Patent US3171040A successfully refreshed from Google Patents.
US3171040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fast charging circuit for pulse networks
Assignee: General Dynamics Corp
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Filing: 1961-01-16
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Granted: 1965-02-23
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Expires: 1981-01-16
Abstract
No abstract record available.
Inventors
- 👤 Helmut K Goebel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:34
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/53; H03K3/57
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
207 words
IN COMBINATION IN A PULSE GENERATING SYSTEM, A CAPACITY STORAGE MEANS, A CURRENT SOURCE FOR CHARGING SAID STORAGE MEANS, A RESISTOR OF PREDETERMINED VALUE IN THE CHARGING CIRCUIT TO ESTABLISH A PREDETERMINED CHARGING TIME CONSTANT, A FIRST TRIGGERABLE SOLID STATE SWITCH MEANS, A LOAD CIRCUIT AND SAID FIRT SWITCH MEANS BEING SERIALLY CONNECTED WITH SAID STORAGE MEANS FOR DELIVERING THE ENERGY IN SAID STORAGE MEANS TO SAID LOAD CIRCUIT IN A SINGLE POWER PULSE WHEN SAID FIRST SWITCH MEANS IS TRIGGERED, SAID RESISTOR BEING CONNECTED TO SAID FIRST SWITCH MEANS FOR APPLYING HOLDING CURRENT THERETO FOR MAINTAINING SAID FIRST SWITCH MEANS IN OPEN CONDITION EXCEPT WHEN TRIGGERED, DIFFERENTIATING MEANS CONNECTED TO SAID LOAD CIRCUIT AND RESPONSIVE TO THE DECAYING PORTION OF SAID POWER PULSE FOR PRODUCING A VOLTAGE SPIKE TO MARK THE TERMINATION OF SAID POWER PULSE, AND A SECOND SWITCH MEANS CONNECTED ACROSS SAID RESISTOR IN THE CHARGING CIRCUIT AND RESPONSIVE TO SAID SPIKE FOR MOMENTARILY REDUCING THE RESISTANCE OF THE PATH BETWEEN SAID SOURCE AND SAID STORAGE MEANS UNTIL SAID STORAGE MEANS IS SUBSTANTIALLY CHARGED BY SAID CIRCUIT SOURCE, AND DELAY MEANS IN CIRCUIT BETWEEN SAID DIFFERENTIATING MEANS AND SAID SECOND SWITCH MEANS FOR PERMITTING SAID FIRST SWITCH MEANS TO FULLY OPEN BEFORE CHARGING REOCCURS.
Claim 2
Dependent Claim
207 words
IN COMBINATION IN A PULSE GENERATING SYSTEM, A CAPACITY STORAGE MEANS, A CURRENT SOURCE FOR CHARGING SAID STORAGE MEANS, A RESISTOR OF PREDETERMINED VALUE IN THE CHARGING CIRCUIT TO ESTABLISH A PREDETERMINED CHARGING TIME CONSTANT, A FIRST TRIGGERABLE SOLID STATE SWITCH MEANS, A LOAD CIRCUIT AND SAID FIRT SWITCH MEANS BEING SERIALLY CONNECTED WITH SAID STORAGE MEANS FOR DELIVERING THE ENERGY IN SAID STORAGE MEANS TO SAID LOAD CIRCUIT IN A SINGLE POWER PULSE WHEN SAID FIRST SWITCH MEANS IS TRIGGERED, SAID RESISTOR BEING CONNECTED TO SAID FIRST SWITCH MEANS FOR APPLYING HOLDING CURRENT THERETO FOR MAINTAINING SAID FIRST SWITCH MEANS IN OPEN CONDITION EXCEPT WHEN TRIGGERED, DIFFERENTIATING MEANS CONNECTED TO SAID LOAD CIRCUIT AND RESPONSIVE TO THE DECAYING PORTION OF SAID POWER PULSE FOR PRODUCING A VOLTAGE SPIKE TO MARK THE TERMINATION OF SAID POWER PULSE, AND A SECOND SWITCH MEANS CONNECTED ACROSS SAID RESISTOR IN THE CHARGING CIRCUIT AND RESPONSIVE TO SAID SPIKE FOR MOMENTARILY REDUCING THE RESISTANCE OF THE PATH BETWEEN SAID SOURCE AND SAID STORAGE MEANS UNTIL SAID STORAGE MEANS IS SUBSTANTIALLY CHARGED BY SAID CIRCUIT SOURCE, AND DELAY MEANS IN CIRCUIT BETWEEN SAID DIFFERENTIATING MEANS AND SAID SECOND SWITCH MEANS FOR PERMITTING SAID FIRST SWITCH MEANS TO FULLY OPEN BEFORE CHARGING REOCCURS.
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) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |