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US3356928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regulated rectifier for welding power supplies
Assignee: Infineon Technologies Americas Corp
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Filing: 1965-02-15
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Granted: 1967-12-05
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Expires: 1985-02-15
Abstract
No abstract record available.
Inventors
- 👤 Frank W Parrish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:57
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/10; B23K9/1006; B23K9/1043; B23K9/1056
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
A RECTIFIER SYSTEM FOR SUPPLY POWER TO A D-C LOAD FROM AN A-C SOURCE; SAID RECTIFIER SYSTEM COMPRISING A FIRST AND SECOND RECTIFIER SUBSYSTEM; SAID FIRST RECTIFIER SUBSYSTEM INCLUDING RECTIFIER DIODE MEANS HAVING A GIVEN CURRENT RATING SUBSTANTIALLY EQUAL TO THE LOWEST LOAD CURRENT TO BE CARRIED BY SAID LOAD AND HAVING A GIVEN OUTPUT VOLTAGE; SAID SECOND RECTIFIER SUBSYSTEM INCLUDING CONTROLLED RECTIFIER MEANS HAVING AN OUTPUT VOLTAGE ADJUSTABLE FROM SAID GIVEN OUTPUT VOLTAGE OF SAID RECTIFIER DIODE MEANS TO A VOLTAGE OUTPUT SUBSTANTIALLY HIGHER THAN SAID GIVEN OUTPUT VOLTAGE; SAID FIRST AND SECOND RECTIFIER SUBSYSTEMS EACH HAVING INPUT A-C TERMINALS AND OUTPUT D-C TERMINALS; SAID INPUT A-C TERMINALS EACH CONNECTED TO SAID A-C SOURCE; OUTPUT D-C TERMINALS BEING CONNECTED IN PARALLEL WITH ONE ANOTHER AND ACROSS SAID LOAD; AND CONTROL MEANS CONNECTED TO SAID CONTROL RECTIFIER MEANS FOR ADJUSTABLY SWITCHING ADDITIONAL OUTPUT VOLTAGE FROM SAID SECOND RECTIFIER SUBSYSTEM IN PLACE OF SAID FIRST RECTIFIER SUBSYSTEM TO ADJUSTABLY CONTROL THE CURRENT THROUGH SAID LOAD; AND A THIRD RECTIFIER SUBSYSTEM; SAID THIRD RECTIFIER SUBSYSTEM HAVING A CURRENT RATING LOWER
Claim 2
Dependent Claim
178 words
A RECTIFIER SYSTEM FOR SUPPLY POWER TO A D-C LOAD FROM AN A-C SOURCE; SAID RECTIFIER SYSTEM COMPRISING A FIRST AND SECOND RECTIFIER SUBSYSTEM; SAID FIRST RECTIFIER SUBSYSTEM INCLUDING RECTIFIER DIODE MEANS HAVING A GIVEN CURRENT RATING SUBSTANTIALLY EQUAL TO THE LOWEST LOAD CURRENT TO BE CARRIED BY SAID LOAD AND HAVING A GIVEN OUTPUT VOLTAGE; SAID SECOND RECTIFIER SUBSYSTEM INCLUDING CONTROLLED RECTIFIER MEANS HAVING AN OUTPUT VOLTAGE ADJUSTABLE FROM SAID GIVEN OUTPUT VOLTAGE OF SAID RECTIFIER DIODE MEANS TO A VOLTAGE OUTPUT SUBSTANTIALLY HIGHER THAN SAID GIVEN OUTPUT VOLTAGE; SAID FIRST AND SECOND RECTIFIER SUBSYSTEMS EACH HAVING INPUT A-C TERMINALS AND OUTPUT D-C TERMINALS; SAID INPUT A-C TERMINALS EACH CONNECTED TO SAID A-C SOURCE; OUTPUT D-C TERMINALS BEING CONNECTED IN PARALLEL WITH ONE ANOTHER AND ACROSS SAID LOAD; AND CONTROL MEANS CONNECTED TO SAID CONTROL RECTIFIER MEANS FOR ADJUSTABLY SWITCHING ADDITIONAL OUTPUT VOLTAGE FROM SAID SECOND RECTIFIER SUBSYSTEM IN PLACE OF SAID FIRST RECTIFIER SUBSYSTEM TO ADJUSTABLY CONTROL THE CURRENT THROUGH SAID LOAD; AND A THIRD RECTIFIER SUBSYSTEM; SAID THIRD RECTIFIER SUBSYSTEM HAVING A CURRENT RATING LOWER
References Cited (Backward Citations)
US2734981A
Cited
US3284666A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-04 | 1971-06-05 | 1971-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-04 | 1975-06-05 | 1975-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-04 | 1979-06-05 | 1979-12-05 | $7700.00 | Window Closed / Lapsed |