Patent US3105293A successfully refreshed from Google Patents.
US3105293A
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Brazing dissimilar metal members
Assignee: Union Carbide Corp
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Filing: 1958-10-23
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Granted: 1963-10-01
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Expires: 1978-10-23
Abstract
No abstract record available.
Inventors
- 👤 Ransom P Skinner
- 👤 Richard M Poorman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:52
CPC Classifications
B; B23; B23K; B23K1/00; B23K1/19; B23K35/00; B23K35/001; B23K35/002; B23K35/22; B23K35/24; B23K35/28; B23K35/286; F; F16; F16L; F16L13/00; F16L13/007; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/939; Y10T; Y10T428/00; Y10T428/12; Y10T428/12458
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
105 words
A PROCESS FOR LAP BRAZING TOGETHER AN ALUMINUM TUBE AND A SECOND TUBE CONSTRUCTED FROM A METAL TAKEN FROM THE CLASS CONSISTING OF FERROUS METALS, FERROUS ALLOYS, NICKEL, NICKEL ALLOYS, COPPER AND COPPER ALLOYS COMPRISING THE STEPS OF COATING ONE END OF THE SECOND TUBE WITH A LAYER OF INTERMEDIATE BONDING MATERIAL TAKEN FROM THE CLASS CONSISTING OF SILVER AND SILVER ALLOYS, SAID COATING HAVING A THICKNESS OF FROM ABOUT 0.002 TO ABOUT 0.010 INCH, THE SOCOATED SECOND TUBE HAVING AN OUTER WALL DIAMETER SLIGHTLY SMALLER THAN THE INNER WALL DIAMETER OF SAD ALUMINUM TUBE SO AS TO BE RECEIVABLE THEREIN WITH A NARROW ANNULAR
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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) | 1966-09-30 | 1967-04-01 | 1967-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-30 | 1971-04-01 | 1971-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-30 | 1975-04-01 | 1975-10-01 | $7700.00 | Window Closed / Lapsed |