US3157274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of controlling residual stresses in materials during working
Assignee: LA SALIE STEEL Co
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Filing: 1960-10-10
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Granted: 1964-11-17
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Expires: 1980-10-10
Abstract
No abstract record available.
Inventors
- 👤 Frank A Kyle
- 👤 Maurice N Landis
- 👤 Thomas A Kelly
- 👤 Elliot S Nachtman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:42
CPC Classifications
B; B21; B21C; B21C3/00; B21C3/02; B21C3/04; B21C1/00; Y; Y10; Y10S; Y10S72/00; Y10S72/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
IN THE PLASTIC DEFORMATION AND REDUCTION IN CROSSSECTIONAL AREA OF A MATERIAL WHICH STRAIN HARDENS, THE STEPS OF TAKING A MAJOR REDUCTION IN THE MATERIAL INDEPENDENT OF THE RATE OF REDUCTION AND IN A FINAL REDUCTION STEP FOLLOWING THE MAJOR REDUCTION, TAKING A REDUCTION AT A PREDETERMINED RATE CORRESPONDING TO THE SLOPE OF THE HYPOTENUSE OF A RIGHT TRIANGLE HAVING AN INCLUDED ANGLE OF 0*17'' TO 3*30 FOR A MINIMUM LENGTH TO CAUSE PLASTIC DEFORMATION TO PENETRATE THROUGH THE CROSS-SECTION OF THE MATERIAL AT THE RATE OF REDUCTION.
Claim 2
Dependent Claim
88 words
IN THE PLASTIC DEFORMATION AND REDUCTION IN CROSSSECTIONAL AREA OF A MATERIAL WHICH STRAIN HARDENS, THE STEPS OF TAKING A MAJOR REDUCTION IN THE MATERIAL INDEPENDENT OF THE RATE OF REDUCTION AND IN A FINAL REDUCTION STEP FOLLOWING THE MAJOR REDUCTION, TAKING A REDUCTION AT A PREDETERMINED RATE CORRESPONDING TO THE SLOPE OF THE HYPOTENUSE OF A RIGHT TRIANGLE HAVING AN INCLUDED ANGLE OF 0*17'' TO 3*30 FOR A MINIMUM LENGTH TO CAUSE PLASTIC DEFORMATION TO PENETRATE THROUGH THE CROSS-SECTION OF THE MATERIAL AT THE RATE OF REDUCTION.
References Cited (Backward Citations)
NL56974C
Cited
US2589881A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-17 | 1968-05-18 | 1968-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-17 | 1972-05-18 | 1972-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-17 | 1976-05-18 | 1976-11-17 | $7700.00 | Window Closed / Lapsed |