US3380904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Confining the reaction zone in a plasma arc by solidifying a confining shell around the zone
Assignee: Development Corp
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Filing: 1965-04-20
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Granted: 1968-04-30
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Expires: 1985-04-20
Abstract
No abstract record available.
Inventors
- 👤 William M Goldberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:54
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/32; H01J37/32009; H01J37/32055; B; B01; B01J; B01J15/00; B01J19/00; B01J19/08; B01J19/087; B01J19/088; B01J8/00; B01J8/18; B01J8/24; C; C01; C01B; C01B25/00; C01B25/02; C01B25/027; C22; C22B; C22B4/00; C22B4/005; C22B9/00; C22B9/16; C22B9/22; C22B9/226; B01J2219/00; B01J2219/08; B01J2219/0894; Y; Y10; Y10S; Y10S422/00; Y10S422/906
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
149 words
THE METHOD OF BRINGING PARTICULATE MATERIAL INTO INTIMATE CONTACT WITH THE REACTION ZONE OF A PLASMA ARC, COMPRISING: (A) SURROUNDING SAID ZONE WITH SPACED SUPPORTING STRUCTURES; (B) MAINTAINING SAID SUPPORTING STRUCTURES AT A LOWER TEMPERATURE THAN SAID REACTION ZONE; (C) INTRODUCING PARTICLES INTO SAID ZONE, SAID PARTICLES BEING DISPOSED TO MELT AT THE TEMPERATURE OF SAID REACTION ZONE AND SOLIDIFY AT THE TEMPERATURE OF SAID SPACED SUPPORTING STRUCTURES SO THAT AT LEAST A PORTION OF SAID PARTICLES WILL DEPOSIT ON SAID SUPPORTING STRUCTURES IN THE MOLTEN STATE AND SOLIDIFY ON SAID STRUCTURES TO BUILD A REACTION ZONE CONFINING SHELL ON SAID SUPPORTING STRUCTURES HAVING A MOLTEN INNER SURFACE; AND (D) PASSING PARTICULATE MATERIALS THROUGH SAID SPACED SUPPORTING STRUCTURES AND SHELL SO THAT AT LEAST A PORTION OF SAID PARTICULATE MATERIALS BECOME ENTRAPPED IN SAID MOLTEN SURFACE AND THE REMAINDER ARE CONDUCTED THROUGH THE HIGHER TEMPERATURES OF SAID HIGH-TEMPERATURE ZONE.
Claim 2
Independent Claim
149 words
THE METHOD OF BRINGING PARTICULATE MATERIAL INTO INTIMATE CONTACT WITH THE REACTION ZONE OF A PLASMA ARC, COMPRISING: (A) SURROUNDING SAID ZONE WITH SPACED SUPPORTING STRUCTURES; (B) MAINTAINING SAID SUPPORTING STRUCTURES AT A LOWER TEMPERATURE THAN SAID REACTION ZONE; (C) INTRODUCING PARTICLES INTO SAID ZONE, SAID PARTICLES BEING DISPOSED TO MELT AT THE TEMPERATURE OF SAID REACTION ZONE AND SOLIDIFY AT THE TEMPERATURE OF SAID SPACED SUPPORTING STRUCTURES SO THAT AT LEAST A PORTION OF SAID PARTICLES WILL DEPOSIT ON SAID SUPPORTING STRUCTURES IN THE MOLTEN STATE AND SOLIDIFY ON SAID STRUCTURES TO BUILD A REACTION ZONE CONFINING SHELL ON SAID SUPPORTING STRUCTURES HAVING A MOLTEN INNER SURFACE; AND (D) PASSING PARTICULATE MATERIALS THROUGH SAID SPACED SUPPORTING STRUCTURES AND SHELL SO THAT AT LEAST A PORTION OF SAID PARTICULATE MATERIALS BECOME ENTRAPPED IN SAID MOLTEN SURFACE AND THE REMAINDER ARE CONDUCTED THROUGH THE HIGHER TEMPERATURES OF SAID HIGH-TEMPERATURE ZONE.
Claim 3
Dependent Claim
132 words
APPARATUS FOR BRINGING MATERIALS INTO INTIMATE CONTACT WITH THE REACTION ZONE OF A PLASMA ARC COMPRISING: (A) SUBSTANTIALLY VERTICALLY POSITIONED ELECTRODES HAVING A GAP THEREBETWEEN AND DISPOSED TO FORM A VERTICAL ARC IN SAID GAP; (B) MEANS FOR EFFECTING AN ELECTRIC POTENTIAL TO SAID ELECTRODES TO CREATE SAID ARC; AND (C) A HOUSING POSITIONED AROUND THE GAP OF SAID ELECTRODES; SAID HOUSING BEING FORMED WITH AT LEAST ONE ENTRY PORT ABOVE SAID GAP AND AT LEAST ONE EXIT OPENING BELOW SAID GAP SO THAT REFRACTORY PARTICLES MAY BE SUPPLIED TO THE REACTION ZONE OF SAID ARC BY MEANS OF A CARRIER GAS INTRODUCED INTO SAID HOUSING THROUGH SAID AT LEAST ONE ENTRY PORT TO MELT AND SOLIDIFY ON SAID INNER WALLS AND FORM A REACTION ZONE RESTRICTING SHELL FROM SAID REFRACTORY PARTICLES.
Claim 4
Dependent Claim
132 words
APPARATUS FOR BRINGING MATERIALS INTO INTIMATE CONTACT WITH THE REACTION ZONE OF A PLASMA ARC COMPRISING: (A) SUBSTANTIALLY VERTICALLY POSITIONED ELECTRODES HAVING A GAP THEREBETWEEN AND DISPOSED TO FORM A VERTICAL ARC IN SAID GAP; (B) MEANS FOR EFFECTING AN ELECTRIC POTENTIAL TO SAID ELECTRODES TO CREATE SAID ARC; AND (C) A HOUSING POSITIONED AROUND THE GAP OF SAID ELECTRODES; SAID HOUSING BEING FORMED WITH AT LEAST ONE ENTRY PORT ABOVE SAID GAP AND AT LEAST ONE EXIT OPENING BELOW SAID GAP SO THAT REFRACTORY PARTICLES MAY BE SUPPLIED TO THE REACTION ZONE OF SAID ARC BY MEANS OF A CARRIER GAS INTRODUCED INTO SAID HOUSING THROUGH SAID AT LEAST ONE ENTRY PORT TO MELT AND SOLIDIFY ON SAID INNER WALLS AND FORM A REACTION ZONE RESTRICTING SHELL FROM SAID REFRACTORY PARTICLES.
References Cited (Backward Citations)
US2709183A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |