US3123746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: —
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Filing: —
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Granted: 1964-03-03
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Expires: 1981-03-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:44
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/18; B; B41; B41J; B41J9/00; B41J9/44; H03K17/51; H03K17/56; H03K17/60; H03K17/64; H04; H04L; H04L13/00; H04L13/18; H04L13/182
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A SOLENOID-DRIVING TRANSISTOR CIRCUIT COMPRISING A TRANSISTOR HAVING AN EMITTER ELECTRODE, A BASE ELECTRODE, AND A COLLECTOR ELECTRODE; MEANS PROVIDING A SOURCE OF DIRECT CURRENT ENERGIZING POTENTIAL FOR SAID TRANSISTOR; A SOLENOID CONNECTED BETWEEN SAID ENERGIZING POTENTIAL PROVIDING MEANS AND SAID COLLECTOR ELECTRODE; AN IMPEDANCE CONNECTED BETWEEN SAID EMITTER ELECTRODE AND A SOURCE OF FIRST REFERENCE POTENTIAL; A CAPACITOR CONNECTED BETWEEN SAID ENERGIZING POTENTIAL PROVIDING MEANS AND SAID SOURCE OF FIRST REFERENCE POTENTIAL; MEANS FOR APPLYING AN INPUT SIGNAL POTENTIAL TO SAID BASE ELECTRODE TO RENDER SAID TRANSISTOR CONDUCTIVE; AND CLAMPING MEANS CONNECTED BETWEEN SAID INPUT SIGNAL POTENTIAL APPLYING MEANS AND A SOURCE OF SECOND REFERENCE POTENTIAL; SAID EMITTER ELECTRODE IMPEDANCE AND SAID CLAMPING MEANS BEING EFFECTIVE IN COMBINATION TO LIMIT THE CURRENT THROUGH SAID SOLENOID TO A PREDETERMINED VALUE.
Claim 2
Dependent Claim
130 words
A SOLENOID-DRIVING TRANSISTOR CIRCUIT COMPRISING A TRANSISTOR HAVING AN EMITTER ELECTRODE, A BASE ELECTRODE, AND A COLLECTOR ELECTRODE; MEANS PROVIDING A SOURCE OF DIRECT CURRENT ENERGIZING POTENTIAL FOR SAID TRANSISTOR; A SOLENOID CONNECTED BETWEEN SAID ENERGIZING POTENTIAL PROVIDING MEANS AND SAID COLLECTOR ELECTRODE; AN IMPEDANCE CONNECTED BETWEEN SAID EMITTER ELECTRODE AND A SOURCE OF FIRST REFERENCE POTENTIAL; A CAPACITOR CONNECTED BETWEEN SAID ENERGIZING POTENTIAL PROVIDING MEANS AND SAID SOURCE OF FIRST REFERENCE POTENTIAL; MEANS FOR APPLYING AN INPUT SIGNAL POTENTIAL TO SAID BASE ELECTRODE TO RENDER SAID TRANSISTOR CONDUCTIVE; AND CLAMPING MEANS CONNECTED BETWEEN SAID INPUT SIGNAL POTENTIAL APPLYING MEANS AND A SOURCE OF SECOND REFERENCE POTENTIAL; SAID EMITTER ELECTRODE IMPEDANCE AND SAID CLAMPING MEANS BEING EFFECTIVE IN COMBINATION TO LIMIT THE CURRENT THROUGH SAID SOLENOID TO A PREDETERMINED VALUE.
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) | 1967-03-03 | 1967-09-02 | 1968-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-03 | 1971-09-02 | 1972-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-03 | 1975-09-02 | 1976-03-03 | $7700.00 | Window Closed / Lapsed |