US3597584A
Expired / Lapsed
US
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Welding wire for the electric arc welding in air
Assignee: US Philips Corp
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Filing: 1969-07-28
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Granted: 1971-08-03
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Expires: 1989-07-28
Abstract
Abstract Welding electrode having an iron containing casing and a core containing calcium fluoride, titanium dioxide and potash feldspar.
Inventors
- 👤 Karel Ter Haar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:37
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/368; B23K35/24; B23K35/30; B23K35/3053
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
143 words
A welding electrode for the electric arc welding in air consisting of a tubular casing on the basis of iron and a core containing slag-forming material and metal powder, characterized in that the quantity of slag-forming material is 5-15 percent by weight of the electrode, that said material contains calcium fluoride, titanium dioxide and potash feldspar in quantities of 3.0-7.5 percent by weight, 0.75-3.0 percent by weight and 0.250.80 percent by weight, respectively, of the electrode, that said material further contains calcium carbonate in a quantity of up to 7.5 percent by weight of the electrode, on the understanding that the ratio of quantities by weight of calcium carbonate and calcium fluoride is always smaller than 1, and that the core further comprises ferrotitanium which contains 15-25 percent by weight of titanium in a quantity of 3.5-9.5 percent by weight of the electrode.
Claim 2
Dependent Claim
143 words
A welding electrode for the electric arc welding in air consisting of a tubular casing on the basis of iron and a core containing slag-forming material and metal powder, characterized in that the quantity of slag-forming material is 5-15 percent by weight of the electrode, that said material contains calcium fluoride, titanium dioxide and potash feldspar in quantities of 3.0-7.5 percent by weight, 0.75-3.0 percent by weight and 0.250.80 percent by weight, respectively, of the electrode, that said material further contains calcium carbonate in a quantity of up to 7.5 percent by weight of the electrode, on the understanding that the ratio of quantities by weight of calcium carbonate and calcium fluoride is always smaller than 1, and that the core further comprises ferrotitanium which contains 15-25 percent by weight of titanium in a quantity of 3.5-9.5 percent by weight of the electrode.
Claim 3
Dependent Claim
42 words
A welding electrode as claimed in claim 1, characterized in that the slag-forming material contains calcium fluoride, titanium dioxide and potash feldspar in quantities of 3.5-4.5 percent by weight, 0.90-1.5 percent by weight and 0.35-0.50 percent by weight, respectively, of the electrode.
Claim 4
Dependent Claim
23 words
A welding electrode of claim 1 wherein the ratio by weight of the calcium carbonate to the calcium fluoride present is approximately 2:3.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |