US3296379A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monophonic-stereophonic automatic switching circuit
Assignee: H H SCOTT Inc
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Filing: 1964-06-18
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Granted: 1967-01-03
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Expires: 1984-06-18
Abstract
No abstract record available.
Inventors
- 👤 Recklinghausen Daniel R Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:52
CPC Classifications
H; H03; H03D; H03D1/00; H03D1/22; H03D1/2209; H03D1/2218
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
199 words
APPARATUS FOR AUTOMATICALLY SWITCHING COMMON PAIRS OF OUTPUT TERMINALS TO MONOPHONIC AND STEREOPHONIC SIGNAL OUTPUTS, THAT COMPRISES, A TWO OPERATIONAL STATE TRIGGER CIRCUIT BIASED NORMALLY TO OCCUPY ONE PREDETERMINED STATE OF OPERATION, TWO REVERSELY POLED SWITCHING DIODE MEANS CONNECTED TO THE SAID OUTPUT TERMINALS AND BIASED SO THAT ONE DIODE MEANS ONLY IS NORMALLY EFFECTIVE, MONOPHONIC AND STEREOPHONIC SIGNAL-RECEIVING MEANS, MEANS FOR CONNECTING THE MONOPHONIC AND STEREOPHONIC SIGNALRECEIVING MEANS TO THE DIODE MEANS, MEANS FOR MAINTAINING THE TRIGGER CIRCUIT IN THE SAID PREDETERMINED STATE, MEANS RESPONSIVE TO THE OUTPUT OF THE MONOPHONIC SIGNALRECEIVING MEANS FOR APPLYING THE MONOPHONIC SIGNAL OUTPUT THROUGH THE SAID ONE DIODE MEANS TO THE SAID PAIRS OF OUTPUT TERMINALS, MEANS RESPONSIVE TO THE OUTPUT OF THE STEREOPHONIC SIGNAL-RECEIVING MEANS FOR MODIFYING THE BIAS OF THE SAID TRIGGER CIRCUIT TO SWITCH THE SAME TO THE OTHER OF THE SAID TWO OPERATIONAL STATES, AND MEANS CONTROLLED BY THE SWITCHING TO THE SAID OTHER STATE FOR CHANGING THE DIODE BIAS TO RENDER THE SAID ONE DIODE MEANS INEFFECTIVE AND THE OTHER DIODE MEANS EFFECTIVE, AND MEANS FOR THEREUPON APPLYING THE STEREOPHONIC PAIR OF RECEIVED SIGNALS THROUGH THE OTHER EFFECTIVE DIODE MEANS TO THE SAID PAIRS OF OUTPUT TERMINALS.
Claim 2
Dependent Claim
199 words
APPARATUS FOR AUTOMATICALLY SWITCHING COMMON PAIRS OF OUTPUT TERMINALS TO MONOPHONIC AND STEREOPHONIC SIGNAL OUTPUTS, THAT COMPRISES, A TWO OPERATIONAL STATE TRIGGER CIRCUIT BIASED NORMALLY TO OCCUPY ONE PREDETERMINED STATE OF OPERATION, TWO REVERSELY POLED SWITCHING DIODE MEANS CONNECTED TO THE SAID OUTPUT TERMINALS AND BIASED SO THAT ONE DIODE MEANS ONLY IS NORMALLY EFFECTIVE, MONOPHONIC AND STEREOPHONIC SIGNAL-RECEIVING MEANS, MEANS FOR CONNECTING THE MONOPHONIC AND STEREOPHONIC SIGNALRECEIVING MEANS TO THE DIODE MEANS, MEANS FOR MAINTAINING THE TRIGGER CIRCUIT IN THE SAID PREDETERMINED STATE, MEANS RESPONSIVE TO THE OUTPUT OF THE MONOPHONIC SIGNALRECEIVING MEANS FOR APPLYING THE MONOPHONIC SIGNAL OUTPUT THROUGH THE SAID ONE DIODE MEANS TO THE SAID PAIRS OF OUTPUT TERMINALS, MEANS RESPONSIVE TO THE OUTPUT OF THE STEREOPHONIC SIGNAL-RECEIVING MEANS FOR MODIFYING THE BIAS OF THE SAID TRIGGER CIRCUIT TO SWITCH THE SAME TO THE OTHER OF THE SAID TWO OPERATIONAL STATES, AND MEANS CONTROLLED BY THE SWITCHING TO THE SAID OTHER STATE FOR CHANGING THE DIODE BIAS TO RENDER THE SAID ONE DIODE MEANS INEFFECTIVE AND THE OTHER DIODE MEANS EFFECTIVE, AND MEANS FOR THEREUPON APPLYING THE STEREOPHONIC PAIR OF RECEIVED SIGNALS THROUGH THE OTHER EFFECTIVE DIODE MEANS TO THE SAID PAIRS OF OUTPUT TERMINALS.
References Cited (Backward Citations)
US3070662A
Cited
US3175041A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |