US3130088A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal-flattening of metallic strip
Assignee: Armco Inc
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Filing: 1958-12-31
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Granted: 1964-04-21
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Expires: 1978-12-31
Abstract
No abstract record available.
Inventors
- 👤 Lowell L Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:01
CPC Classifications
B; B21; B21D; B21D3/00; B21D3/02; B21D3/05; B21D1/00; B21D1/02; C; C21; C21D; C21D7/00; C21D8/00; C21D8/02; C21D8/0247; C21D8/0252; C21D8/0221; C21D8/0242; C21D8/12; C21D8/1216; C21D8/1238; C21D8/1244; C21D8/125
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A PROCESS FOR INCREASING THE FLATNESS OF STEEL STRIP WHICH, IN OTHERWISE FINISHED FORM, IS CHARACTERIZED BY A LACK OF FLATNESS, WHICH COMPRISES BRINGING THE MATERIAL TO A TEMPERATURE OF AT LEAST 900*F. AT WHICH IT IS SOFT ENOUGH FOR THE RELIEF OF STRAINS, ALTERNATELY PASSING THE STRIP OVER AND UNDER A PLURALITY OF SPACED APART FLATTENING ROLLS SOME OF WHICH AT LEAST ARE ARRANGED TO PENETRATE THE PASS LINE OF THE STRIP BY A DISTANCE NO GREATER THAN THE DIAMETER OF SAID ROLLS, WHILE AT THE SAME TIME SUBJECTING THE
Claim 2
Dependent Claim
91 words
A PROCESS FOR INCREASING THE FLATNESS OF STEEL STRIP WHICH, IN OTHERWISE FINISHED FORM, IS CHARACTERIZED BY A LACK OF FLATNESS, WHICH COMPRISES BRINGING THE MATERIAL TO A TEMPERATURE OF AT LEAST 900*F. AT WHICH IT IS SOFT ENOUGH FOR THE RELIEF OF STRAINS, ALTERNATELY PASSING THE STRIP OVER AND UNDER A PLURALITY OF SPACED APART FLATTENING ROLLS SOME OF WHICH AT LEAST ARE ARRANGED TO PENETRATE THE PASS LINE OF THE STRIP BY A DISTANCE NO GREATER THAN THE DIAMETER OF SAID ROLLS, WHILE AT THE SAME TIME SUBJECTING 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) | 1967-04-21 | 1967-10-21 | 1968-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-21 | 1971-10-21 | 1972-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-21 | 1975-10-21 | 1976-04-21 | $7700.00 | Window Closed / Lapsed |