US3211901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonlinear function generating means
Assignee: Douglas Aircraft Co Inc
•
Filing: 1959-08-31
•
Granted: 1965-10-12
•
Expires: 1979-08-31
Abstract
No abstract record available.
Inventors
- 👤 Jr William Comley
- 👤 Ladis D Kovach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:49
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/20; G06G7/16; G06G7/164; G06G7/22; G06G7/24; H; H01; H01C; H01C7/00; H01C7/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A FUNCTION DEVICE FOR ENABLING THE PRODUCTION OF A CURRENT FLOW WHICH IS PROPORTIONAL TO A PREDETERMINED EXPONENTIAL OF AN INPUT VOLTAGE WITH LESS THAN A PREDETERMINED PERCENTAGE ERROR, FOR INPUT VOLTAGES OF UP TO A PREDETERMINED MAXIMUM TOTAL VOLTAGE COMPRISING: A PLURALITY OF AT LEAST FOUR VARISTOR ELEMENTS CONNECTED IN SERIES, EACH ELEMENT CHARACTERIZED BY A CAPABILITY, WHEN CONNECTED IN SERIES WITH A LINEAR RESISTOR, OF ENABLING CURRENT FLOW THROUGH SAID ELEMENT WHICH VARIES ACCORDING TO SAID PREDETERMINED EXPONENTIAL FOR VOLTAGES ACROSS THE ELEMENT AND RESISTOR OF UP TO A PARTICULAR PARTIAL VOLTAGE WITH LESS THAN APPROXIMATELY IN SAID PREDETERMINED PERCENTAGE ERROR, THE SUM OF SAID PARTIAL VOLTAGES OF SAID ELEMENTS BEING APPROXIMATELY EQUAL TO SAID PREDETERMINED MAXIMUM TOTAL VOLTAGE.
Claim 2
Dependent Claim
121 words
A FUNCTION DEVICE FOR ENABLING THE PRODUCTION OF A CURRENT FLOW WHICH IS PROPORTIONAL TO A PREDETERMINED EXPONENTIAL OF AN INPUT VOLTAGE WITH LESS THAN A PREDETERMINED PERCENTAGE ERROR, FOR INPUT VOLTAGES OF UP TO A PREDETERMINED MAXIMUM TOTAL VOLTAGE COMPRISING: A PLURALITY OF AT LEAST FOUR VARISTOR ELEMENTS CONNECTED IN SERIES, EACH ELEMENT CHARACTERIZED BY A CAPABILITY, WHEN CONNECTED IN SERIES WITH A LINEAR RESISTOR, OF ENABLING CURRENT FLOW THROUGH SAID ELEMENT WHICH VARIES ACCORDING TO SAID PREDETERMINED EXPONENTIAL FOR VOLTAGES ACROSS THE ELEMENT AND RESISTOR OF UP TO A PARTICULAR PARTIAL VOLTAGE WITH LESS THAN APPROXIMATELY IN SAID PREDETERMINED PERCENTAGE ERROR, THE SUM OF SAID PARTIAL VOLTAGES OF SAID ELEMENTS BEING APPROXIMATELY EQUAL TO SAID PREDETERMINED MAXIMUM TOTAL VOLTAGE.
References Cited (Backward Citations)
US2698134A
Cited
US2666576A
Cited
US2683766A
Cited
US2643348A
Cited
US2691724A
Cited
US2890832A
Cited
US3051873A
Cited
US2945177A
Cited
US2942182A
Cited
US3051847A
Cited
US3064898A
Cited
US3056100A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |