US3080587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming a cap stud
Assignee: Textron Industries Inc
•
Filing: 1959-03-23
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Granted: 1963-03-12
•
Expires: 1979-03-23
Abstract
No abstract record available.
Inventors
- 👤 Raymond H Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:47
CPC Classifications
B; B21; B21K; B21K1/00; B21K1/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
THE METHOD OF MAKING A CAP STUD INCLUDING A CUP SHAPED CAP AND A THREADED SHANK INTEGRAL WITH THE END WALL OF SAID CAP, SAID METHOD COMPRISING THE STEPS OF PROVIDING A WORKPIECE INCLUDING A CYLINDRICAL HEAD PART AND A CYLINDRICAL SHANK PORTION OF REDUCED DIAMETER, FORMING THREADS ON SAID SHANK, APPLYING PRESSURE IN THE AXIAL DIRECTION TO THE END OF SAID SHANK PORTION AND TO AN ANNULAR AREA OF SAID HEAD PART SPACED INWARDLY OF THE PERIPHERY THEREOF AND IMMEDIATELY ADJACENT SAID SHANK PORTION WHILE RESTRAINING SAID HEAD PART FROM LATERAL EXPANSION AND FROM MOVEMENT BODILY IN DIRECTION OF SAID PRESSURE TO CAUSE THE MATERIAL OF SAID HEAD PART TO EXTRUDE IN THE AREA SURROUNDING SAID ANNULAR AREA IN THE DIRECTION OPPOSITE THE DIRECTION OF SAID PRESSURE, CONFINING SAID SHANK PORTION AND THE EXTRUDED ANNULAR PORTION AGAINST LATERAL EXPANSION, AND CEASING THE APPLICATION OF SAID PRESSURE AT A PREDETERMINED POINT TO LEAVE AN END WALL OF PREDETERMINED THICKNESS.
Claim 2
Independent Claim
159 words
THE METHOD OF MAKING A CAP STUD INCLUDING A CUP SHAPED CAP AND A THREADED SHANK INTEGRAL WITH THE END WALL OF SAID CAP, SAID METHOD COMPRISING THE STEPS OF PROVIDING A WORKPIECE INCLUDING A CYLINDRICAL HEAD PART AND A CYLINDRICAL SHANK PORTION OF REDUCED DIAMETER, FORMING THREADS ON SAID SHANK, APPLYING PRESSURE IN THE AXIAL DIRECTION TO THE END OF SAID SHANK PORTION AND TO AN ANNULAR AREA OF SAID HEAD PART SPACED INWARDLY OF THE PERIPHERY THEREOF AND IMMEDIATELY ADJACENT SAID SHANK PORTION WHILE RESTRAINING SAID HEAD PART FROM LATERAL EXPANSION AND FROM MOVEMENT BODILY IN DIRECTION OF SAID PRESSURE TO CAUSE THE MATERIAL OF SAID HEAD PART TO EXTRUDE IN THE AREA SURROUNDING SAID ANNULAR AREA IN THE DIRECTION OPPOSITE THE DIRECTION OF SAID PRESSURE, CONFINING SAID SHANK PORTION AND THE EXTRUDED ANNULAR PORTION AGAINST LATERAL EXPANSION, AND CEASING THE APPLICATION OF SAID PRESSURE AT A PREDETERMINED POINT TO LEAVE AN END WALL OF PREDETERMINED THICKNESS.
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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) | 1966-03-11 | 1966-09-10 | 1967-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-11 | 1970-09-10 | 1971-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-11 | 1974-09-10 | 1975-03-12 | $7700.00 | Window Closed / Lapsed |