US3597576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spatter and heat shield for welding gun
Assignee: Delaware Capital Formation Inc
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Filing: 1969-07-15
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Granted: 1971-08-03
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Expires: 1989-07-15
Abstract
Abstract A heat and spatter shield for an arc-welding gun of the type used for applying gas-shielded consumable-electrode arc-welding processes. A shield element insulated from the welding current circuit is attachable to the arc-welding gun so as to be disposed at the downstream end of the current contact tip and extend beyond the downstream opening of the gas nozzle so as to shield the downstream opening of the gas nozzle from metal spatter ejected from the welding operation and from direct heat radiation from the welding arc. At least the core of the shield element is composed of a heat-resistant nonelectrically conductive material. The shield element is disposed in the gas stream and arranged to provide an airfoil effect contributing to formation of the proper flow configuration of the shielding gas. Cylindrical and spherical-type shield elements are disclosed. Various means are disclosed for attaching the shield element to the arc-welding gun.
Inventors
- 👤 Arthur A Bernard
- 👤 Richard A Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:37
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/24; B23K9/28; B23K9/29; B23K9/291; B23K9/295
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
76 words
In an arc-welding gun for applying gas-shielded consumableelectrode arc-welding processes, the combination comprising: a nozzle having an opening at one end; and a current contact tube extending through said nozzle opening and having a downstream shield portion, said shield portion not forming part of a welding current circuit, said shield portion extending beyond said nozzle opening for such a distance that said nozzle is shielded from metal spatter and from arc heat radiating toward said nozzle.
Claim 2
Dependent Claim
76 words
In an arc-welding gun for applying gas-shielded consumableelectrode arc-welding processes, the combination comprising: a nozzle having an opening at one end; and a current contact tube extending through said nozzle opening and having a downstream shield portion, said shield portion not forming part of a welding current circuit, said shield portion extending beyond said nozzle opening for such a distance that said nozzle is shielded from metal spatter and from arc heat radiating toward said nozzle.
Claim 3
Dependent Claim
100 words
In an arc-welding gun for applying gas-shielded consumable-electrode arc-welding processes, the combination comprising: a gas nozzle having an opening at one end; and a current contact tube extending longitudinaLly in said gas nozzle and having a shield portion forming the downstream end of said current contact tube, said shield portion not forming part of a welding current circuit, said shield portion being partially spaced within said gas nozzle opening, said shield portion extending beyond said gas nozzle opening for such a distance that said gas nozzle opening is shielded from metal spatter and from arc heat radiating toward said nozzle.
Claim 4
Dependent Claim
100 words
In an arc-welding gun for applying gas-shielded consumable-electrode arc-welding processes, the combination comprising: a gas nozzle having an opening at one end; and a current contact tube extending longitudinaLly in said gas nozzle and having a shield portion forming the downstream end of said current contact tube, said shield portion not forming part of a welding current circuit, said shield portion being partially spaced within said gas nozzle opening, said shield portion extending beyond said gas nozzle opening for such a distance that said gas nozzle opening is shielded from metal spatter and from arc heat radiating toward said nozzle.
Claim 5
Dependent Claim
37 words
The invention defined in claim 2 wherein said current contact tube has a longitudinal bore which is of enlarged diameter for the portion of its length which extends through said shield portion of said current contact tube.
Claim 6
Dependent Claim
99 words
In an arc-welding gun for applying gas-shielded consumable-electrode arc-welding processes and which includes a gas nozzle having an opening at one end and a current contact member having a longitudinal bore, wherein the invention comprises: a shield element partially spaced within said gas nozzle opening, said shield element not forming part of a welding current circuit but having a longitudinal bore aligned with said current contact tube bore, said shield element extending beyond said gas nozzle opening for such a distance that said gas nozzle is shielded from metal spatter and from arc heat radiating toward said gas nozzle.
Claim 7
Dependent Claim
99 words
In an arc-welding gun for applying gas-shielded consumable-electrode arc-welding processes and which includes a gas nozzle having an opening at one end and a current contact member having a longitudinal bore, wherein the invention comprises: a shield element partially spaced within said gas nozzle opening, said shield element not forming part of a welding current circuit but having a longitudinal bore aligned with said current contact tube bore, said shield element extending beyond said gas nozzle opening for such a distance that said gas nozzle is shielded from metal spatter and from arc heat radiating toward said gas nozzle.
Claim 8
Dependent Claim
107 words
In an arc-welding gun for applying gas-shielded consumable-electrode arc-welding processes and which includes a gas nozzle having an opening at one end and a current contact tube having a longitudinal bore, wherein the invention comprises: a shield element partially spaced within said gas nozzle opening and extending beyond said current contact member, said shield element not forming part of a welding current circuit but having a longitudinal bore aligned with said current contact tube bore, said shield element extending beyond said gas nozzle opening for such a distance that said gas nozzle opening is shielded from metal spatter and from arc heat radiating toward said gas nozzle.
Claim 9
Dependent Claim
107 words
In an arc-welding gun for applying gas-shielded consumable-electrode arc-welding processes and which includes a gas nozzle having an opening at one end and a current contact tube having a longitudinal bore, wherein the invention comprises: a shield element partially spaced within said gas nozzle opening and extending beyond said current contact member, said shield element not forming part of a welding current circuit but having a longitudinal bore aligned with said current contact tube bore, said shield element extending beyond said gas nozzle opening for such a distance that said gas nozzle opening is shielded from metal spatter and from arc heat radiating toward said gas nozzle.
Claim 10
Dependent Claim
21 words
The invention defined in claim 5 wherein said shield element bore is larger in diameter than said current contact member bore.
Claim 11
Dependent Claim
18 words
The invention defined in claim 5 wherein said shield element includes shielding surfaces of heat-resistant electrically nonconductive material.
Claim 12
Dependent Claim
16 words
The invention defined in claim 5 wherein said shield element comprises a heat-resistant electrically nonconductive material.
Claim 13
Dependent Claim
17 words
The invention defined in claim 5 wherein said shield element is attached to said current contact tube.
Claim 14
Dependent Claim
17 words
The invention defined in claim 5 wherein said shield element is integral with said current contact tube.
Claim 15
Dependent Claim
30 words
The invention defined in claim 5 wherein said shield element is attached to said gas nozzle by a plurality of elements extending between said gas nozzle and said shield element.
Claim 16
Dependent Claim
14 words
The invention defined in claim 5 wherein said shield element is of cylindrical configuration.
Claim 17
Dependent Claim
14 words
The invention defined in claim 5 wherein said shield element is of spherical configuration.
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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) | 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 |