US3172734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
warren
Assignee: —
•
Filing: —
•
Granted: 1965-03-09
•
Expires: 1982-03-09
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:40
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/02; H05B6/22; H05B6/32; B; B01; B01J; B01J6/00; B01J6/005; C; C01; C01B; C01B33/00; C01B33/02; C01B33/021; C01B33/027; C01B33/029; C01B35/00; C01B35/02; C01B35/023; C22; C22B; C22B34/00; C22B34/10; C22B4/00; C22B41/00; C22B60/00; C22B60/02; C22B60/0204; C22B60/0286; C22B9/00; C22B9/02; C30; C30B; C30B13/00; C30B13/14; C30B13/16; C30B13/18; C30B13/20; C30B15/00; C30B15/10; C30B15/14; F; F27; F27B; F27B3/00; F27B3/08; F27B3/085; Y; Y02; Y02P; Y02P10/00; Y02P10/20; Y02P10/25; Y10; Y10S; Y10S117/00; Y10S117/90; Y10T; Y10T117/00; Y10T117/10; Y10T117/1024; Y10T117/1076; Y10T117/108
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
APPARATUS FOR PROCESSING FUSIBLE MATERIAL COMPRISING AN OPEN ELONGATED HOLLOW WALLED VESSEL OF SUBSTANTIALLY PURE METAL OF HIGH ELECTRICAL AND THERMAL CONDUCTIVITY WHICH IS SUBSTANTIALLY NON-REACTIVE WITH THE MATERIAL BEING TREATED, MEANS FOR CIRCULATING COLLING FLUID THROUGH THE HOLLOW WALLS OF SAID CRUCIBLE, A HEATING COIL SURROUNDING A PORTION OF SAID VESSEL, MEANS FOR PASSING THROUGH SAID COIL ALTERNATING CURRENT OF SUCH VALUE AS TO MELT A LIMITED ZONE OF SAID FUSIBLE MATERIAL AND MEANS FOR CAUSING RELATIVE MOVEMENT BETWEEN SAID COIL AND SAID CRUCIBLE TO MELT SUCCESSIVE LIMITED ZONES OF SAID MATERIAL.
Claim 2
Dependent Claim
93 words
APPARATUS FOR PROCESSING FUSIBLE MATERIAL COMPRISING AN OPEN ELONGATED HOLLOW WALLED VESSEL OF SUBSTANTIALLY PURE METAL OF HIGH ELECTRICAL AND THERMAL CONDUCTIVITY WHICH IS SUBSTANTIALLY NON-REACTIVE WITH THE MATERIAL BEING TREATED, MEANS FOR CIRCULATING COLLING FLUID THROUGH THE HOLLOW WALLS OF SAID CRUCIBLE, A HEATING COIL SURROUNDING A PORTION OF SAID VESSEL, MEANS FOR PASSING THROUGH SAID COIL ALTERNATING CURRENT OF SUCH VALUE AS TO MELT A LIMITED ZONE OF SAID FUSIBLE MATERIAL AND MEANS FOR CAUSING RELATIVE MOVEMENT BETWEEN SAID COIL AND SAID CRUCIBLE TO MELT SUCCESSIVE LIMITED ZONES OF SAID MATERIAL.
References Cited (Backward Citations)
US2768074A
Cited
US2686865A
Cited
US2785058A
Cited
US2719799A
Cited
US2872299A
Cited
US2836412A
Cited
US2880117A
Cited
US2870309A
Cited
US2897329A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-08 | 1968-09-07 | 1969-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-08 | 1972-09-07 | 1973-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-08 | 1976-09-07 | 1977-03-09 | $7700.00 | Window Closed / Lapsed |