US3482113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable transfer function circuit
Assignee: Lanteris Space LLC
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Filing: 1966-06-01
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Granted: 1969-12-02
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Expires: 1986-06-01
Abstract
No abstract record available.
Inventors
- 👤 David W Heesh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:48
CPC Classifications
H; H03; H03H; H03H19/00; G; G05; G05D; G05D3/00; G05D3/12; G05D3/14; G05D3/1427; G05D3/18; H03H11/00; H03H11/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A VARIABLE TRANSFER FUNCTION CIRCUIT COMPRISING: (A) A SOURCE OF AN INFORMATION SIGNAL, (B) A SOURCE OF A CONTROL SIGNAL, (C) MEANS FOR DERIVING FROM SAID CONTROL SIGNAL A PULSE-WIDTH-MODULATED SIGNAL WHICH IS REPRESENTATIVE OF SAID CONTROL SIGNAL, (D) AN OPERATIONAL AMPLIFIER INCLUDING A HIGH GAIN DIRECT CURRENT AMPLIFIER, A FEEDBACK CIRCUIT, AND A SERIES INPUT CIRCUIT, ONE OF SAID CIRCUITS CONTAINING TWO BRANCHES, ONE OF WHICH IS RESISTIVE, AND ONE OF WHICH CONTAINS A REACTANCE, (E) MEANS FOR SUPPLYING SAID INFORMATION SIGNAL TO THE INPUT OF SAID OPERATIONAL AMPLIFIER, (F) ELECTRONIC SWITCHING MEANS HAVING CONDUCTIVE AND NONCONDUCTIVE STATES CONNECTING SAID REACTIVE BRANCH
Claim 2
Dependent Claim
103 words
A VARIABLE TRANSFER FUNCTION CIRCUIT COMPRISING: (A) A SOURCE OF AN INFORMATION SIGNAL, (B) A SOURCE OF A CONTROL SIGNAL, (C) MEANS FOR DERIVING FROM SAID CONTROL SIGNAL A PULSE-WIDTH-MODULATED SIGNAL WHICH IS REPRESENTATIVE OF SAID CONTROL SIGNAL, (D) AN OPERATIONAL AMPLIFIER INCLUDING A HIGH GAIN DIRECT CURRENT AMPLIFIER, A FEEDBACK CIRCUIT, AND A SERIES INPUT CIRCUIT, ONE OF SAID CIRCUITS CONTAINING TWO BRANCHES, ONE OF WHICH IS RESISTIVE, AND ONE OF WHICH CONTAINS A REACTANCE, (E) MEANS FOR SUPPLYING SAID INFORMATION SIGNAL TO THE INPUT OF SAID OPERATIONAL AMPLIFIER, (F) ELECTRONIC SWITCHING MEANS HAVING CONDUCTIVE AND NONCONDUCTIVE STATES CONNECTING SAID REACTIVE BRANCH
References Cited (Backward Citations)
US2619552A
Cited
US3237117A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-01 | 1973-06-02 | 1973-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-01 | 1977-06-02 | 1977-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-01 | 1981-06-02 | 1981-12-02 | $7700.00 | Window Closed / Lapsed |