Patent US3335596A successfully refreshed from Google Patents.
US3335596A
Expired / Lapsed
US
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Methods and apparatus for manufacture of h-section steel having surface projections
Assignee: Fuji Iron and Steel Co Ltd
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Filing: 1964-09-25
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Granted: 1967-08-15
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Expires: 1984-09-25
Abstract
No abstract record available.
Inventors
- 👤 Noda Iknya
- 👤 Kato Kimihiro
- 👤 Yamamoto Akira
- 👤 Okano Katsutoshi
- 👤 Ueta Takashi
- 👤 Minami Hisao
- 👤 Hirano Ryo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:03
CPC Classifications
B; B21; B21B; B21B1/00; B21B1/08; B21B1/088; B21H; B21H8/00; B21B2001/081; B21B45/00; B21B45/02; B21B45/0203; B21B45/0209; B21B2045/0212; B21B45/0215; B21B2045/0221
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
A METHOD OF MANUFACTURING A STEEL H-SECTION INCLUDING A PAIR OF FLANGES INTERCONNECTED BY A WEB AND HAVING PROJECTIONS ON THE OUTER SURFACE OF AT LEAST ONE FLANGE, THE PROJECTIONS BEING UNIFORM IN HEIGHT AND CONFIGURATION, SAID METHOD COMPRISING THE STEPS OF: ROUGH ROLLING A STEEL INGOT TO PRODUCE H-CROSS SECTION BEAM INCLUDING A PAIR OF FLANGES INTERCONNECTED BY A WEB AT JUNCTURES BETWEEN THE WEB AND THE FLANGES; DURING THE ROUGH ROLLING, SUBJECTING THE WEB TO TREATMENT TO INCREASE ITS RESISTANCE TO DEFORMATION UNDER PRESSURE APPLIED TO THE OUTER SURFACES OF THE FLANGES; AND FINISH ROLLING THE ROUGH-ROLLED H-BEAM USING ROLLS PRESSING AGAINST THE OUTER SURFACES OF THE FLANGES AND AT LEAST ONE HAVING A ROLLING SURFACE RECESSED TO FORM SAID PROJECTIONS; THE INCREASED RESISTANCE TO DEFORMATION OF THE WEB ASSURING THOSE PROJECTIONS ADJACENT A JUNCTURE OF THE WEB WITH THE FLANGES BEING UNIFORM IN HEIGHT AND CONFIGURATION WITH THE REMAINDER OF THE PROJECTIONS FORMED ON THE SAME SURFACE.
Claim 2
Independent Claim
160 words
A METHOD OF MANUFACTURING A STEEL H-SECTION INCLUDING A PAIR OF FLANGES INTERCONNECTED BY A WEB AND HAVING PROJECTIONS ON THE OUTER SURFACE OF AT LEAST ONE FLANGE, THE PROJECTIONS BEING UNIFORM IN HEIGHT AND CONFIGURATION, SAID METHOD COMPRISING THE STEPS OF: ROUGH ROLLING A STEEL INGOT TO PRODUCE H-CROSS SECTION BEAM INCLUDING A PAIR OF FLANGES INTERCONNECTED BY A WEB AT JUNCTURES BETWEEN THE WEB AND THE FLANGES; DURING THE ROUGH ROLLING, SUBJECTING THE WEB TO TREATMENT TO INCREASE ITS RESISTANCE TO DEFORMATION UNDER PRESSURE APPLIED TO THE OUTER SURFACES OF THE FLANGES; AND FINISH ROLLING THE ROUGH-ROLLED H-BEAM USING ROLLS PRESSING AGAINST THE OUTER SURFACES OF THE FLANGES AND AT LEAST ONE HAVING A ROLLING SURFACE RECESSED TO FORM SAID PROJECTIONS; THE INCREASED RESISTANCE TO DEFORMATION OF THE WEB ASSURING THOSE PROJECTIONS ADJACENT A JUNCTURE OF THE WEB WITH THE FLANGES BEING UNIFORM IN HEIGHT AND CONFIGURATION WITH THE REMAINDER OF THE PROJECTIONS FORMED ON THE SAME SURFACE.
References Cited (Backward Citations)
US1856898A
Cited
US1812246A
Cited
US1812248A
Cited
US1882956A
Cited
US2047001A
Cited
US2277725A
Cited
US2782487A
Cited
US3165948A
Cited
US3251213A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-14 | 1971-02-13 | 1971-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-14 | 1975-02-13 | 1975-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-14 | 1979-02-13 | 1979-08-15 | $7700.00 | Window Closed / Lapsed |