Patent US3562486A successfully refreshed from Google Patents.
US3562486A
Expired / Lapsed
US
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Electric arc torches
Assignee: Victor Equipment Co
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Filing: 1969-05-29
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Granted: 1971-02-09
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Expires: 1989-05-29
Abstract
Abstract An electric arc torch using a plasma forming stabilizing gas to maintain an arc between the tip of the torch electrode and a work piece to be cut, welded or otherwise treated; the electrode is held by an insulating sleeve which is heat-conductive and also serves as the gas mainfold in such a way as to permit operation at high power levels without reaching prohibitive temperatures at the electrode tip.
Inventors
- 👤 Bruce O Hatch
- 👤 Henry J Betourney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:16
CPC Classifications
B; B23; B23K; B23K10/00; B23K9/00; B23K9/16; B23K9/167; H; H05; H05H; H05H1/00; H05H1/24; H05H1/26; H05H1/32; H05H1/34; H05H1/3405; H05H1/3421
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
108 words
An electric arc torch comprising a torch body; an elongated electrode therein; a nozzle having an arc passageway spaced from said electrode; a mounting sleeve electrically insulating said electrode from said body and surrounding said electrode over a substantial poRtion of its length and extending to within three electrode diameters of the tip of said electrode, said sleeve positioning said electrode within said body such that the axis of said electrode is aligned with the axis of said passageway; gas conducting cannelures along said sleeve communicating with said passageway; and power means to establish and maintain an arc column from the tip of said electrode through said passageway.
Claim 2
Dependent Claim
108 words
An electric arc torch comprising a torch body; an elongated electrode therein; a nozzle having an arc passageway spaced from said electrode; a mounting sleeve electrically insulating said electrode from said body and surrounding said electrode over a substantial poRtion of its length and extending to within three electrode diameters of the tip of said electrode, said sleeve positioning said electrode within said body such that the axis of said electrode is aligned with the axis of said passageway; gas conducting cannelures along said sleeve communicating with said passageway; and power means to establish and maintain an arc column from the tip of said electrode through said passageway.
Claim 3
Dependent Claim
16 words
An arc torch according to claim 1 in which said sleeve is formed of boron nitride.
Claim 4
Dependent Claim
26 words
An arc torch according to claim 1 in which said cannelures are formed along the outer surface of said sleeve and parallel to the axis thereof.
Claim 5
Dependent Claim
22 words
An arc torch according to claim 3 in which said cannelures are in a helical pattern along the length of said sleeve.
Claim 6
Dependent Claim
26 words
An arc torch according to claim 1 in which said cannelures are formed on the inside surface of said sleeve and parallel to the axis thereof.
Claim 7
Dependent Claim
22 words
An arc torch according to claim 5 in which said cannelures are in a helical pattern along the length of said sleeve.
Claim 8
Dependent Claim
15 words
An arc torch according to claim 1 in which said sleeve is formed of lava.
Claim 9
Dependent Claim
17 words
An arc torch according to claim 1 in which said sleeve is formed of a ceramic material.
Claim 10
Dependent Claim
38 words
An arc torch according to claim 1 in which said electrode and said sleeve are formed with said electrode in close sliding fit with the bore of said sleeve at temperatures below the operating temperature of said torch
References Cited (Backward Citations)
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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) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |