Patent US3590213A successfully refreshed from Google Patents.
US3590213A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arc starting device for long electrical stickout arc welding
Assignee: Voith Hydro Inc
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Filing: 1969-10-20
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Granted: 1971-06-29
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Expires: 1989-10-20
Abstract
Abstract An electrode holder having a pair of axially spaced electrode guides for use in arc welding. The electrode passes through these guides or tips and makes electrical contact with each tip. Means are provided to selectively direct electrical current to one or both of the tips. The tip closest to the work is connected in the electrical circuit to provide current to the electrode at a point adjacent to the workpiece to initiate the arc. Once the arc is started, this tip is isolated from the electrical circuit, and the current is provided to the electrode through the tip remote from the workpiece to permit long electrical stickout arc welding.
Inventors
- 👤 Robert A Caldwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:07
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/12; B23K9/122; B23K9/123
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
A holder for guiding welding wire to a workpiece during arc welding comprising: a main base portion constructed of an electrical conductive material; a first apertured conductive element constructed of electrical conductive material connected to said main base portion and electrically insulated therefrom; a welding tip constructed of electrical conductive material connected in electrical current carrying contact to said main base portion in spaced substantial alignment with said first apertured conductive element said welding tip being disposed closer to the workpiece than the first apertured conductive element during the welding operation welding wire being in electrical current carrying contact with and passing through successively both said first apertured conductive element and said welding tip and a second electrically conductive element connected to said main base portion and selectively movable into and out of direct mechanical and electrical contact with said first apertured conductive element to direct and interrupt the flow of electrical current to said welding tip.
Claim 2
Dependent Claim
157 words
A holder for guiding welding wire to a workpiece during arc welding comprising: a main base portion constructed of an electrical conductive material; a first apertured conductive element constructed of electrical conductive material connected to said main base portion and electrically insulated therefrom; a welding tip constructed of electrical conductive material connected in electrical current carrying contact to said main base portion in spaced substantial alignment with said first apertured conductive element said welding tip being disposed closer to the workpiece than the first apertured conductive element during the welding operation welding wire being in electrical current carrying contact with and passing through successively both said first apertured conductive element and said welding tip and a second electrically conductive element connected to said main base portion and selectively movable into and out of direct mechanical and electrical contact with said first apertured conductive element to direct and interrupt the flow of electrical current to said welding tip.
References Cited (Backward Citations)
US2951934A
Cited
US3010012A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |