US3234642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction welding
Assignee: AMF Inc
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Filing: 1962-05-24
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Granted: 1966-02-15
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Expires: 1982-05-24
Abstract
No abstract record available.
Inventors
- 👤 Hollander Milton Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:25
CPC Classifications
B; B23; B23K; B23K20/00; B23K20/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
89 words
A PROCESS FOR THE FRICTION WELDING OF WORKPIECES OF DISSIMILAR METALS COMPRISING THE STEPS OF (A) RELATIVELY ROTATING AND FORCING TOGETHER THE END OF THE WORKPIECE HAVING THE HIGHER MELTING TEMPERATURE AGAINST A PREHEATING BLOCK HAVING A MELTING TEMPERATURE HIGHER THAN EITHER WORKPIECE, (B) REMOVING THE PREHEATING BLOCK FROM THE END OF THE WORKPIECE HAVING THE HIGHER MELTING TEMPERATURE, (C) FORCING TOGETHER AND RELATIVELY ROTATING THE WORKPIECES, AND (D) RAPIDLY STOPPING THE RELATIVE ROTATION BETWEEN THE WORKPIECES WHILE CONTINUING TO FORCE THE WORKPIECES TOGETHER TO FORM A FRICTION WELD.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |