US3328735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical transformer
Assignee: Allis Chalmers Corp
•
Filing: 1965-03-15
•
Granted: 1967-06-27
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Expires: 1985-03-15
Abstract
No abstract record available.
Inventors
- 👤 Vernon B Honsinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:40
CPC Classifications
H; H01; H01F; H01F38/00; H01F38/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A ROTATABLE MEMBER FOR AN ELECTRIC TRANSFORMER COMPRISING: TWO SETS OF ANNULAR IRON LAMINATIONS MOUNTED ON A SHAFT AND BEING AXIALLY SPACED FROM EACH OTHER; A FIRST SHEET OF MAGNETIC MATERIAL AND A SECOND SHEET OF ELECTRIC CONDUCTING MATERIAL WOUND IN THE FORM OF A HELIX AND POSITIONED BETWEEN SAID SETS, SAID FIRST SHEET PROVIDING A MAGNETIC FLUX LINKAGE BETWEEN SAID SETS OF LAMINATIONS;
Claim 2
Dependent Claim
64 words
A ROTATABLE MEMBER FOR AN ELECTRIC TRANSFORMER COMPRISING: TWO SETS OF ANNULAR IRON LAMINATIONS MOUNTED ON A SHAFT AND BEING AXIALLY SPACED FROM EACH OTHER; A FIRST SHEET OF MAGNETIC MATERIAL AND A SECOND SHEET OF ELECTRIC CONDUCTING MATERIAL WOUND IN THE FORM OF A HELIX AND POSITIONED BETWEEN SAID SETS, SAID FIRST SHEET PROVIDING A MAGNETIC FLUX LINKAGE BETWEEN SAID SETS OF LAMINATIONS;
References Cited (Backward Citations)
US1394901A
Cited
US2053176A
Cited
US2498702A
Cited
US2641682A
Cited
US2716736A
Cited
US2878425A
Cited
US2997567A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-26 | 1970-12-26 | 1971-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-26 | 1974-12-26 | 1975-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-26 | 1978-12-26 | 1979-06-27 | $7700.00 | Window Closed / Lapsed |