Patent US3573420A successfully refreshed from Google Patents.
US3573420A
Expired / Lapsed
US
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Process and apparatus for nonconsumable electrode overlay welding
Assignee: Hoskins Manufacturing Co
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Filing: 1968-12-23
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Granted: 1971-04-06
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Expires: 1988-12-23
Abstract
Abstract Electric arc overlay welding, often called arc cladding, on a metallic backing, which in many cases is of steel. A barrier strip rests on the backing and a nonconsumable electrode arcs to the barrier strip. In one form of the invention the nonconsumable electrode oscillates back and forth across the barrier strip as it moves forward and in some cases it goes beyond the barrier strip and arcs to a previous weld bead beside the barrier strip. In one form of the invention the barrier strip is of green or unsintered compacted metal particles. The barrier strip may contain flux and it may contain deoxidizer.
Inventors
- 👤 Wallace C Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:50
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
119 words
A process of electric arc overlay welding on a metallic backing, which has on the backing a previous weld bead, which comprises laying down a metallic barrier strip constituting a separate individual structure and lying against the metallic backing, and lying beside the previous weld bead, arching to the barrier strip and to the previous weld bead from a nonconsumable electrode to form a weld pool of metal from the barrier strip, metal from the metallic backing, and metal from the edge of the previous weld bead, moving the nonconsumable electrode back and forth sidewise of the barrier strip, and over the edge of the previous weld bead, and relatively advancing the nonconsumable electrode lengthwise of the barrier strip.
Claim 2
Dependent Claim
119 words
A process of electric arc overlay welding on a metallic backing, which has on the backing a previous weld bead, which comprises laying down a metallic barrier strip constituting a separate individual structure and lying against the metallic backing, and lying beside the previous weld bead, arching to the barrier strip and to the previous weld bead from a nonconsumable electrode to form a weld pool of metal from the barrier strip, metal from the metallic backing, and metal from the edge of the previous weld bead, moving the nonconsumable electrode back and forth sidewise of the barrier strip, and over the edge of the previous weld bead, and relatively advancing the nonconsumable electrode lengthwise of the barrier strip.
Claim 3
Dependent Claim
32 words
A process of claim 1, in which the barrier strip is a flexible strip of green or unsintered compacted powder metal which is in close conformity to the surface of the backing.
Claim 4
Dependent Claim
12 words
A process of claim 2, in which the barrier strip contains flux.
Claim 5
Dependent Claim
12 words
A process of claim 2, in which the barrier strip contains deoxidizer.
Claim 6
Dependent Claim
18 words
A process of claim 1, which comprises projecting a plasma from the nonconsumable electrode toward the barrier strip.
References Cited (Backward Citations)
US2175606A
Cited
US1635217A
Cited
US2175607A
Cited
US3118047A
Cited
US3248513A
Cited
US3260834A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-05 | 1974-10-05 | 1975-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-05 | 1978-10-05 | 1979-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-05 | 1982-10-05 | 1983-04-06 | $7700.00 | Window Closed / Lapsed |