US3760143A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welding stud
Assignee: USM Corp
•
Filing: 1972-01-03
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Granted: 1973-09-18
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Expires: 1992-01-03
Abstract
Abstract A weldable stud, especially one of high carbon steel to be drawn-arc welded to high or low carbon substrates (or vice versa), desirably includes a fluxing combination consisting essentially of nickel and aluminum. The conical end of the stud to be welded preferably has a hole in its tip for receiving a flux assembly wherein the nickel and aluminum respectively are present roughly on the order of about 30 to 70 percent by weight in novel and alternative forms for engendering austenitic joints. Resultant alloying at the fusion zone of the stud and substrate interfaces provides improved weld strength. The different flux assemblies may have substantially the same outer diameter and, accordingly, one mechanism is employed for practicing a novel method of successively producing and mounting the different assemblies in studs or the like.
Inventors
- 👤 H Rondeau
- 👤 D Ettinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:44
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/02; B23K35/0255; B23K35/0288; B23K35/22; B23K35/24; B23K35/28; B23K35/286; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/934; Y10S428/935; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12097; Y10T428/12181; Y10T428/12229; Y10T428/12271; Y10T428/12493; Y10T428/12736; Y10T428/1275; Y10T428/12757; Y10T428/12764; Y10T428/12771; Y10T428/12861; Y10T428/12951; Y10T428/12972
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
78 words
For drawn-arc welding of low or high carbon steel studs to high-carbon steel and/or high-carbon steel studs to low-carbon steel, an arc weldable steel stud having secured in partly protruding relation on one end thereof a composite fluxing material consisting essentially of aluminum and nickel in proportions favoring an austenitic weldment of the stud wiht a steel substrate said proportions being roughly about 70 parts of aluminum by weight and roughly about 30 parts of nickel by weight.
Claim 2
Dependent Claim
78 words
For drawn-arc welding of low or high carbon steel studs to high-carbon steel and/or high-carbon steel studs to low-carbon steel, an arc weldable steel stud having secured in partly protruding relation on one end thereof a composite fluxing material consisting essentially of aluminum and nickel in proportions favoring an austenitic weldment of the stud wiht a steel substrate said proportions being roughly about 70 parts of aluminum by weight and roughly about 30 parts of nickel by weight.
Claim 3
Dependent Claim
34 words
A stud as set forth in claim 1 wherein the fluxing material includes an exterior tubing of 1100 aluminum, the diameter of the tubing being less than about 75 percent that of the stud.
Claim 4
Dependent Claim
28 words
A stud as set forth in cliam 2 wherein the fluxing material additionally includes a mixed powder of nickel and 1100 aluminum particles packed within the aluminum tubing.
Claim 5
Dependent Claim
28 words
A stud as set forth in cliam 2 wherein the fluxing material additionally includes a mixed powder of nickel and 1100 aluminum particles packed within the aluminum tubing.
Claim 6
Dependent Claim
22 words
A stud as set forth in claim 3 wherein the particle size is on the order of -170 +325, 5 percent tolerance.
Claim 7
Dependent Claim
58 words
A stud as set forth in claim 3 wherein the stud end receiving the composite fluxing material is conical and centrally recessed, and the material has its aluminum tubing at least partly formed as a hemispherical protruding end portion, a peripheral rim of the stud defining its recess being deformed inwardly to crimp the tubing in locked relation.
Claim 8
Dependent Claim
62 words
A stud as set forth in claim 1 wherein the fluxing material consists of nickel on the order of about 30 parts by weight and aluminum on the order of 70 parts, a portion of the aluminum being comprised of tubing having a diameter less than that of the stud, said aluminum tubing being packed with aluminum particles which are nickel plated.
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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) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |