US3110086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coining structural parts
Assignee: Douglas Aircraft Co Inc
•
Filing: 1960-02-15
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Granted: 1963-11-12
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Expires: 1980-02-15
Abstract
No abstract record available.
Inventors
- 👤 Phillips Austin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:46
CPC Classifications
B; B23; B23P; B23P9/00; B23P9/02; B23P9/025; B21; B21D; B21D28/00; B21D28/24; B21D28/243; E; E04; E04C; E04C3/00; E04C3/02; E04C3/04; E04C3/08; E04C3/083; E04C2003/0404; E04C2003/0408; E04C2003/0421; E04C2003/0426; E04C2003/0434; E04C2003/0443; E04C2003/0452; E04C2003/046; Y; Y10; Y10S; Y10S29/00; Y10S29/049; Y10T; Y10T29/00; Y10T29/49; Y10T29/49616; Y10T29/49618; Y10T29/49718; Y10T29/49748
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A METHOD OF NEUTRALIZING FATIGUE-CAUSING STRESS CONCENTRATION IN THE WALL OF A DISCONTINUITY IN A STRUCTURAL MEMBER, COMPRISING: GROOVING THE STRUCTURAL MEMBER ON ITS FACE ADJACENT SAID WALL BY COMPRESSIVELY DISPLACING THE MATERIAL OF THE STRUCTURAL MEMBER TOWARD THE PERIPHERY OF SAID WALL; AND CONTINUING SAID DISPLACEMENT TO AN EXTENT SUFFICIENT TO CREATE A FATIGUE RESISTANT RESIDUAL RADIAL COMPRESSIVE STRESS IN THE AREA BETWEEN THE INNER PERIPHERY OF THE GROOVE AND THE EDGE OF THE DISCONTINUITY, SAID STRESS BEING DIRECTED TOWARD THE CENTER OF SAID DISCONTINUITY.
Claim 2
Independent Claim
86 words
A METHOD OF NEUTRALIZING FATIGUE-CAUSING STRESS CONCENTRATION IN THE WALL OF A DISCONTINUITY IN A STRUCTURAL MEMBER, COMPRISING: GROOVING THE STRUCTURAL MEMBER ON ITS FACE ADJACENT SAID WALL BY COMPRESSIVELY DISPLACING THE MATERIAL OF THE STRUCTURAL MEMBER TOWARD THE PERIPHERY OF SAID WALL; AND CONTINUING SAID DISPLACEMENT TO AN EXTENT SUFFICIENT TO CREATE A FATIGUE RESISTANT RESIDUAL RADIAL COMPRESSIVE STRESS IN THE AREA BETWEEN THE INNER PERIPHERY OF THE GROOVE AND THE EDGE OF THE DISCONTINUITY, SAID STRESS BEING DIRECTED TOWARD THE CENTER OF SAID DISCONTINUITY.
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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) | 1966-11-11 | 1967-05-13 | 1967-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-11 | 1971-05-13 | 1971-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-11 | 1975-05-13 | 1975-11-12 | $7700.00 | Window Closed / Lapsed |