US3186203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for forming tubular members
Assignee: Individual
•
Filing: 1960-05-09
•
Granted: 1965-06-01
•
Expires: 1980-05-09
Abstract
No abstract record available.
Inventors
- 👤 Jr Francis E Brady
- 👤 Pearson L Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:41
CPC Classifications
B; B21; B21D; B21D26/00; B21D26/02; B21D26/033; B21D26/043; B21D26/039; B21D26/045; B21D26/047
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A DEVICE FOR FORMING A NECK IN A TUBULAR MEMBER COMPRISING A MANDREL HAVING A CAVITY OPENING AT ONE END, A SECOND MANDREL HAVING A REDUCED END PORTION RECIPROCABLY RECEIVED IN SAID CAVITY, SAID MANDRELS BEING ARRANGED IN SUCH A MANNER THAT THE TUBE MAY BE RECEIVED THEREABOUT, MEANS FOR EXERTING PRESSURE ON THE OUTER SURFACE OF SAID TUBE, AND MEANS FOR WITHDRAWING SAID REDUCED END PORTION OF SAID SECOND MANDREL FROM SAID CAVITY AND FOR EXPOSING SAID REDUCED END PORTION TO THE INSIDE OF SAID TUBULAR MEMBER.
Claim 2
Independent Claim
88 words
A DEVICE FOR FORMING A NECK IN A TUBULAR MEMBER COMPRISING A MANDREL HAVING A CAVITY OPENING AT ONE END, A SECOND MANDREL HAVING A REDUCED END PORTION RECIPROCABLY RECEIVED IN SAID CAVITY, SAID MANDRELS BEING ARRANGED IN SUCH A MANNER THAT THE TUBE MAY BE RECEIVED THEREABOUT, MEANS FOR EXERTING PRESSURE ON THE OUTER SURFACE OF SAID TUBE, AND MEANS FOR WITHDRAWING SAID REDUCED END PORTION OF SAID SECOND MANDREL FROM SAID CAVITY AND FOR EXPOSING SAID REDUCED END PORTION TO THE INSIDE OF SAID TUBULAR MEMBER.
References Cited (Backward Citations)
GB350336A
Cited
US2375574A
Cited
US2431851A
Cited
US2756804A
Cited
US2720241A
Cited
US2892253A
Cited
US2770874A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-05-31 | 1968-11-30 | 1969-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-31 | 1972-11-30 | 1973-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-31 | 1976-11-30 | 1977-06-01 | $7700.00 | Window Closed / Lapsed |