US3017697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods for differential plastic deformation of metal and other plastic materials
Assignee: Individual
•
Filing: 1955-12-06
•
Granted: 1962-01-23
•
Expires: 1975-12-06
Abstract
No abstract record available.
Inventors
- 👤 Tadeusz W Wlodek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:58
CPC Classifications
C; C21; C21D; C21D7/00; C21D7/02; C21D7/04; Y; Y10; Y10S; Y10S72/00; Y10S72/703
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A METHOD OF IMPROVING THE FATIGUE RESISTANCE OF STRUCTURAL METAL MEMBERS HAVING A HEAT TREATED PORTION COMPRISING SUBJECTING AT LEAST ADJOINING PARTS OF THE HEAT TREATED AND UNTREATED PORTIONS OF SAID MEMBERS TO PRESSURES BEYOND THE ELASTIC LIMIT OF SAID PORTIONS AND AT SPACED INTERVALS SUFFICIENT TO PROVIDE PLASTICALLY DEFORMED DEPRESSIONS BETWEEN ONE-THOUSANDTH OF AN INCH AND ONESIXTEENTH OF AN INCH DEEP, SAID INTERVALS BEING INTERSPACED WITH SUBSTANTIALLY UNDEFORMED PORTIONS TO PROVIDE LOCKEDIN RESIDUAL STRESSES WHICH RESIST FATIGUE, THE DISTANCE BETWEEN SAID DEPRESSIONS BEING BETWEEN ABOUT ONE-EIGHT OF AN INCH AND ABOUT ONE-SIXTY-FOURTH OF AN INCH, SAID DISTANCE BEING GREATER THAN THE DEPTH OF SAID DEPRESSIONS.
Claim 2
Independent Claim
106 words
A METHOD OF IMPROVING THE FATIGUE RESISTANCE OF STRUCTURAL METAL MEMBERS HAVING A HEAT TREATED PORTION COMPRISING SUBJECTING AT LEAST ADJOINING PARTS OF THE HEAT TREATED AND UNTREATED PORTIONS OF SAID MEMBERS TO PRESSURES BEYOND THE ELASTIC LIMIT OF SAID PORTIONS AND AT SPACED INTERVALS SUFFICIENT TO PROVIDE PLASTICALLY DEFORMED DEPRESSIONS BETWEEN ONE-THOUSANDTH OF AN INCH AND ONESIXTEENTH OF AN INCH DEEP, SAID INTERVALS BEING INTERSPACED WITH SUBSTANTIALLY UNDEFORMED PORTIONS TO PROVIDE LOCKEDIN RESIDUAL STRESSES WHICH RESIST FATIGUE, THE DISTANCE BETWEEN SAID DEPRESSIONS BEING BETWEEN ABOUT ONE-EIGHT OF AN INCH AND ABOUT ONE-SIXTY-FOURTH OF AN INCH, SAID DISTANCE BEING GREATER THAN THE DEPTH OF SAID DEPRESSIONS.
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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) | 1965-01-22 | 1965-07-24 | 1966-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-22 | 1969-07-24 | 1970-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-22 | 1973-07-24 | 1974-01-23 | $7700.00 | Window Closed / Lapsed |