US3078429A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Current-limiting reactors for fluorescent tubes or the like
Assignee: Individual
•
Filing: 1958-12-22
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Granted: 1963-02-19
•
Expires: 1978-12-22
Abstract
No abstract record available.
Inventors
- 👤 Wiesner Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:59
CPC Classifications
H; H01; H01F; H01F37/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A CURRENT LIMITING BLOCK-LIKE REACTOR FOR FLUORESCENT TUBES, COMPRISING: A CORE MADE OF LAMINATED STREET IRON; AT LEAST ONE WINDING DISPOSED ON SAID CORE AND HAVING WINDING HEADS; A TUBULAR SHELL MADE OF LAMINATED SHEET IRON FOR RECEIVING SAID CORE AND SAID WINDING; WEDGES DISPOSED BETWEEN SAID WINDING HEADS AND SAID CORE FOR FIXING THE LATTER TO SAID WINDINGS, SAID WEDGES BEING SO SHAPED THAT THEIR LENGTH IS SUFFICIENT TO MAKE THEM IN CONTIGUOUS RELATIONSHIP WITH SAID SHELL AND SAID CORE; AND INSULATING MATERIAL INTERPOSED BETWEEN SAID SHELL AND SAID IRON CORE WITH WINDINGS FOR ENGAGEMENT OF CORE AND SHELL AND DEFINING AN AIR GAP WHICH IS PASSED THROUGH BY A MAGNETIC FLUX WHEN THE REACTOR IS IN OPERATION, SAID WEDGES AND SAID INSULATING MATERIAL HOLDING SAID REACTOR TOGETHER.
Claim 2
Dependent Claim
129 words
A CURRENT LIMITING BLOCK-LIKE REACTOR FOR FLUORESCENT TUBES, COMPRISING: A CORE MADE OF LAMINATED STREET IRON; AT LEAST ONE WINDING DISPOSED ON SAID CORE AND HAVING WINDING HEADS; A TUBULAR SHELL MADE OF LAMINATED SHEET IRON FOR RECEIVING SAID CORE AND SAID WINDING; WEDGES DISPOSED BETWEEN SAID WINDING HEADS AND SAID CORE FOR FIXING THE LATTER TO SAID WINDINGS, SAID WEDGES BEING SO SHAPED THAT THEIR LENGTH IS SUFFICIENT TO MAKE THEM IN CONTIGUOUS RELATIONSHIP WITH SAID SHELL AND SAID CORE; AND INSULATING MATERIAL INTERPOSED BETWEEN SAID SHELL AND SAID IRON CORE WITH WINDINGS FOR ENGAGEMENT OF CORE AND SHELL AND DEFINING AN AIR GAP WHICH IS PASSED THROUGH BY A MAGNETIC FLUX WHEN THE REACTOR IS IN OPERATION, SAID WEDGES AND SAID INSULATING MATERIAL HOLDING SAID REACTOR TOGETHER.
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) | 1966-02-18 | 1966-08-20 | 1967-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-18 | 1970-08-20 | 1971-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-18 | 1974-08-20 | 1975-02-19 | $7700.00 | Window Closed / Lapsed |