Patent US3292256A successfully refreshed from Google Patents.
US3292256A
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Pressure bonding of dissimilar metals
Assignee: Allegheny Ludlum Steel Corp
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Filing: 1964-04-09
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Granted: 1966-12-20
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Expires: 1984-04-09
Abstract
No abstract record available.
Inventors
- 👤 Jack B Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:12
CPC Classifications
B; B23; B23K; B23K20/00; B23K20/22; B23K20/227; B23K20/2275; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12472; Y10T428/12493; Y10T428/12736; Y10T428/1275; Y10T428/12757; Y10T428/12764
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A METHOD OF BONDING A STEEL PLATE MEMBER TO AN ALUMINUM MEMBER COMPRISING, THE STEPS OF INTERLEAVING ALLUMINUM FOIL HAVING A THICKNESS OF NOT GREATER THAN 0.05" BETWEEN THE FACES OF THE MEMBERS TO BE BONDED, HEATING THE ASSEMBLED MEMBERS AND FOIL TO BETWEEN 700* F. AND 1000* F., AND THEN EXERTING A PRESSURE OF AT LEAST 680 P.S.I., AND PREFERABLY ABOUT 1700 P.S.I. AGAINST SAID HEATED MEMBERS TO THEREBY CAUSE THE ALUMINUM FOIL TO BOND THE MEMBERS TOGETHER.
Claim 2
Independent Claim
79 words
A METHOD OF BONDING A STEEL PLATE MEMBER TO AN ALUMINUM MEMBER COMPRISING, THE STEPS OF INTERLEAVING ALLUMINUM FOIL HAVING A THICKNESS OF NOT GREATER THAN 0.05" BETWEEN THE FACES OF THE MEMBERS TO BE BONDED, HEATING THE ASSEMBLED MEMBERS AND FOIL TO BETWEEN 700* F. AND 1000* F., AND THEN EXERTING A PRESSURE OF AT LEAST 680 P.S.I., AND PREFERABLY ABOUT 1700 P.S.I. AGAINST SAID HEATED MEMBERS TO THEREBY CAUSE THE ALUMINUM FOIL TO BOND THE MEMBERS TOGETHER.
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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) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |