US3346947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction welding
Assignee: AMF Inc
•
Filing: 1963-07-10
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Granted: 1967-10-17
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Expires: 1983-07-10
Abstract
No abstract record available.
Inventors
- 👤 Hollander Milton Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:57
CPC Classifications
B; B23; B23K; B23K20/00; B23K20/12; B23K20/129
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
THE METHOD OF FRICTION WELDING ALUMINUM AND COPPER WORKPIECES COMPRISING THE STEPS OF ROTATING THE WORKPIECES RELATIVE TO EACH OTHER, FORCING THE WORKPIECES TOGETHER SO THAT BETWEEN 3,000 AND 30,000 FOOT POUNDS OF ENERGY ARE RELEASED IN THE WELD AREA FOR EACH SQUARE INCH OF WELD AREA, AND RAPIDLY STOPPING THE RELATIVE ROTATION OF THE WORKPIECES TO COMPLETE THE WELD IN LESS THAN TEN SECONDS.
Claim 2
Independent Claim
65 words
THE METHOD OF FRICTION WELDING ALUMINUM AND COPPER WORKPIECES COMPRISING THE STEPS OF ROTATING THE WORKPIECES RELATIVE TO EACH OTHER, FORCING THE WORKPIECES TOGETHER SO THAT BETWEEN 3,000 AND 30,000 FOOT POUNDS OF ENERGY ARE RELEASED IN THE WELD AREA FOR EACH SQUARE INCH OF WELD AREA, AND RAPIDLY STOPPING THE RELATIVE ROTATION OF THE WORKPIECES TO COMPLETE THE WELD IN LESS THAN TEN SECONDS.
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) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |