US3676639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-consumable electrode for electric-arc process
Assignee: E.O. Paton Electric Welding Institute
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Filing: 1970-09-08
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Granted: 1972-07-11
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Expires: 1990-09-08
Abstract
Abstract A non-consumable electrode for electric-arc processes, in which a metallic clip provided with an electrode insert is positioned in a hollow body so that it is cooled by a cooling medium surrounding the entire surface of the clip and the insert.
Inventors
- 👤 Eduard Migranovich Esiban
- 👤 Mikhail Evgenievich Danchenko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:22
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/24; B23K9/28; B23K9/285
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
179 words
A non-consumable electrode for electric-arc processes comprising an electrically conductive hollow body having a free end, an electrically conductive elongate electrode insert, electrically conductive elongate annular means surrounding said electrode insert and interconnecting said electrode insert to said Hollow body at said free end thereof, said elongate means being of uniform thickness and having axially opposed open ends one of which exposes said insert internally of said body and the other of which exposes the insert externally of said body, said elongate means and said electrode insert each including a major portion projecting axially into said hollow body, and means defining a passageway into and through said hollow body for the flow of a cooling medium, said elongate means being positioned in said passageway such that said passageway extends along substantially all of said elongate means, whereby the cooling medium is in direct contact with the elongate means and so that said cooling medium can be brought directly into contact with said electrode insert, said insert being adapted for being consumed up to the limits of said elongate means.
Claim 2
Dependent Claim
179 words
A non-consumable electrode for electric-arc processes comprising an electrically conductive hollow body having a free end, an electrically conductive elongate electrode insert, electrically conductive elongate annular means surrounding said electrode insert and interconnecting said electrode insert to said Hollow body at said free end thereof, said elongate means being of uniform thickness and having axially opposed open ends one of which exposes said insert internally of said body and the other of which exposes the insert externally of said body, said elongate means and said electrode insert each including a major portion projecting axially into said hollow body, and means defining a passageway into and through said hollow body for the flow of a cooling medium, said elongate means being positioned in said passageway such that said passageway extends along substantially all of said elongate means, whereby the cooling medium is in direct contact with the elongate means and so that said cooling medium can be brought directly into contact with said electrode insert, said insert being adapted for being consumed up to the limits of said elongate means.
Claim 3
Dependent Claim
83 words
An electrode as claimed in claim 1 wherein said means for the flow of cooling medium comprises a tube mounted in said hollow body, said tube including an open-ended portion substantially enveloping said electrode insert and elongate means, said open-ended portion being in annular spaced relation with said elongate means and in annular and axial spaced relation with said hollow body to permit the cooling medium to be channelled through said tube along said elongate means and into contact with said hollow body.
Claim 4
Dependent Claim
38 words
An electrode as claimed in claim 2, including means for propelling the cooling medium through said tube and throughout said hollow body, said hollow body including means for allowing said cooling medium being propelled therein to exit therefrom.
Claim 5
Dependent Claim
25 words
An electrode as claimed in claim 1 wherein said electrode insert is of a material selectively compatible with the environment in which said insert burns.
Claim 6
Dependent Claim
17 words
An electrode as claimed in claim 4 wherein said electrode is tungsten when burned in inert gases.
Claim 7
Dependent Claim
13 words
An electrode as claimed in claim 4 wherein said electrode insert is zirconium.
Claim 8
Dependent Claim
13 words
An electrode as claimed in claim 1 wherein said cooling medium is water.
Claim 9
Dependent Claim
15 words
An electrode as claimed in claim 2 wherein said tube is of electrically insulative material.
Claim 10
Dependent Claim
32 words
An electrode as claimed in claim 1 wherein said means interconnecting said electrode insert to said hollow body is a metallic clip which is thin-walled and constituted of substantially heat conductive material.
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) | 1975-07-11 | 1976-01-10 | 1976-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-11 | 1980-01-10 | 1980-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-11 | 1984-01-10 | 1984-07-11 | $7700.00 | Window Closed / Lapsed |