Patent US4518029A successfully refreshed from Google Patents.
Patent US3319948A successfully refreshed from Google Patents.
US3319948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Annealing box for transformer cores
Assignee: HK Porter Co Inc
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Filing: 1966-08-15
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Granted: 1967-05-16
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Expires: 1986-08-15
Abstract
No abstract record available.
Inventors
- 👤 Olsen Willy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:50
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/24; H01F27/245; H01F27/2455; H01F41/00; H01F41/02; H01F41/0206
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
AN ANNEALING BOX FOR HOLDING IN DESIRED FORM THE INTERNESTED PLURAL TURNS OF A CENTRALLY WINDOWED RECTANGULARLY FORMED WOUND TRANSFORMER CORE DURING ANNEALING, COMPRISING IN COMBINATION, A PAIR OF IDENTICAL CENTRALLY APERTURED RECTANGULAR RIGID FRAME MEMBERS EACH PROVIDED WITH PERIPHERALLY EXTENDING SIDE FLANGES TURNED AT RIGHT ANGLES TO THE PRINCIPAL PLANE OF THE FRAME MEMBER, A PAIR OF RIGID SIDE PLATES OF LENGTH LESS THAN THAT OF THE FORMED CORE LENGTH AND OF A HEIGHT SUBSTANTIALLY THE SAME AS THAT OF THE CORE, A PAIR OF RIGID END PLATES OF LENGTH LESS THAN THAT OF THE WIDTH OF THE FORMED CORE AND OF A HEIGHT EQUAL TO THAT OF THE SAID SIDE PLATES, THE BOX STRUCTURE BEING FORMED BY THE DISPOSITION OF THE SAID SIDE AND END PLATES IN FLAT SURFACE CONTACT WITH THE
Claim 2
Dependent Claim
134 words
AN ANNEALING BOX FOR HOLDING IN DESIRED FORM THE INTERNESTED PLURAL TURNS OF A CENTRALLY WINDOWED RECTANGULARLY FORMED WOUND TRANSFORMER CORE DURING ANNEALING, COMPRISING IN COMBINATION, A PAIR OF IDENTICAL CENTRALLY APERTURED RECTANGULAR RIGID FRAME MEMBERS EACH PROVIDED WITH PERIPHERALLY EXTENDING SIDE FLANGES TURNED AT RIGHT ANGLES TO THE PRINCIPAL PLANE OF THE FRAME MEMBER, A PAIR OF RIGID SIDE PLATES OF LENGTH LESS THAN THAT OF THE FORMED CORE LENGTH AND OF A HEIGHT SUBSTANTIALLY THE SAME AS THAT OF THE CORE, A PAIR OF RIGID END PLATES OF LENGTH LESS THAN THAT OF THE WIDTH OF THE FORMED CORE AND OF A HEIGHT EQUAL TO THAT OF THE SAID SIDE PLATES, THE BOX STRUCTURE BEING FORMED BY THE DISPOSITION OF THE SAID SIDE AND END PLATES IN FLAT SURFACE CONTACT WITH THE
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) | 1970-05-15 | 1970-11-14 | 1971-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-15 | 1974-11-14 | 1975-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-15 | 1978-11-14 | 1979-05-16 | $7700.00 | Window Closed / Lapsed |