US3248637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Static inverter for changing unregulated d. c. to a. c. and regulated d. c.
Assignee: Westinghouse Electric Corp
•
Filing: 1961-07-24
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Granted: 1966-04-26
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Expires: 1981-07-24
Abstract
No abstract record available.
Inventors
- 👤 Willard S Albert
- 👤 Arthur B Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:57
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/505; H02M7/515; H02M7/525; H02M3/00; H02M3/02; H02M3/04; H02M3/10; H02M3/22; H02M3/24; H02M3/28; H02M3/305; H02M3/315; H02M3/3155; H02M3/325; H02M3/335; H02M3/33507; H02M3/33569; H02M3/33573; H02M3/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
AN ELECTRICAL SYSTEM COMPRISING, A CONTROLLED FREQUENCY INVERTER HAVING A RANDOMLY VARYING DIRECT CURRENT INPUT AND AN ALTERNATING CURRENT OUTPUT, MEANS RECTIFYING AND ALTERNATING CURRENT OUTPUT, A SATUABLE REACTOR HAVING A PLURALITY OF WINDINGS, ONE WINDING OF SAID SATURABLE REACTOR BEING CONNECTED TO THE OUTPUT OF SAID RECTIFYING MEANS TO PRODUCE A MAGNETIC FLUX IN ONE DIRECTION IN THE CORE OF SAID SATURABLE REACTOR, MEANS APPLYING A CONSTANT MAGNITUDE DIRECT CURRENT POTENTIAL TO A SECOND WINDING OF SAID SATURABLE REACTOR TO PRODUCE A MAGNETIC FLUX IN OPPOSITION TO THE FLUX PRODUCED BY SAID ONE WINDING, THE FLUX PRODUCED BY SAID SECOND WINDING BEING SUFFICIENT TO SATURATE THE CORE OF SAID SATURABLE REACTOR AT THE LOWEST EXPECTED MAGNITUDE OF DIRECT CURRENT INPUT TO
Claim 2
Dependent Claim
122 words
AN ELECTRICAL SYSTEM COMPRISING, A CONTROLLED FREQUENCY INVERTER HAVING A RANDOMLY VARYING DIRECT CURRENT INPUT AND AN ALTERNATING CURRENT OUTPUT, MEANS RECTIFYING AND ALTERNATING CURRENT OUTPUT, A SATUABLE REACTOR HAVING A PLURALITY OF WINDINGS, ONE WINDING OF SAID SATURABLE REACTOR BEING CONNECTED TO THE OUTPUT OF SAID RECTIFYING MEANS TO PRODUCE A MAGNETIC FLUX IN ONE DIRECTION IN THE CORE OF SAID SATURABLE REACTOR, MEANS APPLYING A CONSTANT MAGNITUDE DIRECT CURRENT POTENTIAL TO A SECOND WINDING OF SAID SATURABLE REACTOR TO PRODUCE A MAGNETIC FLUX IN OPPOSITION TO THE FLUX PRODUCED BY SAID ONE WINDING, THE FLUX PRODUCED BY SAID SECOND WINDING BEING SUFFICIENT TO SATURATE THE CORE OF SAID SATURABLE REACTOR AT THE LOWEST EXPECTED MAGNITUDE OF DIRECT CURRENT INPUT TO
References Cited (Backward Citations)
FR1190868A
Cited
US2999972A
Cited
US2987664A
Cited
US2968738A
Cited
US3004206A
Cited
US3010062A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |