US3193858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of producing strong threaded anchorages
Assignee: General American Transportation Corp
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Filing: 1961-03-24
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Granted: 1965-07-13
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Expires: 1981-03-24
Abstract
No abstract record available.
Inventors
- 👤 Simon S Kahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:49
CPC Classifications
F; F16; F16B; F16B37/00; F16B37/12; F16B37/122; Y; Y10; Y10S; Y10S411/00; Y10S411/955; Y10S411/965; Y10S411/969; Y10T; Y10T29/00; Y10T29/49; Y10T29/49718; Y10T29/49732; Y10T29/49739; Y10T29/49741; Y10T29/49826; Y10T29/49881; Y10T29/49908; Y10T29/49938; Y10T29/4994
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
203 words
THE METHOD OF PRODUCING A STRONG THREADED ANCHORAGE IN A WORKPIECE FORMED OF RELATIVELY HARD METAL, COMPRISING PROVIDING AN INTERNAL THREAD-LIKE STRUCTURE UPON SAID WORKPIECE INTERIORLY OF A SUBSTANTIALLY CYLINDRICAL BORE FORMED THEREIN, PROVIDING A FERRULE FORMED OF RELATIVELY SOFT METAL CHARACTERIZED BY PLASTIC FLOW UNDER SWAGING PRESSURE AND HAVING A SUBSTANTIALLY CYLINDRICAL OPENING THEREIN, FRICTIONALLY SECURING SAID FERRULE IN PLACE IN SAID BORE, AND SUBJECTING THE INTERIOR SURFACE OF SAID FERRULE TO SWAGING PRESSURE WITH AN EXTREMELY HARD THREADSWAGING 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, WHEREIN SAID THREAD-LIKE STRUCTURES ARE COMPLEMENTARY AND SAID EXTERNAL THREAD-LIKE STRUCTURE IS SWAGED INTO INTERLOCKED FRICTIONAL ENGAGEMENT WITH SAID INTERNAL THREAD-LIKE STRUCTURE SO AS SECURELY TO ANCHOR SAID FERRULE IN PLACE IN SAID BORE, SAID INTERNAL THREAD HAVING A SUBSTANTIALLY CONSTANT MAJOR DIAMETER THAT IS GREATER THAN THE INITIAL DIAMETER OF SAID OPENING AND A SUBSTANTIALLY CONSTANT MINOR DIAMETER THAT IS LESS THAN THE INITIAL DIAMETER OF SAID OPENING, 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
203 words
THE METHOD OF PRODUCING A STRONG THREADED ANCHORAGE IN A WORKPIECE FORMED OF RELATIVELY HARD METAL, COMPRISING PROVIDING AN INTERNAL THREAD-LIKE STRUCTURE UPON SAID WORKPIECE INTERIORLY OF A SUBSTANTIALLY CYLINDRICAL BORE FORMED THEREIN, PROVIDING A FERRULE FORMED OF RELATIVELY SOFT METAL CHARACTERIZED BY PLASTIC FLOW UNDER SWAGING PRESSURE AND HAVING A SUBSTANTIALLY CYLINDRICAL OPENING THEREIN, FRICTIONALLY SECURING SAID FERRULE IN PLACE IN SAID BORE, AND SUBJECTING THE INTERIOR SURFACE OF SAID FERRULE TO SWAGING PRESSURE WITH AN EXTREMELY HARD THREADSWAGING 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, WHEREIN SAID THREAD-LIKE STRUCTURES ARE COMPLEMENTARY AND SAID EXTERNAL THREAD-LIKE STRUCTURE IS SWAGED INTO INTERLOCKED FRICTIONAL ENGAGEMENT WITH SAID INTERNAL THREAD-LIKE STRUCTURE SO AS SECURELY TO ANCHOR SAID FERRULE IN PLACE IN SAID BORE, SAID INTERNAL THREAD HAVING A SUBSTANTIALLY CONSTANT MAJOR DIAMETER THAT IS GREATER THAN THE INITIAL DIAMETER OF SAID OPENING AND A SUBSTANTIALLY CONSTANT MINOR DIAMETER THAT IS LESS THAN THE INITIAL DIAMETER OF SAID OPENING, 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) | 1968-07-12 | 1969-01-11 | 1969-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-12 | 1973-01-11 | 1973-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-12 | 1977-01-11 | 1977-07-13 | $7700.00 | Window Closed / Lapsed |