US3213727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making core pieces
Assignee: Allegheny Ludlum Steel Corp
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Filing: 1963-10-25
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Granted: 1965-10-26
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Expires: 1983-10-25
Abstract
No abstract record available.
Inventors
- 👤 Donald O Schwennesen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:07
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/02; H01F41/0206; H01F41/0233; H01F27/00; H01F27/24; H01F27/245; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49075; Y10T29/49078; Y10T83/00; Y10T83/04; Y10T83/0491
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
344 words
THE METHOD OF PREPARING TRANSFORMER CORE PIECES FROM A CONTINUOUS STRIP WHICH COMPRISES THE STEPS OF, CUTTING A FIRST PAIR OF OPPOSED COMPLEMENTARY E-SHAPED BODIES OF PREDETERMINED SIZE HAVING A BASE AND SPACED LEGS OF EQUAL LENGTH EXTENDING OUTWARDLY THEREFROM LENGTHWISE OF THE STRIP, EACH OF THE OUTER LEGS OF EACH BODY HAVING A WIDTH EQUAL TO ONE-HALF THE WIDTH OF THE CENTER LEG THEREOF AND EQUAL TO THE WIDTH OF THE BASE, THE BASE OF EACH BODY EXTENDING CROSSWISE OF THE STRIP AND TERMINATING A DISTANCE FROM EACH EDGE THEREOF EQUAL TO SLIGHTLY MORE THAN THE WIDTH OF THE BASE, THE LEGS OF ONE OF SAID BODIES TERMINATING A DISTANCE FROM THE COMPLEMENTARY LEGS OF THE OTHER OF SAID BODIES EQUAL TO THE WIDTH OF THE CENTER LEGS OF SAID BODIES, THE CUTTING OF SAID BODIES LEAVING A SECTION EXTENDING CROSSWISE OF THE STRIP AND LEAVING EXTENSIONS ON SAID SECTION FROM BETWEEN THE LEGS OF SAID BODIES, CUTTING SAID EXTENSIONS AND A CENTRAL SQUARE PORTION FROM SAID SECTION OF THE STIP TO LEAVE OPPOSED EXTENSIONS ON AND CROSSWISE OF THE STRIP TO FORM AN H-SHAPED OPENING IN AND ACROSS THE STRIP, SAID OPPOSED EXTENSIONS HAVING A WIDTH EQUAL TO THE WIDTH OF THE CENTER LEG OF SAID FITST PAIR OF BODIES, AND THEN SIMULTANEOULY CUTTING THE STRIP AT THE OPPOSITE ENDS OF THE H-SHAPED OPENING TO FORM A SECOND PAIR OF OPPOSED AND COMPLEMENTARY E-SHAPED BODIES HAVING A BASE LENGTHWISE OF THE STRIP AND OF THE SAME SIZE AS THE BASE OF SAID FIRST PAIR OF BODIES AND LEGS OF EQUAL LENGTH CROSSWISE OF THE STRIP AND OF THE SAME WIDTH BUT LONGER THAN THE LEGS OF SAID FIRST PAIR OF BODIES, THE CENTER LEG OF SAID SECOND PARI OF BOSIED COMPRISING THE EXTENSION OF THE H-SHAPED OPENING AND THE OUTER LEGS OF SAID SECOND PAIR OF BODIES EXTENDING ALONG AND BEING INTEGRAL WITH THE OUTER EDGES OF SAID H-SHAPED OPENING, THE CUTTING OF SAID SECOND PAIR OF BODIES LEAVING A NARROW CONNECTING STRIP ALONG EACH OF THE OUTER EDGES OF THE STRIP.
Claim 2
Independent Claim
344 words
THE METHOD OF PREPARING TRANSFORMER CORE PIECES FROM A CONTINUOUS STRIP WHICH COMPRISES THE STEPS OF, CUTTING A FIRST PAIR OF OPPOSED COMPLEMENTARY E-SHAPED BODIES OF PREDETERMINED SIZE HAVING A BASE AND SPACED LEGS OF EQUAL LENGTH EXTENDING OUTWARDLY THEREFROM LENGTHWISE OF THE STRIP, EACH OF THE OUTER LEGS OF EACH BODY HAVING A WIDTH EQUAL TO ONE-HALF THE WIDTH OF THE CENTER LEG THEREOF AND EQUAL TO THE WIDTH OF THE BASE, THE BASE OF EACH BODY EXTENDING CROSSWISE OF THE STRIP AND TERMINATING A DISTANCE FROM EACH EDGE THEREOF EQUAL TO SLIGHTLY MORE THAN THE WIDTH OF THE BASE, THE LEGS OF ONE OF SAID BODIES TERMINATING A DISTANCE FROM THE COMPLEMENTARY LEGS OF THE OTHER OF SAID BODIES EQUAL TO THE WIDTH OF THE CENTER LEGS OF SAID BODIES, THE CUTTING OF SAID BODIES LEAVING A SECTION EXTENDING CROSSWISE OF THE STRIP AND LEAVING EXTENSIONS ON SAID SECTION FROM BETWEEN THE LEGS OF SAID BODIES, CUTTING SAID EXTENSIONS AND A CENTRAL SQUARE PORTION FROM SAID SECTION OF THE STIP TO LEAVE OPPOSED EXTENSIONS ON AND CROSSWISE OF THE STRIP TO FORM AN H-SHAPED OPENING IN AND ACROSS THE STRIP, SAID OPPOSED EXTENSIONS HAVING A WIDTH EQUAL TO THE WIDTH OF THE CENTER LEG OF SAID FITST PAIR OF BODIES, AND THEN SIMULTANEOULY CUTTING THE STRIP AT THE OPPOSITE ENDS OF THE H-SHAPED OPENING TO FORM A SECOND PAIR OF OPPOSED AND COMPLEMENTARY E-SHAPED BODIES HAVING A BASE LENGTHWISE OF THE STRIP AND OF THE SAME SIZE AS THE BASE OF SAID FIRST PAIR OF BODIES AND LEGS OF EQUAL LENGTH CROSSWISE OF THE STRIP AND OF THE SAME WIDTH BUT LONGER THAN THE LEGS OF SAID FIRST PAIR OF BODIES, THE CENTER LEG OF SAID SECOND PARI OF BOSIED COMPRISING THE EXTENSION OF THE H-SHAPED OPENING AND THE OUTER LEGS OF SAID SECOND PAIR OF BODIES EXTENDING ALONG AND BEING INTEGRAL WITH THE OUTER EDGES OF SAID H-SHAPED OPENING, THE CUTTING OF SAID SECOND PAIR OF BODIES LEAVING A NARROW CONNECTING STRIP ALONG EACH OF THE OUTER EDGES OF THE STRIP.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |