Patent US3340489A successfully refreshed from Google Patents.
US3340489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical transformer with cooling means
Assignee: Kaiser Aluminum and Chemical Corp
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Filing: 1964-09-30
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Granted: 1967-09-05
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Expires: 1984-09-30
Abstract
No abstract record available.
Inventors
- 👤 Thomas E Bastis
- 👤 Howard L Bridges
- 👤 Gillette N Houck
- 👤 William T Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:25
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/08; H01F27/085; B; B01; B01J; B01J21/00; B01J21/02; B01J27/00; B01J27/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
AN ELECTRICAL POWER TRANSFORMER COMPRISING A PLURALITY OF COMPLEMENTARY SECTIONS ASSEMBLED AND MATED TOGETHER TO FORM A CLOSED MAGNETIC CORE PROVIDED WITH A CENTRAL OPENING THERETHROUGH FOR RECEIVING THE PRIMARY AND SECONDARY WINDINGS OF THE TRANSFORMER, THE OPPOSING AND MATING ENDS OF THE COMPLEMENTARY AND MATED SECTIONS OF THE CORE BEING LOCATED IN PLANES ARRANGED SUBSTANTIALLY TANGENTIAL TO THE CENTRAL OPENING OF THE CORE; PIN TYPE MEANS FOR ALIGNING AND HOLDING SAID CORE SECTIONS TOGETHER; A SUBSTANTIALLY TUBULAR AND SECTIONALIZED CASING SUBSTANTIALLY SURROUNDING AND ENCLOSING THE CORE, SAID CASING BEING PROVIDED WITH RADIALLY DISPOSED FLANGE ELEMENTS, A PRIMARY WINDING DISPOSED ABOUT THE ADJACENT TO SAID CASING, A SECOND CASING ALSO PROVIDED WITH RADIALLY DISPOSED FLANGE ELEMENTS AND CLEARANCE SLOTS THROUGH WHICH THE FLANGE ELEMENTS OF THE FIRST CASING EXTEND AND A SECONDARY WINDING DISPOSED ABOUT AND ADJACENT TO THE SECOND CASING.
Claim 2
Dependent Claim
141 words
AN ELECTRICAL POWER TRANSFORMER COMPRISING A PLURALITY OF COMPLEMENTARY SECTIONS ASSEMBLED AND MATED TOGETHER TO FORM A CLOSED MAGNETIC CORE PROVIDED WITH A CENTRAL OPENING THERETHROUGH FOR RECEIVING THE PRIMARY AND SECONDARY WINDINGS OF THE TRANSFORMER, THE OPPOSING AND MATING ENDS OF THE COMPLEMENTARY AND MATED SECTIONS OF THE CORE BEING LOCATED IN PLANES ARRANGED SUBSTANTIALLY TANGENTIAL TO THE CENTRAL OPENING OF THE CORE; PIN TYPE MEANS FOR ALIGNING AND HOLDING SAID CORE SECTIONS TOGETHER; A SUBSTANTIALLY TUBULAR AND SECTIONALIZED CASING SUBSTANTIALLY SURROUNDING AND ENCLOSING THE CORE, SAID CASING BEING PROVIDED WITH RADIALLY DISPOSED FLANGE ELEMENTS, A PRIMARY WINDING DISPOSED ABOUT THE ADJACENT TO SAID CASING, A SECOND CASING ALSO PROVIDED WITH RADIALLY DISPOSED FLANGE ELEMENTS AND CLEARANCE SLOTS THROUGH WHICH THE FLANGE ELEMENTS OF THE FIRST CASING EXTEND AND A SECONDARY WINDING DISPOSED ABOUT AND ADJACENT TO THE SECOND CASING.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |