Patent US4281891A successfully refreshed from Google Patents.
US3105293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brazing dissimilar metal members
Assignee: Union Carbide Corp
•
Filing: 1958-10-23
•
Granted: 1963-10-01
•
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 06:15
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
References Cited (Backward Citations)
GB472582A
Cited
US2271210A
Cited
US2539246A
Cited
US2698813A
Cited
US2790656A
Cited
US2761047A
Cited
GB768211A
Cited
US2823933A
Cited
US2846762A
Cited
US2763822A
Cited
US2914641A
Cited
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 |