Patent US3147455A successfully refreshed from Google Patents.
US3147455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controlled saturation welding transformer
Assignee: Individual
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Filing: 1963-12-23
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Granted: 1964-09-01
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Expires: 1983-12-23
Abstract
No abstract record available.
Inventors
- 👤 Frederick C Owen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:21
CPC Classifications
H; H01; H01F; H01F29/00; H01F29/14; B; B23; B23K; B23K9/00; B23K9/10; B23K9/1006; H01F29/143
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A WELDING TRANSFORMER COMPRISING A GENERALLY RECTANGULAR CORE INCLUDING END LEG PORTIONS AND TRANSVERSE LEG PORTIONS, A PAIR OF CORE LEG SECTIONS CONNECTING OPPOSITE TRANSVERSE LEG PORTIONS OF SAID CORE INTERMEDIATE SAID END LEG PORTIONS, SHUNT CORE SECTIONS EXTENDING BETWEEN SAID END LEG PORTIONS AND SAID CORE LEG SECTIONS AND GENERALLY AT RIGHT ANGLES THERETO IN OPPOSITE ENDS OF THE CORE, INDUCTIVELY COUPLED PRIMARY AND SECONDARY WINDINGS ADAPTED TO PRODUCE A SECONDARY OUTPUT CURRENT POSITIONED ON SAID CORE INTERMIATE SAID PAIR OF CORE LEG SECTIONS, AND INDUCTANCE WINDINGS DISPOSED ABOUT SAID SHUNT CORE SECTIONS AND ADAPTED FOR CONNECTION TO A D.C. POWER SOURCE TO CHANGE THE RELUCTANCE OF THE CORE AT OPPOSITE ENDS FOR FINELY ADJUSTING THE SECONDARY OUTPUT CURRENT.
Claim 2
Dependent Claim
120 words
A WELDING TRANSFORMER COMPRISING A GENERALLY RECTANGULAR CORE INCLUDING END LEG PORTIONS AND TRANSVERSE LEG PORTIONS, A PAIR OF CORE LEG SECTIONS CONNECTING OPPOSITE TRANSVERSE LEG PORTIONS OF SAID CORE INTERMEDIATE SAID END LEG PORTIONS, SHUNT CORE SECTIONS EXTENDING BETWEEN SAID END LEG PORTIONS AND SAID CORE LEG SECTIONS AND GENERALLY AT RIGHT ANGLES THERETO IN OPPOSITE ENDS OF THE CORE, INDUCTIVELY COUPLED PRIMARY AND SECONDARY WINDINGS ADAPTED TO PRODUCE A SECONDARY OUTPUT CURRENT POSITIONED ON SAID CORE INTERMIATE SAID PAIR OF CORE LEG SECTIONS, AND INDUCTANCE WINDINGS DISPOSED ABOUT SAID SHUNT CORE SECTIONS AND ADAPTED FOR CONNECTION TO A D.C. POWER SOURCE TO CHANGE THE RELUCTANCE OF THE CORE AT OPPOSITE ENDS FOR FINELY ADJUSTING THE SECONDARY OUTPUT CURRENT.
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) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |