US3249771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized timing circuit
Assignee: Allen Bradley Co LLC
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Filing: 1964-09-16
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Granted: 1966-05-03
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Expires: 1984-09-16
Abstract
No abstract record available.
Inventors
- 👤 James N Pearse
- 👤 James D Stewardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 03:16
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/35; H03K3/351; H03K5/00; H03K5/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A TIMING CIRCUIT COMPRISING THE COMBINATION OF A DIRECT CURRENT POWER SOURCE; AN ELECTRICAL ENERGY STORAGE CIRCUIT HAVING A RESISTIVE COMPONENT AND A CAPACITIVE COMPONENT, SAID STORAGE CIRCUIT BEING RESPONSIVE TO SAID POWER SOURCE; A VOLTAGE SENSING CIRCUIT INCLUDING A UNIJUNCTION TRANSISTOR HAVING AN EMITTER, A FIRST BASE ELECTRODE AND A SECOND BASE ELECTRODE WITH THE FIRST AND SECOND BASE ELECTRODES EXTENDING ACROSS SAID POWER SOURCE; AND A STABILIZER CIRCUIT INCLUDING A UNIDIRECTIONAL DIODE AND A TRANSISTOR, THE DIODE HAVING AN ANODE AND A CATHODE WITH THE ANODE CONNECTED TO SAID STORAGE CIRCUIT, AND THE TRANSISTOR HAVING A BASE ELECTRODE AND AND AN EMITTER-COLLECTOR CIRCUIT WITH THE BASE ELEC-
Claim 2
Dependent Claim
109 words
A TIMING CIRCUIT COMPRISING THE COMBINATION OF A DIRECT CURRENT POWER SOURCE; AN ELECTRICAL ENERGY STORAGE CIRCUIT HAVING A RESISTIVE COMPONENT AND A CAPACITIVE COMPONENT, SAID STORAGE CIRCUIT BEING RESPONSIVE TO SAID POWER SOURCE; A VOLTAGE SENSING CIRCUIT INCLUDING A UNIJUNCTION TRANSISTOR HAVING AN EMITTER, A FIRST BASE ELECTRODE AND A SECOND BASE ELECTRODE WITH THE FIRST AND SECOND BASE ELECTRODES EXTENDING ACROSS SAID POWER SOURCE; AND A STABILIZER CIRCUIT INCLUDING A UNIDIRECTIONAL DIODE AND A TRANSISTOR, THE DIODE HAVING AN ANODE AND A CATHODE WITH THE ANODE CONNECTED TO SAID STORAGE CIRCUIT, AND THE TRANSISTOR HAVING A BASE ELECTRODE AND AND AN EMITTER-COLLECTOR CIRCUIT WITH THE BASE ELEC-
References Cited (Backward Citations)
US3170124A
Cited
US3131318A
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 |