Patent US3707616A successfully refreshed from Google Patents.
US3707616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust devices
Assignee: ERIK A LINDKVIST
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Filing: 1971-11-24
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Granted: 1972-12-26
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Expires: 1991-11-24
Abstract
Abstract An exhaust device for gases and fumes in electric welding processes includes an exhaust conduit which is drawn up to the means holding the electrode. Arranged in the exhaust conduit is a connecting socket or like element to which a sleeve enclosing the electrode can be fixed. The sleeve is of such a nature as to be gradually disintegrated by the electric welding arc so that the electrode in the course of its successive consumption will have its end portion located outside the mouth or end of the sleeve.
Inventors
- 👤 Erik A Lindkvist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:00
CPC Classifications
B; B08; B08B; B08B15/00; B08B15/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
115 words
An exhaust device for gases and fumes in electric welding processes, including an exhaust nozzle mounted to the electriccarrying tool and connectable to an exhaust conduit, wherein the exhaust device comprises holder means preferably in the form of a socket for a sleeve which constitutes the exhaust nozzle proper, encloses the electrode and extends towards the free end of the electrode, said holder means being connected to the electrodecarrying tool, and said sleeve is of such a nature as to be gradually decomposed or destroyed under the influence of the welding arc so that the electrode in the course of its successive consumption will have its end portion located outside the end of the sleeve.
Claim 2
Dependent Claim
115 words
An exhaust device for gases and fumes in electric welding processes, including an exhaust nozzle mounted to the electriccarrying tool and connectable to an exhaust conduit, wherein the exhaust device comprises holder means preferably in the form of a socket for a sleeve which constitutes the exhaust nozzle proper, encloses the electrode and extends towards the free end of the electrode, said holder means being connected to the electrodecarrying tool, and said sleeve is of such a nature as to be gradually decomposed or destroyed under the influence of the welding arc so that the electrode in the course of its successive consumption will have its end portion located outside the end of the sleeve.
Claim 3
Dependent Claim
19 words
A device as claimed in claim 1, wherein the socket serving as holder means for the sleeve is articulated.
Claim 4
Dependent Claim
19 words
A device as claimed in claim 1, wherein a tube elbow is arranged as holder means for the sleeve.
Claim 5
Dependent Claim
30 words
A device as claimed in claim 1, wherein the material of the sleeve is specially treated paper or the like, a plastics composition or metal or combinations of said substances.
References Cited (Backward Citations)
GB1134557A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-26 | 1976-06-26 | 1976-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-26 | 1980-06-26 | 1980-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-26 | 1984-06-26 | 1984-12-26 | $7700.00 | Window Closed / Lapsed |