US3329905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High speed switchover circuit
Assignee: General Dynamics Corp
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Filing: 1964-05-21
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Granted: 1967-07-04
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Expires: 1984-05-21
Abstract
No abstract record available.
Inventors
- 👤 Niertit Frank
- 👤 Shirman Jack
- 👤 Eugene F Spangenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:23
CPC Classifications
H; H04; H04J; H04J3/00; H04J3/02; H04J3/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
A CIRCUIT FOR HIGH SPEED SWITCHOVER FROM A READY TO A STANDBY SIGNAL SOURCE COMPRISING: FIRST, SECOND AND THIRD SIGNAL SOURCES, SAID FIRST AND SECOND SOURCES BEING CONNECTED TO A MIXER, SAID MIXER BEING CONNECTED TO A FREQUENCY SENSITIVE DETECTING MEANS, FIRST GATING MEANS INTERCONNECTING SAID FIRST AND THIRD SIGNAL SOURCES WITH THE CIRCUIT OUTPUT, SECOND NORMALLY INHIBITED GATING MEANS INTERCONNECTING SAID FIRST AND THIRD SIGNAL SOURCES, SAID FIRST AND SECOND GATING MEANS BEING CONNECTED TO SAID DETECTING MEANS AND CONTROLLED THEREBY, SAID FIRST GATING MEANS BEING CONTROLLED SO THAT THE SIGNAL FROM THE FIRST SOURCE REACHES SAID OUTPUT AS LONG AS NO DEVIATION FROM A DESIRED BANDWIDTH IS DETECTED, SAID DETECTING MEANS ALTERING THE CONDITION OF SAID FIRST GATING MEANS SO THAT THE SIGNAL FROM SAID THIRD SOURCE IS ALLOWED TO REACH SAID CIRCUIT OUTPUT WHILE THE SIGNAL FROM SAID FIRST SOURCE IS BLOCKED UPON DETECTION OF AN OUT-OF-BANDWIDTH CONDITION, AND SAID DETECTING MEANS BRIEFLY ENABLING SAID SECOND GATING MEANS UPON DETECTION OF AN OUT-OF-BANDWIDTH CONDITION CAUSING SAID FIRST AND THIRD SIGNAL SOURCES TO BE MOMENTARILY SYNCHRONIZED.
Claim 2
Dependent Claim
178 words
A CIRCUIT FOR HIGH SPEED SWITCHOVER FROM A READY TO A STANDBY SIGNAL SOURCE COMPRISING: FIRST, SECOND AND THIRD SIGNAL SOURCES, SAID FIRST AND SECOND SOURCES BEING CONNECTED TO A MIXER, SAID MIXER BEING CONNECTED TO A FREQUENCY SENSITIVE DETECTING MEANS, FIRST GATING MEANS INTERCONNECTING SAID FIRST AND THIRD SIGNAL SOURCES WITH THE CIRCUIT OUTPUT, SECOND NORMALLY INHIBITED GATING MEANS INTERCONNECTING SAID FIRST AND THIRD SIGNAL SOURCES, SAID FIRST AND SECOND GATING MEANS BEING CONNECTED TO SAID DETECTING MEANS AND CONTROLLED THEREBY, SAID FIRST GATING MEANS BEING CONTROLLED SO THAT THE SIGNAL FROM THE FIRST SOURCE REACHES SAID OUTPUT AS LONG AS NO DEVIATION FROM A DESIRED BANDWIDTH IS DETECTED, SAID DETECTING MEANS ALTERING THE CONDITION OF SAID FIRST GATING MEANS SO THAT THE SIGNAL FROM SAID THIRD SOURCE IS ALLOWED TO REACH SAID CIRCUIT OUTPUT WHILE THE SIGNAL FROM SAID FIRST SOURCE IS BLOCKED UPON DETECTION OF AN OUT-OF-BANDWIDTH CONDITION, AND SAID DETECTING MEANS BRIEFLY ENABLING SAID SECOND GATING MEANS UPON DETECTION OF AN OUT-OF-BANDWIDTH CONDITION CAUSING SAID FIRST AND THIRD SIGNAL SOURCES TO BE MOMENTARILY SYNCHRONIZED.
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) | 1970-07-03 | 1971-01-02 | 1971-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-03 | 1975-01-02 | 1975-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-03 | 1979-01-02 | 1979-07-04 | $7700.00 | Window Closed / Lapsed |