US3011928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for heat treating hot rolled steel rods
Assignee: Siemens Industry Inc
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Filing: 1960-01-18
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Granted: 1961-12-05
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Expires: 1980-01-18
Abstract
No abstract record available.
Inventors
- 👤 Kopec J Benedict
- 👤 William A Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:38
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/52; C21D9/525; B; B21; B21B; B21B45/00; B21B45/02; B21B45/0203; B21B45/0209; B21B45/0215; B21B45/0224
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
100 words
A METHOD OF HEAT TREATING HOT ROLLED HIGH CARBON STEEL ROD, COMPRISING SUBJECTING THE ROD TO A WATER QUENCHING INTERMEDIATE THE ROLLS AND A COILING DEVICE RAPIDLY TO COOL THE ROD BUT WITHOUT PRODUCING SUBSTANTIALLY DIFFERENT MICROSTRUCTURES AT THE OUTSIDE AND CENTER OF THE ROD AND WHEREBY THE SURFACE TEMPERATURE OF THE ROD ENTERING SAID COILING DEVICE LIES IN THE RANGE OF ABOUT 13501450*F., AND SPRAYING ATOMIZED WATER ON THE ROD WHILE SAID ROD IS BEING COILED ON SAID DEVICE TO REDUCE THE TEMPERATURE THROUGHOUT THE CROSS SECTION OF THE ROD TO VALUES LYING WITHIN THE RANGE OF ABOUT 900-1300*F.
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) | 1964-12-04 | 1965-06-05 | 1965-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-04 | 1969-06-05 | 1969-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-04 | 1973-06-05 | 1973-12-05 | $7700.00 | Window Closed / Lapsed |