US3436465A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods and arrangements for melting material which melts only with difficulty
Assignee: Philips North America LLC
•
Filing: 1965-11-17
•
Granted: 1969-04-01
•
Expires: 1985-11-17
Abstract
No abstract record available.
Inventors
- 👤 Jacob Willem De Ruiter
- 👤 Anton Willemstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:11
CPC Classifications
H; H05; H05H; H05H1/00; H05H1/24; H05H1/26; H05H1/30; B; B01; B01J; B01J6/00; B01J6/005; C; C22; C22B; C22B9/00; C22B9/16; C22B9/22; C22B9/226; C30; C30B; C30B11/00; C30B11/04; C30B11/08; C30B11/10; F; F27; F27D; F27D11/00; F27D11/06; H05B; H05B11/00; Y; Y02; Y02P; Y02P10/00; Y02P10/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A METHOD OF MELTING MATERIALS WHICH MELT ONLY AT RELATIVELY HIGH TEMPERATURES COMPRISING SUPPLYING GASES SUITABLE FOR PRODUCING AN ELECTRIC DISCHARGE IN A WORKING SPACE SURROUNDED BY A SHEATH OF HIGH MELTING POINT MATERIAL, MAINTAINING SAID GAS DISCHARGE IN SAID SHEATH BY THE INDUCTION FIELD OF A HIGH FREQUENCY COIL, ROTATING SAID SHEATH WHILE SAID MELTING MATERIALS ARE SUPPLIED TO SAID WORKING SPACE IN A PULVERULENT STATE, THE SPEED OR ROTATION BEING SUCH THAT THE MATERIAL POWDER SPREADS ALONG THE INNER SIDE OF SAID SHEAT TO FORM A WALL LAYER, AND HEATING SAID WALL LAYER TO ITS MELTING TEMPERATURE BY THE HEAT DEVELOPED BY SAID GAS DISCHARGE.
Claim 2
Independent Claim
107 words
A METHOD OF MELTING MATERIALS WHICH MELT ONLY AT RELATIVELY HIGH TEMPERATURES COMPRISING SUPPLYING GASES SUITABLE FOR PRODUCING AN ELECTRIC DISCHARGE IN A WORKING SPACE SURROUNDED BY A SHEATH OF HIGH MELTING POINT MATERIAL, MAINTAINING SAID GAS DISCHARGE IN SAID SHEATH BY THE INDUCTION FIELD OF A HIGH FREQUENCY COIL, ROTATING SAID SHEATH WHILE SAID MELTING MATERIALS ARE SUPPLIED TO SAID WORKING SPACE IN A PULVERULENT STATE, THE SPEED OR ROTATION BEING SUCH THAT THE MATERIAL POWDER SPREADS ALONG THE INNER SIDE OF SAID SHEAT TO FORM A WALL LAYER, AND HEATING SAID WALL LAYER TO ITS MELTING TEMPERATURE BY THE HEAT DEVELOPED BY SAID GAS DISCHARGE.
References Cited (Backward Citations)
US3124633A
Cited
US3250842A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-31 | 1972-09-30 | 1973-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-31 | 1976-09-30 | 1977-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-31 | 1980-09-30 | 1981-04-01 | $7700.00 | Window Closed / Lapsed |