US3613319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal rolling work roll and method of making same
Assignee: NIPPON KOKAN MIZUE IRON WORKS
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Filing: 1970-03-02
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Granted: 1971-10-19
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Expires: 1990-03-02
Abstract
Abstract A WORK ROLL FOR ROLLING LOW CARBON STEEL OR THE LIKE HAS A SURFACE WHICH IS DULL FINISHED BY GRINDING WITH A #40 OR LESS ROLL GRINDER TO FORM CIRCUMFERENTIALLY ORIENTED IMPRESSIONS ON THE SURFACE OF THE WORK ROLL. THESE WORK ROLLS IMPART SURFACE ROUGHNESSES AND QUALITIES TO THE ROLLED STEEL STRIP WHEREBY THE ROUGHNESS OF THE SURFACE IN THE DIRECTION TRANSVERSE TO ROLLING IS GREATER THAN THE ROUGHNESS IN THE DIRECTION OF STRIP ROLLING, TO THEREBY REDUCE STICKING TENDENCIES, IMPROVE THE SURFACE LUSTER, AND IMPROVE MANUFACTURING ECONOMIES.
Inventors
- 👤 Shojiro Takimura
- 👤 Hiroshi Kuawamoto
- 👤 Tomeji Doi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:05
CPC Classifications
B; B21; B21B; B21B27/00; B21B27/005; B21B2267/00; B21B2267/10; Y; Y10; Y10S; Y10S72/00; Y10S72/703; Y10T; Y10T29/00; Y10T29/49; Y10T29/49544; Y10T29/4956
Claims Analysis
Total Claims: 0
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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) | 1974-10-18 | 1975-04-19 | 1975-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-18 | 1979-04-19 | 1979-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-18 | 1983-04-19 | 1983-10-19 | $7700.00 | Window Closed / Lapsed |