US4727001A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum brazing sheet
Assignee: KOBE SEIKO SHO 3-18 WAKINOHAMA-CHO 1-CHOME CHUO-KU KOBE 651 JAPAN KK
•
Filing: 1986-10-01
•
Granted: 1988-02-23
•
Expires: 2006-10-01
Abstract
Abstract An aluminum brazing sheet for use in brazing comprises; a core material composed of an aluminum alloy containing: 0.2-1.0 wt % Cu, 0.2-0.8 wt % Mg and at least one of the elements selected from: 0.05-0.5 wt % Mn, 0.05-0.5 wt % Zr, 0.05-0.5 wt % Cr, and the balance of Al and impurities, and a filler material composed of an Al-Si based alloy brazing material coated on one surface of said core material and a skin material composed of a sacrificial aluminum anode material at a purity higher than 99.0 wt % coated on the other surface of the core material. The aluminum brazing sheet according to this invention is satisfactory in the brazing property and also excellent in the corrosion resistance and the strength, which is suitable as the material for use in aluminum heat exchangers.
Inventors
- 👤 Masao Takemoto
- 👤 Jun Takigawa
- 👤 Tomohiro Nishimura
- 👤 Kikuo Toyose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:58
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/02; B23K35/0222; B23K35/0233; B23K35/0238; B23K35/22; B23K35/24; B23K35/28; B23K35/286; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12736; Y10T428/12764
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
79 words
An aluminum brazing sheet for use in brazing comprising; a core material composed of an aluminum alloy consisting of: 0.2-1.0 wt % Cu, 0.2-0.8 wt % Mg and at least one of the elements selected from: 0.05-0.5 wt % Mn, 0.05-0.5 wt % Zr, 0.05-0.5 wt % Cr, and the balance of Al and impurities, and a filler material composed of an Al-Si based alloy brazing material, which is coated on one or both surfaces of said core material.
Claim 2
Dependent Claim
79 words
An aluminum brazing sheet for use in brazing comprising; a core material composed of an aluminum alloy consisting of: 0.2-1.0 wt % Cu, 0.2-0.8 wt % Mg and at least one of the elements selected from: 0.05-0.5 wt % Mn, 0.05-0.5 wt % Zr, 0.05-0.5 wt % Cr, and the balance of Al and impurities, and a filler material composed of an Al-Si based alloy brazing material, which is coated on one or both surfaces of said core material.
Claim 3
Dependent Claim
121 words
An aluminum brazing sheet for use in brazing comprising; a core material composed of an aluminum alloy consisting of: 0.2-1.0 wt. % Cu, 0.2-0.8 wt. % Mg and at least one of the elements selected from: 0.05-0.5 wt. % Mn, 0.05-0.5 wt. % Zr, 0.05-0.5 wt. % Cr, and the balance of Al and impurities, and a filler material composed of an Al-Si based alloy brazing material, in which said Al-Si based alloy brazing material is coated as the filler material on one surface of said core material and a sacrificial aluminum anode material consisting essentially of aluminum of a purity higher than 99.0 wt. % is coated as the skin material on the other surface of said core material respectively.
Claim 4
Dependent Claim
121 words
An aluminum brazing sheet for use in brazing comprising; a core material composed of an aluminum alloy consisting of: 0.2-1.0 wt. % Cu, 0.2-0.8 wt. % Mg and at least one of the elements selected from: 0.05-0.5 wt. % Mn, 0.05-0.5 wt. % Zr, 0.05-0.5 wt. % Cr, and the balance of Al and impurities, and a filler material composed of an Al-Si based alloy brazing material, in which said Al-Si based alloy brazing material is coated as the filler material on one surface of said core material and a sacrificial aluminum anode material consisting essentially of aluminum of a purity higher than 99.0 wt. % is coated as the skin material on the other surface of said core material respectively.
References Cited (Backward Citations)
US3843333A
Cited
US4211827A
Cited
JPS5644742A
Cited
JPS5983741A
Cited
JPS5993194A
Cited
JPS59100250A
Cited
US4560625A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-02-22 | 1991-08-24 | 1992-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-22 | 1995-08-24 | 1996-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-22 | 1999-08-24 | 2000-02-23 | $7700.00 | Window Closed / Lapsed |