US3738468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coin checking device
Assignee: Individual
•
Filing: 1972-04-20
•
Granted: 1973-06-12
•
Expires: 1992-04-20
Abstract
Abstract An electronic coin checking device comprising at least one window circuit for checking coin-characteristic measurement signal values caused by the movement of coins past a measuring location, wherein the window circuit arrangement possesses two window boundary circuits delimiting a window region, at least one of which window boundary circuit is constructed as an amplifier in such a manner that a portion of a measurement signal value penetrating into the window region is amplified.
Inventors
- 👤 M Prumm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:53
CPC Classifications
G; G07; G07D; G07D5/00; G07D5/08
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
74 words
An electronic coin checking device comprising at least one window circuit arrangement for checking coin-characteristic measurement signal values caused by the movement of coins past a measurement location, said window circuit arrangement comprising two window boundary circuits defining a window region, at least one of such window boundary circuits being constructed as an amplifier means in such a manner that a portion of the measurement signal value penetrating into the window region is amplified.
Claim 2
Dependent Claim
74 words
An electronic coin checking device comprising at least one window circuit arrangement for checking coin-characteristic measurement signal values caused by the movement of coins past a measurement location, said window circuit arrangement comprising two window boundary circuits defining a window region, at least one of such window boundary circuits being constructed as an amplifier means in such a manner that a portion of the measurement signal value penetrating into the window region is amplified.
Claim 3
Dependent Claim
36 words
The coin checking device as defined in claim 1, wherein said amplifier means comprises a transistor and wherein there is utilized the amplification of the transistor in the region between saturation and blocking or vice versa.
Claim 4
Dependent Claim
29 words
The coin checking device as defined in claim 1, wherein the amplification of the window boundary circuit is brought about by said amplifier means designed as a comparator circuit.
Claim 5
Dependent Claim
22 words
The coin checking device as defined in claim 1, wherein said amplifier means of said window boundary circuit comprises an operational amplifier.
Claim 6
Dependent Claim
30 words
The coin checking device as defined in claim 1, wherein the other window boundary circuit when activated directly or indirectly eliminates the action of the first amplifying window boundary circuit.
Claim 7
Dependent Claim
24 words
The coin checking device as defined in claim 1, further including means for delivering the actual measurement signal value to both window boundary circuits.
Claim 8
Dependent Claim
47 words
The coin checking device as defined in claim 1, further including means for delivering the actual measurement signal value to only one of the amplifying window boundary circuits and wherein the second window boundary circuit evaluates the amplified analogue signal amplified by the first window boundary circuit.
Claim 9
Dependent Claim
63 words
The coin checking device as defined in claim 6, wherein with the presence of a number of measurement regions corresponding to different coin acceptance regions there is set a different gain of the window boundary circuit constructed as amplifier means and therefore there is brought about a standardized stroke of the output signal of one of each measurement range notwithstanding different window widths.
Claim 10
Dependent Claim
63 words
The coin checking device as defined in claim 7, wherein with the presence of a number of measurement regions corresponding to different coin acceptance regions there is set a different amplification of the window boundary circuit constructed as amplifier means and therefore there is brought about a standardized stroke of the output signal of one of each measurement range notwithstanding different window widths.
Claim 11
Dependent Claim
58 words
The coin checking device as defined in claim 1, wherein the boundary voltage for the lower window boundary circuit, and upon presence of a number of window circuits the common boundary voltage, is used as a reference voltage for the null point-and/or terminal deflection compensation of an adjustment measurement device adapted to be connected to the circuit arrangement.
References Cited (Backward Citations)
US3317016A
Cited
US3682286A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-11 | 1976-12-11 | 1977-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-11 | 1980-12-11 | 1981-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-11 | 1984-12-11 | 1985-06-12 | $7700.00 | Window Closed / Lapsed |