Patent US3238480A successfully refreshed from Google Patents.
US3238480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printed circuit electrical windings and inductive apparatus using such windings
Assignee: —
•
Filing: —
•
Granted: 1966-03-01
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Expires: 1983-03-01
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:31
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/34; H01F27/36; H01F27/363
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
A PRINTED CIRCUIT WINDING AND PRINTED SCREEN ARRANGEMENT WHICH IS CAPABLE OF BEING FOLDED TO FORM A FLAT WINDING HAVING A SCREEN ON WITHER SIDE THEREOF COMPRISING A SHEET OF A FLEXIBLE BACKING OF ELECTRICALLY INSULATING MATERIAL, THE FLEXIBLE BACKING COMPRISING ESSENTIALLY THREE SECTIONS ARRANGED IN LINE WITH A FOURTH SECTION PROJECTING AT RIGHT ANGLES FROM THE THIRD SECTION, EACH SAID SECTION BEING FORMED WITH A CENTRAL APERTURE, AND THE THIRD SECTION BEING SLIGHTLY SHORTER IN LENGTH THAN THE FIRST SECTION, THE PRINTED WINDING BEING PRINTED ON ONE SIDE OF THE BACKING AND EXTENDING OVER THE FIRST AND SECOND SECTIONS SURROUNDING THE APERTURE IN THE FIRST SECTION BUT NOT THE APERTURE IN THE SECOND SECTION, THE PRINTED SCREENS BEING PRINTED ON THE SAID ONE SIDE OF THE BACKING AND BEING IN THE FORM OF TWO ELECTRICALLY INTERCONNECTED OPEN CIRCUIT TURNS COVERING SUBSTANTIALLY THE WHOLE SURFACE OF THE THIRD AND FOURTH SECTIONS ABOUT THEIR RESPECTIVE APERTURES.
Claim 2
Dependent Claim
155 words
A PRINTED CIRCUIT WINDING AND PRINTED SCREEN ARRANGEMENT WHICH IS CAPABLE OF BEING FOLDED TO FORM A FLAT WINDING HAVING A SCREEN ON WITHER SIDE THEREOF COMPRISING A SHEET OF A FLEXIBLE BACKING OF ELECTRICALLY INSULATING MATERIAL, THE FLEXIBLE BACKING COMPRISING ESSENTIALLY THREE SECTIONS ARRANGED IN LINE WITH A FOURTH SECTION PROJECTING AT RIGHT ANGLES FROM THE THIRD SECTION, EACH SAID SECTION BEING FORMED WITH A CENTRAL APERTURE, AND THE THIRD SECTION BEING SLIGHTLY SHORTER IN LENGTH THAN THE FIRST SECTION, THE PRINTED WINDING BEING PRINTED ON ONE SIDE OF THE BACKING AND EXTENDING OVER THE FIRST AND SECOND SECTIONS SURROUNDING THE APERTURE IN THE FIRST SECTION BUT NOT THE APERTURE IN THE SECOND SECTION, THE PRINTED SCREENS BEING PRINTED ON THE SAID ONE SIDE OF THE BACKING AND BEING IN THE FORM OF TWO ELECTRICALLY INTERCONNECTED OPEN CIRCUIT TURNS COVERING SUBSTANTIALLY THE WHOLE SURFACE OF THE THIRD AND FOURTH SECTIONS ABOUT THEIR RESPECTIVE APERTURES.
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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |