US3139588A
Expired / Lapsed
US
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Variable time delay generator utilizing switch means and plural resonating elements
Assignee: SPACE TECHNOLOGY LAB Inc
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Filing: 1962-02-20
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Granted: 1964-06-30
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Expires: 1982-02-20
Abstract
No abstract record available.
Inventors
- 👤 George L Clark
- 👤 John J Hickey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:23
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/13; G; G04; G04F; G04F5/00; H03K17/00; H03K17/28; H03K17/288; H03K3/00; H03K3/02; H03K3/53; H03K3/55
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
A VARIABLE TIME DELAY GENERATOR, COMPRISING: A SWITCHING DEVICE; A DIODE; RESONATING MEANS CONNECTED IN SERIES WITH SAID DIODE AND SAID SWITCHING DEVICE AND FORMING A CIRCUIT THEREWITH THAT IS SELECTIVELY RESONANT AT ANY ONE OF A NUMBER OF PREDETERMINED FREQUENCIES, SAID RESONATING MEANS INCLUDING A PLURALITY OF BRANCHES EACH CONTAINING AN INDUCTOR AND A CAPACITOR IN SERIES, A FIRST BRANCH BEING PERMANENTLY CONNECTED IN SAID CIRCUIT, AND SWITCHING MEANS FOR SELECTIVELY CONNECTING OTHER ONES OF SAID BRANCHES TOGETHER, WITH EACH SUCCESSIVE BRANCH CONNECTED IN PARALLEL WITH A DIFFERENT ONE OF SAID CAPACITORS; A RESISTOR IN PARALLEL WITH SAID DIODE; A DIRECT CURRENT SOURCE AND A RESISTIVE MEANS CONNECTED ACROSS SAID SWITCHING DEVICE AND IN SERIES WITH SAID DIODE AND SAID RESONATING MEANS; AND A SOURCE OF BIAS CURRENT CONNECTED TO SAID SWITCHING DEVICE AND INCLUDING A CAPACITOR AND A RESISTOR CONNECTED IN SERIES THEREWITH AND FORMING A CURRENT DISCHARGE PATH CHARACTERIZED BY A LONG TIME CONSTANT RELATIVE TO THE PERIOD ASSOCIATED WITH ANY OF SAID PREDETERMINED FREQUENCIES.
Claim 2
Dependent Claim
168 words
A VARIABLE TIME DELAY GENERATOR, COMPRISING: A SWITCHING DEVICE; A DIODE; RESONATING MEANS CONNECTED IN SERIES WITH SAID DIODE AND SAID SWITCHING DEVICE AND FORMING A CIRCUIT THEREWITH THAT IS SELECTIVELY RESONANT AT ANY ONE OF A NUMBER OF PREDETERMINED FREQUENCIES, SAID RESONATING MEANS INCLUDING A PLURALITY OF BRANCHES EACH CONTAINING AN INDUCTOR AND A CAPACITOR IN SERIES, A FIRST BRANCH BEING PERMANENTLY CONNECTED IN SAID CIRCUIT, AND SWITCHING MEANS FOR SELECTIVELY CONNECTING OTHER ONES OF SAID BRANCHES TOGETHER, WITH EACH SUCCESSIVE BRANCH CONNECTED IN PARALLEL WITH A DIFFERENT ONE OF SAID CAPACITORS; A RESISTOR IN PARALLEL WITH SAID DIODE; A DIRECT CURRENT SOURCE AND A RESISTIVE MEANS CONNECTED ACROSS SAID SWITCHING DEVICE AND IN SERIES WITH SAID DIODE AND SAID RESONATING MEANS; AND A SOURCE OF BIAS CURRENT CONNECTED TO SAID SWITCHING DEVICE AND INCLUDING A CAPACITOR AND A RESISTOR CONNECTED IN SERIES THEREWITH AND FORMING A CURRENT DISCHARGE PATH CHARACTERIZED BY A LONG TIME CONSTANT RELATIVE TO THE PERIOD ASSOCIATED WITH ANY OF SAID PREDETERMINED FREQUENCIES.
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) | 1967-06-30 | 1967-12-30 | 1968-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-30 | 1971-12-30 | 1972-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-30 | 1975-12-30 | 1976-06-30 | $7700.00 | Window Closed / Lapsed |