Patent US3930758A successfully refreshed from Google Patents.
Patent US3300655A successfully refreshed from Google Patents.
US3300655A
Expired / Lapsed
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Linear sweep signal generator
Assignee: Hazeltine Research Inc
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Filing: 1963-11-15
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Granted: 1967-01-24
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Expires: 1983-11-15
Abstract
No abstract record available.
Inventors
- 👤 Rosenbluth William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:46
CPC Classifications
H; H03; H03K; H03K4/00; H03K4/06; H03K4/08; H03K4/48; H03K4/50; H03K4/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A LINEAR SWEEP SIGNAL GENERATOR UTILIZING CASCADED CONTROL EFFECTS TO ACHIEVE INCREASED LINEARITY COMPRISING: A CHARGING NETWORK INCLUDING A RESISTIVE ELEMENT AND A CAPACITOR COUPLED TO SAID RESISTIVE ELEMENT THROUGH WHICH CURRENT FLOWS TO CHARGE SAID CAPACITOR; A ZENER DIODE FOR MAINTAINING THE POTENTIAL ACROSS THE RESISTIVE ELEMENTS OF SAID CHARGING NETWORK SUBSTANTIALLY CONSTANT, THE MAINTENANCE OF SAID CHARGING POTENTIAL BEING UNDESIRABLY SUBJECT TO VARIATION DUE TO CHANGES IN ZENER DIODE CURENT FLOW; AND A SOURCE OF CONSTANT CURRENT, COUPLED TO SAID CHARGING NETWORK TO PROVIDE A SUBSTANTIALLY CONSTANT CHARGING CURRENT AND COUPLED TO SAID ZENER DIODE TO STABILIZE ZENER DIODE CURRENT, FOR PROVIDING CASCADED CONTROL EFFECTS WITH SAID CONSTANT CURRENT SOURCE INSURING MAINTENANCE OF SAID CHARGING POTENTIAL BY SAID ZENER DIODE FREE FROM VARIATIONS DUE TO CHANGES IN ZENER DIODE CURRENT FLOW, THEREBY PROVIDING SWEEP SIGNALS OF INCREASED LINEARITY.
Claim 2
Dependent Claim
140 words
A LINEAR SWEEP SIGNAL GENERATOR UTILIZING CASCADED CONTROL EFFECTS TO ACHIEVE INCREASED LINEARITY COMPRISING: A CHARGING NETWORK INCLUDING A RESISTIVE ELEMENT AND A CAPACITOR COUPLED TO SAID RESISTIVE ELEMENT THROUGH WHICH CURRENT FLOWS TO CHARGE SAID CAPACITOR; A ZENER DIODE FOR MAINTAINING THE POTENTIAL ACROSS THE RESISTIVE ELEMENTS OF SAID CHARGING NETWORK SUBSTANTIALLY CONSTANT, THE MAINTENANCE OF SAID CHARGING POTENTIAL BEING UNDESIRABLY SUBJECT TO VARIATION DUE TO CHANGES IN ZENER DIODE CURENT FLOW; AND A SOURCE OF CONSTANT CURRENT, COUPLED TO SAID CHARGING NETWORK TO PROVIDE A SUBSTANTIALLY CONSTANT CHARGING CURRENT AND COUPLED TO SAID ZENER DIODE TO STABILIZE ZENER DIODE CURRENT, FOR PROVIDING CASCADED CONTROL EFFECTS WITH SAID CONSTANT CURRENT SOURCE INSURING MAINTENANCE OF SAID CHARGING POTENTIAL BY SAID ZENER DIODE FREE FROM VARIATIONS DUE TO CHANGES IN ZENER DIODE CURRENT FLOW, THEREBY PROVIDING SWEEP SIGNALS OF INCREASED LINEARITY.
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) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |