US3129444A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of producing strong threaded anchorages in workpieces and ferrules for use in such methods
Assignee: General American Transportation Corp
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Filing: 1962-04-02
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Granted: 1964-04-21
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Expires: 1982-04-02
Abstract
No abstract record available.
Inventors
- 👤 Simon S Kahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:04
CPC Classifications
F; F16; F16B; F16B37/00; F16B37/12; F16B37/122; B; B21; B21D; B21D39/00; B21D39/03; Y; Y10; Y10S; Y10S411/00; Y10S411/918; Y10S411/955; Y10S411/965; Y10S411/967; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49833; Y10T29/49908; Y10T29/49938; Y10T29/4994; Y10T29/49945
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
217 words
THE METHOD OF PRODUCING A STRONG THREADED ANCHORAGE IN A WORKPIECE FORMED OF RELATIVELY SOFT METAL, COMPRISING PROVIDING A BORE IN SAID WORKPIECE, PROVIDING A FERRULE FORMED OF RELATIVELY HARD METAL CHARACTERIZED BY PLASTIC FLOW UNDER SWAGING PRESSURE, WHEREIN THE OUTER CASING OF SAID FERRULE HAS BEEN PREHARDENED WITH RESPECT TO THE CORE THEREOF, SECURING SAID FERRULE IN PLACE IN SAID BORE, AND SUBJECTING THE INTERIOR SURFACE OF SAID FERRULE TO SWAGING PRESSURE WITH AN EXTREMELY HARD THREAD-SWAGING MEMBER SO AS SIMULTANEOUSLY TO SWAGE AN INTERNAL THREAD UPON THE INTERIOR SURFACE OF SAID FERRULE AND TO SWAGE AN EXTERNAL THREAD-LIKE STRUCTURE UPON THE EXTERIOR SURFACE OF SAID FERRULE AND TO COMPRESS AN INTERNAL THREADLIKE STRUCTURE UPON SAID WORKPIECE INTERIORLY OF SAID BORE, WHEREIN SAID THREAD-LIKE STRUCTURES ARE COMPLEMENTARY AND SAID EXTERNAL THREAD-LIKE STRUCTURE IS SWAGED INTO INTERLOCKED FRICTIONAL ENGAGEMENT WITH SAID INTERNAL THREADLIKE STRUCTURE SO AS SECURELY TO ANCHOR SAID FERRULE IN PLACE IN SAID BORE, AND WHEREIN THE OUTER CASING OF SAID FERRULE BEING HARDER THAN THE CORE THEREOF MINIMIZES LONGITUDINAL CREEP OF SAID FERRULE IN SAID BORE IN SAID STEP OF SUBJECTING THE INTERIOR SURFACE OF SAID FERRULE TO SWAGING PRESSURE, SAID INTERNAL THREAD BEING ADAPTED TO RECEIVE AND TO ENGAGE A COOPERATING EXTERNAL THREAD CARRIED UPON THE SHANK OF A SCREW, OR THE LIKE.
Claim 2
Independent Claim
217 words
THE METHOD OF PRODUCING A STRONG THREADED ANCHORAGE IN A WORKPIECE FORMED OF RELATIVELY SOFT METAL, COMPRISING PROVIDING A BORE IN SAID WORKPIECE, PROVIDING A FERRULE FORMED OF RELATIVELY HARD METAL CHARACTERIZED BY PLASTIC FLOW UNDER SWAGING PRESSURE, WHEREIN THE OUTER CASING OF SAID FERRULE HAS BEEN PREHARDENED WITH RESPECT TO THE CORE THEREOF, SECURING SAID FERRULE IN PLACE IN SAID BORE, AND SUBJECTING THE INTERIOR SURFACE OF SAID FERRULE TO SWAGING PRESSURE WITH AN EXTREMELY HARD THREAD-SWAGING MEMBER SO AS SIMULTANEOUSLY TO SWAGE AN INTERNAL THREAD UPON THE INTERIOR SURFACE OF SAID FERRULE AND TO SWAGE AN EXTERNAL THREAD-LIKE STRUCTURE UPON THE EXTERIOR SURFACE OF SAID FERRULE AND TO COMPRESS AN INTERNAL THREADLIKE STRUCTURE UPON SAID WORKPIECE INTERIORLY OF SAID BORE, WHEREIN SAID THREAD-LIKE STRUCTURES ARE COMPLEMENTARY AND SAID EXTERNAL THREAD-LIKE STRUCTURE IS SWAGED INTO INTERLOCKED FRICTIONAL ENGAGEMENT WITH SAID INTERNAL THREADLIKE STRUCTURE SO AS SECURELY TO ANCHOR SAID FERRULE IN PLACE IN SAID BORE, AND WHEREIN THE OUTER CASING OF SAID FERRULE BEING HARDER THAN THE CORE THEREOF MINIMIZES LONGITUDINAL CREEP OF SAID FERRULE IN SAID BORE IN SAID STEP OF SUBJECTING THE INTERIOR SURFACE OF SAID FERRULE TO SWAGING PRESSURE, SAID INTERNAL THREAD BEING ADAPTED TO RECEIVE AND TO ENGAGE A COOPERATING EXTERNAL THREAD CARRIED UPON THE SHANK OF A SCREW, OR THE LIKE.
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 |