US4410604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Iron-based brazing alloy compositions and brazed assemblies with iron based brazing alloys
Assignee: Garrett Corp
•
Filing: 1981-11-16
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Granted: 1983-10-18
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Expires: 2001-11-16
Abstract
Abstract An economical brazing alloy composition includes high amounts of iron. A brazed assembly includes iron-based brazing alloys.
Inventors
- 👤 Matthew J. Pohlman
- 👤 Lynn E. Kindlimann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:10
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/3053; B23K35/3066; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12951
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
56 words
An iron-based brazing filler alloy composition characterized by a flow temperature of under 2,200 degrees F., consisting essentially of: 15 to 40 weight percent nickel; 2 to 20 percent chrominum; 2 to 5 weight percent boron; 5 to 12 weight percent silicon; a maximum of 0.5 weight percent carbon; and at least 50 weight percent iron.
Claim 2
Dependent Claim
56 words
An iron-based brazing filler alloy composition characterized by a flow temperature of under 2,200 degrees F., consisting essentially of: 15 to 40 weight percent nickel; 2 to 20 percent chrominum; 2 to 5 weight percent boron; 5 to 12 weight percent silicon; a maximum of 0.5 weight percent carbon; and at least 50 weight percent iron.
Claim 3
Dependent Claim
18 words
A brazed article including light-gauge steel members joined together with the iron-based brazing filler alloy of claim 1.
Claim 4
Dependent Claim
29 words
A brazed article including light-gauge stainless steel members joined together with the iron-based brazing filler alloy of claim 1 at a braze temperature of under about 2200 degrees F.
Claim 5
Dependent Claim
58 words
An iron-based brazing filler alloy composition characterized by a flow temperature of under about 2,100 degrees F., consisting essentially of 60 to 70 weight percent iron; 18 to 22 weight percent nickel; 2 to 10 weight percent chromium; 2 to 5 weight percent boron; 5 to 12 weight percent silicon, and a maximum of 0.1 weight percent carbon.
Claim 6
Dependent Claim
58 words
An iron-based brazing filler alloy composition characterized by a flow temperature of under about 2,100 degrees F., consisting essentially of 60 to 70 weight percent iron; 18 to 22 weight percent nickel; 2 to 10 weight percent chromium; 2 to 5 weight percent boron; 5 to 12 weight percent silicon, and a maximum of 0.1 weight percent carbon.
Claim 7
Dependent Claim
29 words
The filler alloy composition of claim 4, having 2 to 5% Cr and wherein the sum of the silicon content and the boron content is from 8 to 15%.
Claim 8
Dependent Claim
56 words
An iron-based brazing filler alloy composition characterized by a braze temperature of under about 2,080 degrees F., consisting essentially of about 21 weight percent nickel; 2 to 5 weight percent chromium; 2 to 5 weight percent boron; 5 to 12 weight percent silicon; a maximum of 0.1 weight percent carbon; and about 65 weight percent iron.
Claim 9
Dependent Claim
56 words
An iron-based brazing filler alloy composition characterized by a braze temperature of under about 2,080 degrees F., consisting essentially of about 21 weight percent nickel; 2 to 5 weight percent chromium; 2 to 5 weight percent boron; 5 to 12 weight percent silicon; a maximum of 0.1 weight percent carbon; and about 65 weight percent iron.
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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) | 1986-10-17 | 1987-04-18 | 1987-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-17 | 1991-04-18 | 1991-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-17 | 1995-04-18 | 1995-10-18 | $7700.00 | Window Closed / Lapsed |