Patent US5160997A successfully refreshed from Google Patents.
US3789641A
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US
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Method of lubricating a hot steel workpiece prior to hot rolling
Assignee: United States Steel Corp
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Filing: 1972-11-13
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Granted: 1974-02-05
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Expires: 1992-11-13
Abstract
Abstract A method of lubricating a hot steel workpiece in the process of hot rolling wherein an undiluted lubricating oil is atomized and sprayed onto the hot steel surface. In order to prevent the oil from flashing and burning upon contact with the hot steel surface, the atomized oil particles are maintained within the range of about 150 to 250 microns in size.
Inventors
- 👤 W Miller
- 👤 R Polinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:22
CPC Classifications
F; F16; F16N; F16N7/00; F16N7/30; F16N7/32; F16N7/34; B; B21; B21B; B21B45/00; B21B45/02; B21B45/0239; B21B45/0245; B21B45/0248; B21B45/0251; B21B45/0203; B21B45/0209; B21B45/0215; B21B45/0233
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A method of lubricating a steel workpiece in the process of hot rolling which comprises heating the steel workpiece to a temperature above about 1,600*F, atomizing an undiluted lubricating oil to form particles thereof within the size range of about 150 to 250 microns, and spraying the atomized lubricating oil directly onto the hot workpiece surface.
Claim 2
Independent Claim
56 words
A method of lubricating a steel workpiece in the process of hot rolling which comprises heating the steel workpiece to a temperature above about 1,600*F, atomizing an undiluted lubricating oil to form particles thereof within the size range of about 150 to 250 microns, and spraying the atomized lubricating oil directly onto the hot workpiece surface.
References Cited (Backward Citations)
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US3208253A
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US3523437A
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US3605473A
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US3648497A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |