US2829879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bottoms for metallurgical furnaces of the bessemer converter type
Assignee: Huettenwerk Haspe AG
•
Filing: 1954-06-25
•
Granted: 1958-04-08
•
Expires: 1974-06-25
Abstract
No abstract record available.
Inventors
- 👤 Kosmider Hans
- 👤 Hardt Paul Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:01
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/42; C21C5/46; C21C5/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A BOTTOM FOR A METULLURGICAL FURNACE OF THE BESSEMER CONVERTER TYPE, SAID BOTTOM COMPRISING A MASS OF REFRACTORY MATERIAL WHICH OCCUPIES A MAJOR PORTION OF THE DEPTH OF SAID BOTTOM, AND A PLURALITY OF COPPER TUBES EMBEDDED IN SAID REFRACTORY MATERIAL AND EXTENDING COMPLETELY THROUGH SAID REFRACTORY MATERIAL TO PROVIDE BLAST PASSAGES FOR SAID FURNACE, EACH OF SAID TUBES CONSISTING OF A SINGLE WALL OF COPPER, SAID COPPER TUBES HAVING A SMALLER OXYGEN AFFINITY THAN IRON AND VERY HIGH HEAT CONDUCTIVITY WHEREBY CRATERING OF THE REFRACTORY MATERIAL IN THE VICINITY OF THE TUBES IS SUBSTANTIALLY LESSENED AND IT IS UNNECESSARY TO WATER COOL THE TUBES.
Claim 2
Dependent Claim
105 words
A BOTTOM FOR A METULLURGICAL FURNACE OF THE BESSEMER CONVERTER TYPE, SAID BOTTOM COMPRISING A MASS OF REFRACTORY MATERIAL WHICH OCCUPIES A MAJOR PORTION OF THE DEPTH OF SAID BOTTOM, AND A PLURALITY OF COPPER TUBES EMBEDDED IN SAID REFRACTORY MATERIAL AND EXTENDING COMPLETELY THROUGH SAID REFRACTORY MATERIAL TO PROVIDE BLAST PASSAGES FOR SAID FURNACE, EACH OF SAID TUBES CONSISTING OF A SINGLE WALL OF COPPER, SAID COPPER TUBES HAVING A SMALLER OXYGEN AFFINITY THAN IRON AND VERY HIGH HEAT CONDUCTIVITY WHEREBY CRATERING OF THE REFRACTORY MATERIAL IN THE VICINITY OF THE TUBES IS SUBSTANTIALLY LESSENED AND IT IS UNNECESSARY TO WATER COOL THE TUBES.
References Cited (Backward Citations)
DE9354C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-07 | 1961-10-07 | 1962-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-07 | 1965-10-07 | 1966-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-07 | 1969-10-07 | 1970-04-08 | $7700.00 | Window Closed / Lapsed |