Patent US3944778A successfully refreshed from Google Patents.
US3944778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrode assembly of plasmatron
Assignee: Individual
•
Filing: 1974-05-14
•
Granted: 1976-03-16
•
Expires: 1994-05-14
Abstract
Abstract An electrode assembly for a plasmatron, comprising a holder being cooled having a high-heat insert mounted therein in contact with a near-the-electrode zone of an arc at one side thereof and in thermal and electrical contact with the cooled holder at the other side thereof; a chamber formed in said holder between said high-heat insert and cooled holder extending symmetrical to the insert axis and filled with a substance whose coefficient of thermal conductivity is lower than that of the material of the cooled holder, the substance filling the chamber being in constant contact with the high-heat insert. Used as a substance filling the chamber is a gaseous element, and as a high-heat insert is a metal selected from groups IV, V, or VI of the Periodic System, or an alloy based thereon.
Inventors
- 👤 David Grigorievich Bykhovsky
- 👤 Aldexandr Ivanovich Danilov
- 👤 Mikhail Shikovich Brodsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:47
CPC Classifications
B; B23; B23K; B23K10/00; B23K35/00; B23K35/02; B23K35/0205
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
114 words
An electrode assembly for a plasmatron, comprising: a holder being cooled, a high-heat insert in said holder having a first face which is in contact with a near-the-electrode zone of an arc and a second face in thermal and electrical contact with said cooled holder, a chamber being formed in said holder between said high-heat insert and the interior of said cooled holder extending substantially symmetrical to the axis of said high-heat insert, and a substance filling said chamber whose coefficient of thermal conductivity is lower than that of the material of said cooled holder, the substance filling said chamber being in constant and direct contact with the central portion of said high-heat insert.
Claim 2
Dependent Claim
114 words
An electrode assembly for a plasmatron, comprising: a holder being cooled, a high-heat insert in said holder having a first face which is in contact with a near-the-electrode zone of an arc and a second face in thermal and electrical contact with said cooled holder, a chamber being formed in said holder between said high-heat insert and the interior of said cooled holder extending substantially symmetrical to the axis of said high-heat insert, and a substance filling said chamber whose coefficient of thermal conductivity is lower than that of the material of said cooled holder, the substance filling said chamber being in constant and direct contact with the central portion of said high-heat insert.
Claim 3
Dependent Claim
29 words
An electrode assembly as claimed in claim 1, wherein said chamber is air-tight and filled with a gaseous substance selected from the group of gases comprising argon and gas.
Claim 4
Dependent Claim
33 words
An electrode assembly as claimed in claim 1, wherein said high-heat insert is a metal selected from Groups IV, V and VI of the Periodic System of elements and an alloy based thereon.
Claim 5
Dependent Claim
19 words
An electrode assembly as claimed in claim 1, wherein said chamber is air-tight and filled with a solid substance.
Claim 6
Dependent Claim
13 words
An electrode assembly as claimed in claim 4, said solid substance being titanium.
Claim 7
Dependent Claim
13 words
An electrode assembly as claimed in claim 4, said solid substance being steel.
Claim 8
Dependent Claim
14 words
An electrode assembly as claimed in claim 4, said solid substance being pig iron.
References Cited (Backward Citations)
US2922028A
Cited
US3089983A
Cited
US3198932A
Cited
US3375392A
Cited
US3272962A
Cited
US3408518A
Cited
US3546422A
Cited
US3780259A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-16 | 1979-09-15 | 1980-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-16 | 1983-09-15 | 1984-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-16 | 1987-09-15 | 1988-03-16 | $7700.00 | Window Closed / Lapsed |