Patent US3249770A successfully refreshed from Google Patents.
US3249770A
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Rectangular pulse generating circuit
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1964-06-24
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Granted: 1966-05-03
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Expires: 1984-06-24
Abstract
No abstract record available.
Inventors
- 👤 John J Hickey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:35
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/53; H03K3/57; H03K3/33
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A PULSE GENERATING CIRCUIT, COMPRISING: CHARGE STORAGE MEANS; A LOW IMPEDANCE MEANS IN CIRCUIT WITH SAID CHARGE STORAGE MEANS; A HIGH IMPEDANCE MEANS IN CIRCUIT WITH SAID CHARGE STORAGE MEANS; MEANS FOR CAUSING UNIDIRECTIONAL CURRENT TO FLOW IN SAID LOW AND HIGH IMPEDANCE MEANS FROM SAID STORAGE MEANS; MEANS FOR INTERRUPTING CURRENT FLOW IN SAID LOW IMPEDANCE MEANS WHEN THE CURRENT THEREIN HAS ATTAINED A PREDETERMINED LEVEL, THEREBY TO INCREASE THE CURRENT IN SAID HIGH IMPEDANCE MEANS AND THE VOLTAGE THEREACROSS; AND MEANS FOR LIMITING THE VOLTAGE DEVELOPED ACROSS SAID HIGH IMPEDANCE MEANS.
Claim 2
Dependent Claim
93 words
A PULSE GENERATING CIRCUIT, COMPRISING: CHARGE STORAGE MEANS; A LOW IMPEDANCE MEANS IN CIRCUIT WITH SAID CHARGE STORAGE MEANS; A HIGH IMPEDANCE MEANS IN CIRCUIT WITH SAID CHARGE STORAGE MEANS; MEANS FOR CAUSING UNIDIRECTIONAL CURRENT TO FLOW IN SAID LOW AND HIGH IMPEDANCE MEANS FROM SAID STORAGE MEANS; MEANS FOR INTERRUPTING CURRENT FLOW IN SAID LOW IMPEDANCE MEANS WHEN THE CURRENT THEREIN HAS ATTAINED A PREDETERMINED LEVEL, THEREBY TO INCREASE THE CURRENT IN SAID HIGH IMPEDANCE MEANS AND THE VOLTAGE THEREACROSS; AND MEANS FOR LIMITING THE VOLTAGE DEVELOPED ACROSS SAID HIGH IMPEDANCE MEANS.
References Cited (Backward Citations)
US3100872A
Cited
US3168654A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |