Patent US3234643A successfully refreshed from Google Patents.
US3234643A
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
2026-10-30 06:11
CPC Classifications
B; B23; B23K; B23K20/00; B23K20/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
51 words
IN THE FRICTION WELDING OF METAL WORKPIECES THE STEP OF SUPERCOOLING AT LEAST ONE WORKPICE PRIOR TO FRICTION WELDING THE WORKPICES; THEREAFTER RELATIVELY ROTATING THE WORKPIECES IN CONTACT TO HEAT SAID WORKPIECES TO A WELDING TEMPERATURE BY FRICTON AND CONTINUING TO COOL SAID ONE WORKPIECE DURING FRICTION APPLICATION TO CONTROL UPSET.
Claim 2
Dependent Claim
51 words
IN THE FRICTION WELDING OF METAL WORKPIECES THE STEP OF SUPERCOOLING AT LEAST ONE WORKPICE PRIOR TO FRICTION WELDING THE WORKPICES; THEREAFTER RELATIVELY ROTATING THE WORKPIECES IN CONTACT TO HEAT SAID WORKPIECES TO A WELDING TEMPERATURE BY FRICTON AND CONTINUING TO COOL SAID ONE WORKPIECE DURING FRICTION APPLICATION TO CONTROL UPSET.
Claim 3
Dependent Claim
69 words
THE PROCESS OF FRICTION WELDING METAL WORKPIECES HAVING DIFFERENT MELTING TEMPERATURES COMPRISING THE STEPS OF: (A) FLOWING A COOLANT FLUID NEAR THE END OF THE LOWER MELTING WORKPIECE, (B) RELATIVELY ROTATING THE WORKPIECES; FORCING THEM TOGETHER; COOLING SAID LOWER MELTING WORKPIECE DURING ROTATION, AND (C) RAPIDLY STOPPING THE RELATIVE ROTATION OF THE WORKPIECES AND CONTINUING TO FORCE THEM TOGETHER TO FRICTION WELD THE WORKPIECES, SAID COOLING AVOIDING EXCESSIVE DEFORMATION.
Claim 4
Dependent Claim
69 words
THE PROCESS OF FRICTION WELDING METAL WORKPIECES HAVING DIFFERENT MELTING TEMPERATURES COMPRISING THE STEPS OF: (A) FLOWING A COOLANT FLUID NEAR THE END OF THE LOWER MELTING WORKPIECE, (B) RELATIVELY ROTATING THE WORKPIECES; FORCING THEM TOGETHER; COOLING SAID LOWER MELTING WORKPIECE DURING ROTATION, AND (C) RAPIDLY STOPPING THE RELATIVE ROTATION OF THE WORKPIECES AND CONTINUING TO FORCE THEM TOGETHER TO FRICTION WELD THE WORKPIECES, SAID COOLING AVOIDING EXCESSIVE DEFORMATION.
References Cited (Backward Citations)
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US2744039A
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US2862294A
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US3060563A
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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) | 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 |