US4091437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Free play apparatus for coin operated amusement devices
Assignee: Individual
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Filing: 1976-10-12
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Granted: 1978-05-23
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Expires: 1996-10-12
Abstract
Abstract Apparatus is disclosed which automatically times non-play time for coin operated amusement devices and provides a predetermined period when the device may be actuated to provide a free play.
Inventors
- 👤 Walter Soroka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:41
CPC Classifications
G; G07; G07F; G07F17/00; G07F17/32; G07F17/3244
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
168 words
Apparatus for providing a free play in a coin operated device, comprising, in combination: sensing means for sensing a current in the coin operated device for determining when the coin operated device is in use; first timing means responsive to the sensing means for timing a first predetermined time period; a multivibrator having a first stable state and a second stable state, and responsive to the sensing means, to the switch means, and to a second timing means to cause the multivibrator to go to its first stable state, and responsive to the first timing means to cause the multivibrator to go to its second stable state; second timing means responsive to the multivibrator for timing a second predetermined time period after the first predetermined time period; switch means actuable during the second predetermined time period for selecting a free play in the coin operated device; and voltage means to provide a source of current for the first timing means, the second timing means, and the switch means.
Claim 2
Dependent Claim
168 words
Apparatus for providing a free play in a coin operated device, comprising, in combination: sensing means for sensing a current in the coin operated device for determining when the coin operated device is in use; first timing means responsive to the sensing means for timing a first predetermined time period; a multivibrator having a first stable state and a second stable state, and responsive to the sensing means, to the switch means, and to a second timing means to cause the multivibrator to go to its first stable state, and responsive to the first timing means to cause the multivibrator to go to its second stable state; second timing means responsive to the multivibrator for timing a second predetermined time period after the first predetermined time period; switch means actuable during the second predetermined time period for selecting a free play in the coin operated device; and voltage means to provide a source of current for the first timing means, the second timing means, and the switch means.
Claim 3
Dependent Claim
50 words
The apparatus of claim 1 in which the first timing means includes a first transistor turned off from a conducting state when no current is sensed by the sensing means, and a capacitor connected to the first transistor to charge to a predetermined voltage when the first transistor turns off.
Claim 4
Dependent Claim
50 words
The apparatus of claim 2 in which the second timing means includes a first relay actuable in response to the multivibrator going to its second stable state, and a second capacitor connected to the multivibrator to charge to a predetermined voltage when the multivibrator goes to its second stable state.
Claim 5
Dependent Claim
46 words
The apparatus of claim 3 in which the first timing means further includes a first zener diode connected to the first capacitor and to the multivibrator to cause the multivibrator to change to its second stable state when the first capacitor charges to a predetermined voltage.
Claim 6
Dependent Claim
46 words
The apparatus of claim 4 in which the second timing means further includes a second zener diode connected to the second capacitor and to the multivibrator to cause the multivibrator to change to its first stable state when the second capacitor charges to a predetermined voltage.
Claim 7
Dependent Claim
38 words
The apparatus of claim 5 in which the switch means includes a second relay actuable in response to actuation of the switch during the second time period to cause the multivibrator to go to its first stable state.
Claim 8
Dependent Claim
39 words
The apparatus of claim 6 in which the second timing means includes a switch connected to the multivibrator to cause the multivibrator to change from its first stable state to its second stable state during the first time period.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-22 | 1981-11-21 | 1982-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-22 | 1985-11-21 | 1986-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-22 | 1989-11-21 | 1990-05-23 | $7700.00 | Window Closed / Lapsed |