US4261571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanical slot machine
Assignee: Individual
•
Filing: 1979-10-15
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Granted: 1981-04-14
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Expires: 1999-10-15
Abstract
Abstract A mechanical slot machine worked by springs, comprising rotatable drums bearing pictures, symbols, etc. on their peripheries, a kicker for rotating the drums, a movable frame for controlling drum stoppers and for detecting the stop positions of the drums to control discharging of coins, drum stoppers for stopping the drums in regular sequence and at regular intervals, and an actuating lever. Upon pulling the actuating lever forward once, the mechanism automatically rotates the drums for a period of time, stops them in regular sequence and at intervals, and discharges coins according to the combinations of pictures, symbols, etc. obtained.
Inventors
- 👤 Yoshie Ito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:02
CPC Classifications
G; G07; G07F; G07F17/00; G07F17/32; G07F17/34
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
218 words
A mechanical slot machine comprising: a plurality of drums rotatably mounted on a drum shaft, each of said drums having a notched disc with shallow notches and deep notches, a kicker and a movable frame both mounted on a supporting shaft disposed below the drum shaft, said kicker and movable frame both being always pulled in one direction by a respective spring, said kicker having projections for kicking the notched discs of the drums respectively, said movable frame having projections disposed for insertion into the notches of the notched discs of the drums respectively, and having a control portion for drum stoppers, said movable frame interlocking through a one-way clutch with a timing mechanism, an actuating lever and a hook adapted to turn therewith both mounted on one end of the supporting shaft, said hook disengageably engaging the kicker and the movable frame so as to disengage them when they have been turned by a certain angle against the force of the springs, and drum stoppers disposed for the drums respectively and always pulled toward the respective drums by springs, said drum stoppers having respective cam portions being different in shape from one another, said control portion of the movable frame abutting on the cam portions so as to let the drum stoppers engage and disengage the drums.
Claim 2
Dependent Claim
218 words
A mechanical slot machine comprising: a plurality of drums rotatably mounted on a drum shaft, each of said drums having a notched disc with shallow notches and deep notches, a kicker and a movable frame both mounted on a supporting shaft disposed below the drum shaft, said kicker and movable frame both being always pulled in one direction by a respective spring, said kicker having projections for kicking the notched discs of the drums respectively, said movable frame having projections disposed for insertion into the notches of the notched discs of the drums respectively, and having a control portion for drum stoppers, said movable frame interlocking through a one-way clutch with a timing mechanism, an actuating lever and a hook adapted to turn therewith both mounted on one end of the supporting shaft, said hook disengageably engaging the kicker and the movable frame so as to disengage them when they have been turned by a certain angle against the force of the springs, and drum stoppers disposed for the drums respectively and always pulled toward the respective drums by springs, said drum stoppers having respective cam portions being different in shape from one another, said control portion of the movable frame abutting on the cam portions so as to let the drum stoppers engage and disengage the drums.
Claim 3
Dependent Claim
55 words
A mechanical slot machine as claimed in claim 1, having a coin magazine and a latch normally supporting the bottom plate of the coin magazine so as to keep the bottom plate closed, said latch being adapted to be pushed by said control portion of the movable frame so as to open the bottom plate.
Claim 4
Dependent Claim
78 words
A mechanical slot machine as claimed in claim 1 or claim 2, having a supporting frame mounted on said supporting shaft and rigidly secured to said actuating lever, said hook being pivotally attached to the supporting frame and pulled in one direction by a spring, said hook being formed with a cam portion, and an inclined plane for turning said hook by contacting the cam portion thereof when the supporting frame has been turned by a certain angle.
Claim 5
Dependent Claim
60 words
A mechanical slot machine as claimed in claim 3, wherein said kicker is provided on its one side with a click engaging and disengaging the hook, said click being adapted to contact a portion of the movable frame so that, as the kicker is turned by means of the actuating lever, the movable frame is turned in the same direction.
Claim 6
Dependent Claim
96 words
A mechanical slot machine as claimed in claim 1, wherein said timing mechanism comprises a plurality of speedup gears and a flywheel at one end thereof, said one-way clutch comprising the first gear in the timing mechanism and a clutch plate, said gear being mounted on the supporting shaft, said clutch plate being mounted on the same shaft by the side of the said gear and interlocking with the movable frame, said gear and said clutch plate being provided on their contact surfaces with toothed surfaces adapted to engage with each other in one direction only.
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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) | 1984-04-13 | 1984-10-13 | 1985-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-13 | 1988-10-13 | 1989-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-13 | 1992-10-13 | 1993-04-14 | $7700.00 | Window Closed / Lapsed |