitting means therein, said light emitting means being illuminated only when said stop switch is operable, and means rendering said stop switches operable only after said reels have attained a predetermined speed of rotation and are rotating at said predetermined speed of rotation.
Claim 2
Dependent Claim
102 words
A slot machine of the type having a plurality of reels driven by pulse motors associated therewith, comprising a plurality of stop switches provided one for each of the respective reels for generating stop signals, each said stop switch comprising a sensor switch which is turned on by touching with a finger, each said stop switch having a light emitting means therein, said light emitting means being illuminated only when said stop switch is operable, and means rendering said stop switches operable only after said reels have attained a predetermined speed of rotation and are rotating at said predetermined speed of rotation.
Claim 3
Dependent Claim
39 words
A slot machine as defined in claim 1, wherein said stop switch has a cylindrical wall with a hole therein and a holder of insulating material with said light-emitting means attached to one end thereof disposed in said hole.
Claim 4
Dependent Claim
18 words
A slot machine as defined in claim 2, wherein said light-emitting means is a light emitting diode (LED).
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-09-27 | 1992-03-28 | 1992-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-27 | 1996-03-28 | 1996-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-27 | 2000-03-28 | 2000-09-27 | $7700.00 | Window Closed / Lapsed |