US3344359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Base load circuit for semiconductor rectifier
Assignee: ABB Inc USA
•
Filing: 1964-01-22
•
Granted: 1967-09-26
•
Expires: 1984-01-22
Abstract
No abstract record available.
Inventors
- 👤 Francis R Bingham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:46
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/12; G05F1/32; G05F1/33
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
IN COMBINATION A RECTIFIER CIRCUIT, COMPRISING AN A-C TRANSFORMER, D-C OUTPUT TERMINALS, RECTIFIER MEANS CONNECTED BETWEEN SAID A-C TRANSFORMER AND SAID D-C OUTPUT TERMINALS, AND OUTPUT VOLTAGE CONTROL CIRCUIT MEANS CONNECTED IN SERIES WITH SAID RECTIFIER MEANS AND BETWEEN SAID A-C TRANSFORMER AND SAID D-C OUTPUT TERMINALS; A BASE LOAD CIRCUIT CONNECTED IN SERIES WITH SAID A-C TRANSFORMER AND SAID OUTPUT VOLTAGE CONTROL CIRCUIT MEANS AND INCLUDING A BASE LOAD IMPEDANCE AND AN AUXILIARY VOLTAGE CONTROL CIRCUIT FOR CONTROLLING THE VOLTAGE APPLIED FROM SAID TRANSFORMER MEANS TO SAID BASE LOAD IMPEDANCE; SAID OUTPUT VOLTAGE CONTROL CIRCUIT AND SAID AUXILIARY VOLTAGE CONTROL CIRCUIT HAVING RESPECTIVE OPERATING CONTROL MEANS; SAID OPERATING CONTROL MEANS OF SAID OUTPUT VOLTAGE CONTROL CIRCUIT AND SAID AUXILIARY VOLTAGE CONTROL CIRCUIT BEING CONNECTED TOGETHER WHEREBY THE OUTPUT VOLTAGE OF SAID AUXILIARY VOLTAGE CONTROL CIRCUIT IS RELATIVELY CONSTANT WHEN SAID OUTPUT VOLTAGE CONTROL CIRCUIT IS ADJUSTED THROUGH A PREDETERMINED RANGE OF OUTPUT VOLTAGES OF SAID RECTIFIER CIRCUIT.
Claim 2
Dependent Claim
158 words
IN COMBINATION A RECTIFIER CIRCUIT, COMPRISING AN A-C TRANSFORMER, D-C OUTPUT TERMINALS, RECTIFIER MEANS CONNECTED BETWEEN SAID A-C TRANSFORMER AND SAID D-C OUTPUT TERMINALS, AND OUTPUT VOLTAGE CONTROL CIRCUIT MEANS CONNECTED IN SERIES WITH SAID RECTIFIER MEANS AND BETWEEN SAID A-C TRANSFORMER AND SAID D-C OUTPUT TERMINALS; A BASE LOAD CIRCUIT CONNECTED IN SERIES WITH SAID A-C TRANSFORMER AND SAID OUTPUT VOLTAGE CONTROL CIRCUIT MEANS AND INCLUDING A BASE LOAD IMPEDANCE AND AN AUXILIARY VOLTAGE CONTROL CIRCUIT FOR CONTROLLING THE VOLTAGE APPLIED FROM SAID TRANSFORMER MEANS TO SAID BASE LOAD IMPEDANCE; SAID OUTPUT VOLTAGE CONTROL CIRCUIT AND SAID AUXILIARY VOLTAGE CONTROL CIRCUIT HAVING RESPECTIVE OPERATING CONTROL MEANS; SAID OPERATING CONTROL MEANS OF SAID OUTPUT VOLTAGE CONTROL CIRCUIT AND SAID AUXILIARY VOLTAGE CONTROL CIRCUIT BEING CONNECTED TOGETHER WHEREBY THE OUTPUT VOLTAGE OF SAID AUXILIARY VOLTAGE CONTROL CIRCUIT IS RELATIVELY CONSTANT WHEN SAID OUTPUT VOLTAGE CONTROL CIRCUIT IS ADJUSTED THROUGH A PREDETERMINED RANGE OF OUTPUT VOLTAGES OF SAID RECTIFIER CIRCUIT.
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) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |