Patent US3395095A successfully refreshed from Google Patents.
Patent US3214696A successfully refreshed from Google Patents.
US3214696A
Expired / Lapsed
US
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Rectangular pulse generating circuit
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1962-12-26
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Granted: 1965-10-26
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Expires: 1982-12-26
Abstract
No abstract record available.
Inventors
- 👤 John J Hickey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:41
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/53; H03K3/55
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
203 words
A RECTANGULAR PULSE GENERATING CIRCUIT, COMPRISING A FIRST ENERGY STORAGE DEVICE; MEANS FOR CHARGING SAID FIRST ENERGY STORAGE DEVICE TO A PREDETERMINED VOLTAGE IN EXCESS OF THE DESIRED AMPLITUDE OF SAID RECTANGULAR PULSE; A DISCHARGE CIRCUIT IN SERIES WITH SAID FIRST ENERGY STORAGE DEVICE AND INCLUDING A FIRST SWITCHING MEANS AND A DIRST RESISTOR; SAID FIRST SWITCHING MEANS BEING ADAPTED TO BE RENDERED CONDUCTING FOR CAUSING SAID FIRST ENERGY STORAGE DEVICE TO DISCHARGE CURRENT THROUGH SAID FIRST RESISTOR TO GENERATE A FIRST PORTION OF SAID RECTANGULAR PULSE; A VOLTAGE LIMITER COMPRISING A ZENER DIODE MEANS CONNECTED IN PARALLEL WITH SAID FIRST RESISTOR FOR LIMITING THE AMPLITUDE OF DAID RECTANGULAR PULSE; A CHARGING CIRCUIT CONNECTED IN PARALLEL WITH SAID FIRST RESISTOR AND INCLUDING A SECOND ENERGY STORAGE DEVICE ADAPTED TO BE CHARGED EXPONENTIALLY BY DISCHARGE CURRENT FROM SAID FIRST ENERGY STORAGE DEVICE; MEANS RESPONSIVE TO THE RISING VOLTAGE ON SAID SECOND ENERGY STORAGE DEVICE FOR GENERATING A PULSE TERMINATING SIGNAL WHEN THE RISING VOLTAGE REACHES A VALUE EQUAL TO A PREDETERMINED FRACTIONAL PART OF THE PULSE AMPLITUDE; A SECOND SWITCHING MEANS CONNECTED ACROSS SAID FIRST RESISTOR; AND MEANS FOR COUPLING SAID PULSE TERMINATING SIGNAL TO SAID SECOND SWITCHING MEANS FOR TERMINATING SAID RECTANGULAR PULSE.
Claim 2
Dependent Claim
203 words
A RECTANGULAR PULSE GENERATING CIRCUIT, COMPRISING A FIRST ENERGY STORAGE DEVICE; MEANS FOR CHARGING SAID FIRST ENERGY STORAGE DEVICE TO A PREDETERMINED VOLTAGE IN EXCESS OF THE DESIRED AMPLITUDE OF SAID RECTANGULAR PULSE; A DISCHARGE CIRCUIT IN SERIES WITH SAID FIRST ENERGY STORAGE DEVICE AND INCLUDING A FIRST SWITCHING MEANS AND A DIRST RESISTOR; SAID FIRST SWITCHING MEANS BEING ADAPTED TO BE RENDERED CONDUCTING FOR CAUSING SAID FIRST ENERGY STORAGE DEVICE TO DISCHARGE CURRENT THROUGH SAID FIRST RESISTOR TO GENERATE A FIRST PORTION OF SAID RECTANGULAR PULSE; A VOLTAGE LIMITER COMPRISING A ZENER DIODE MEANS CONNECTED IN PARALLEL WITH SAID FIRST RESISTOR FOR LIMITING THE AMPLITUDE OF DAID RECTANGULAR PULSE; A CHARGING CIRCUIT CONNECTED IN PARALLEL WITH SAID FIRST RESISTOR AND INCLUDING A SECOND ENERGY STORAGE DEVICE ADAPTED TO BE CHARGED EXPONENTIALLY BY DISCHARGE CURRENT FROM SAID FIRST ENERGY STORAGE DEVICE; MEANS RESPONSIVE TO THE RISING VOLTAGE ON SAID SECOND ENERGY STORAGE DEVICE FOR GENERATING A PULSE TERMINATING SIGNAL WHEN THE RISING VOLTAGE REACHES A VALUE EQUAL TO A PREDETERMINED FRACTIONAL PART OF THE PULSE AMPLITUDE; A SECOND SWITCHING MEANS CONNECTED ACROSS SAID FIRST RESISTOR; AND MEANS FOR COUPLING SAID PULSE TERMINATING SIGNAL TO SAID SECOND SWITCHING MEANS FOR TERMINATING SAID RECTANGULAR PULSE.
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) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |