US5244144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for brazing aluminum materials
Assignee: Resonac Holdings Corp
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Filing: 1992-11-12
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Granted: 1993-09-14
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Expires: 2012-11-12
Abstract
Abstract A method is provided to braze aluminum materials to each other, the method comprising a step of producing a fluoride gas-containing atmosphere within a brazing oven. The method further comprises a step of brazing the aluminum materials, by heating said materials within said atmosphere melts. The fluoride gas-containing atmosphere is produced in the soldering oven: by introducing an inert gas and the fluoride gas through different passages; by introducing into the oven a mixture of the inert gas and the fluoride gas; or by heating a fluoride in a receptacle which is placed in the oven so as to gasify the fluoride within the oven.
Inventors
- 👤 Yasuhiro Osame
- 👤 Satoko Arai
- 👤 Shoichi Sato
- 👤 Shuichi Murooka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:59
CPC Classifications
B; B23; B23K; B23K1/00; B23K1/008; B23K1/19; B23K35/00; B23K35/22; B23K35/38; Y; Y10; Y10S; Y10S148/00; Y10S148/017
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
60 words
A method for brazing aluminum materials comprising producing a KAlF 4 gas-containing atmosphere within a brazing oven, fluxing and brazing the aluminum materials to be bonded to each other by heating said materials within said atmosphere at a predetermined temperature at which a brazing agent melts, said atmosphere containing an amount of 1 to 500 ppm of KAlF 4 gas.
Claim 2
Independent Claim
60 words
A method for brazing aluminum materials comprising producing a KAlF 4 gas-containing atmosphere within a brazing oven, fluxing and brazing the aluminum materials to be bonded to each other by heating said materials within said atmosphere at a predetermined temperature at which a brazing agent melts, said atmosphere containing an amount of 1 to 500 ppm of KAlF 4 gas.
Claim 3
Dependent Claim
28 words
A method according to claim 1 wherein the KAlF 4 gas-containing atmosphere is produced by introducing into the oven an inert gas and the gas through different passages.
Claim 4
Dependent Claim
29 words
A method according to claim 1 wherein the KAlF 4 gas-containing atmosphere is produced by introducing into the oven a mixture of an inert gas and KAlF 4 gas.
Claim 5
Dependent Claim
37 words
A method according to claim 1 wherein the KAlF 4 gas-containing atmosphere is produced by heating KAlF 4 in a receptacle which is placed in the oven so as to gasify the KAlF 4 within the oven
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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) | 1996-09-13 | 1997-03-15 | 1997-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-09-13 | 2001-03-15 | 2001-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-09-13 | 2005-03-15 | 2005-09-14 | $7700.00 | Window Closed / Lapsed |