US3312043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogen diffusion tubes
Assignee: Johnson Matthey PLC
•
Filing: 1964-11-12
•
Granted: 1967-04-04
•
Expires: 1984-11-12
Abstract
No abstract record available.
Inventors
- 👤 Sexton Peter Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:17
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/50; C01B3/501; C01B2203/00; C01B2203/04; C01B2203/0405
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
210 words
A CLOSING PLUG FOR SEALING AN OPEN END OF A HYDROGEN DIFFUSION TUBE COMPRISING A BODY PORTION FORMED OF TO ALSO FORM A LAYER OF MOLTEN FLUX VER THE METAL, SAID LAYER HAVING A DEPTH OF AT LEAST THREE-QUARTER INCH AND AT LEAST 10% OF THE HEIGHT OF THE MOLTEN METAL BODY, CHILLING THE MOLTEN METAL BODY AT THE BOTTOM SURFACE THEREOF TO PRODUCE A THERMAL-FLUX DENSITY OF HEAT EXTRACTION THROUGH THE BOTTOM SURFACE OF SAID BODY THAT IS GREATER THAN THE THERMAL-FLUX DENSITY OF HEAT EXTRACTION THROUGH THE SIDE SURFACE OF SAID BODY, COOLING AND SOLIDIFYING SAID BODY INTO AN INGOT HAVING A VERTICAL AXIS AND A HORIZONTAL TRANSVERSE AXIS WHILE MAINTAINING THE AFORESAID FLUX LAYER ON TOP OF SAID BODY TO INSULATE THE TOP SURFACE OF THE BODY, REMOVING SAID INGOT FROM THE MOLD DENSITY THROUGH THE TOP SURFACE OF THE BODY LESS THAN THE THERMAL-FLUX DENSITY OF HEAT EXTRACTION THROUGH THE SIDE SURFACE OF THE BODY, REMOVING SAID INGOT FROM THE MOLD AND REMOVING THE FLUX FROM SAID INGOT AND THEREAFTER WORKING SAID INGOT WITH PRESSURE EXERTED SUBSTANTIALLY PARALLEL TO THE VERTICAL AXIS OF THE INGOT TO FLOW THE METAL OF SAID INGOT TRANSVERSELY WITHOUT ELONGATION OF THE INGOT METAL ALONG THE VERTICAL AXIS OF SAID INGOT.
Claim 2
Dependent Claim
210 words
A CLOSING PLUG FOR SEALING AN OPEN END OF A HYDROGEN DIFFUSION TUBE COMPRISING A BODY PORTION FORMED OF TO ALSO FORM A LAYER OF MOLTEN FLUX VER THE METAL, SAID LAYER HAVING A DEPTH OF AT LEAST THREE-QUARTER INCH AND AT LEAST 10% OF THE HEIGHT OF THE MOLTEN METAL BODY, CHILLING THE MOLTEN METAL BODY AT THE BOTTOM SURFACE THEREOF TO PRODUCE A THERMAL-FLUX DENSITY OF HEAT EXTRACTION THROUGH THE BOTTOM SURFACE OF SAID BODY THAT IS GREATER THAN THE THERMAL-FLUX DENSITY OF HEAT EXTRACTION THROUGH THE SIDE SURFACE OF SAID BODY, COOLING AND SOLIDIFYING SAID BODY INTO AN INGOT HAVING A VERTICAL AXIS AND A HORIZONTAL TRANSVERSE AXIS WHILE MAINTAINING THE AFORESAID FLUX LAYER ON TOP OF SAID BODY TO INSULATE THE TOP SURFACE OF THE BODY, REMOVING SAID INGOT FROM THE MOLD DENSITY THROUGH THE TOP SURFACE OF THE BODY LESS THAN THE THERMAL-FLUX DENSITY OF HEAT EXTRACTION THROUGH THE SIDE SURFACE OF THE BODY, REMOVING SAID INGOT FROM THE MOLD AND REMOVING THE FLUX FROM SAID INGOT AND THEREAFTER WORKING SAID INGOT WITH PRESSURE EXERTED SUBSTANTIALLY PARALLEL TO THE VERTICAL AXIS OF THE INGOT TO FLOW THE METAL OF SAID INGOT TRANSVERSELY WITHOUT ELONGATION OF THE INGOT METAL ALONG THE VERTICAL AXIS OF SAID INGOT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-03 | 1970-10-03 | 1971-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-03 | 1974-10-03 | 1975-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-03 | 1978-10-03 | 1979-04-04 | $7700.00 | Window Closed / Lapsed |