US3334879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination furnace and forge
Assignee: SIEVERT APPARATER AB
•
Filing: 1964-12-30
•
Granted: 1967-08-08
•
Expires: 1984-12-30
Abstract
No abstract record available.
Inventors
- 👤 Nordling Johan Axel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:56
CPC Classifications
B; B21; B21J; B21J19/00; B21J19/02; B21J17/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
IN APPARATUS OF THE CHARACTER DESCRIBED FOR USE AS A COMBINATION FURNACE AND FORGE AND HAVING A TWO-PART ELONGATED FIREPROOF CASING WITH A SUBSTANTIALLY CYLINDRICAL HEATING CHAMBER DISPOSED THEREIN, SAID CASING HAVING OPENINGS AT EACH END THEREOF COMMUNICATING WITH SAID CHAMBER AND BEING DIVIDED ALONG A VERTICAL PLANE THROUGH THE AXIS OF SAID CHAMBER, THE COMBINATION WHICH COMPRISES A HINGE CONNECTION INTERCONNECTING THE TWO PARTS OF SAID CASING AT THE TOP THEREOF FOR PIVOTING THE FRONT PART OF SAID CASING FROM A CLOSED POSITION ADJACENT THE REAR PART OF SAID CASING TO FORM SAID CHAMBER TO AN OPEN POSITION ABOVE SAID REAR PART, A SUBSTANTIALLY HORIZONTAL EXTENSION DISPOSED ON SAID REAR PART AND EXTENDING BELOW AND BEYOND SAID FRONT PART FOR PROVIDING A HEAT-RESISTANT WORKING SURFACE IN FRONT OF SAID CHAMBER, AND A FRONT OPENING DISPOSED CENTRALLY IN SAID FRONT PART PROVIDING FLAME ACCESS FROM A SPACED-APART FLAME SOURCE INTO SAID CHAMBER WHEN SAID FRONT IS IN CLOSED POSITION.
Claim 2
Dependent Claim
159 words
IN APPARATUS OF THE CHARACTER DESCRIBED FOR USE AS A COMBINATION FURNACE AND FORGE AND HAVING A TWO-PART ELONGATED FIREPROOF CASING WITH A SUBSTANTIALLY CYLINDRICAL HEATING CHAMBER DISPOSED THEREIN, SAID CASING HAVING OPENINGS AT EACH END THEREOF COMMUNICATING WITH SAID CHAMBER AND BEING DIVIDED ALONG A VERTICAL PLANE THROUGH THE AXIS OF SAID CHAMBER, THE COMBINATION WHICH COMPRISES A HINGE CONNECTION INTERCONNECTING THE TWO PARTS OF SAID CASING AT THE TOP THEREOF FOR PIVOTING THE FRONT PART OF SAID CASING FROM A CLOSED POSITION ADJACENT THE REAR PART OF SAID CASING TO FORM SAID CHAMBER TO AN OPEN POSITION ABOVE SAID REAR PART, A SUBSTANTIALLY HORIZONTAL EXTENSION DISPOSED ON SAID REAR PART AND EXTENDING BELOW AND BEYOND SAID FRONT PART FOR PROVIDING A HEAT-RESISTANT WORKING SURFACE IN FRONT OF SAID CHAMBER, AND A FRONT OPENING DISPOSED CENTRALLY IN SAID FRONT PART PROVIDING FLAME ACCESS FROM A SPACED-APART FLAME SOURCE INTO SAID CHAMBER WHEN SAID FRONT IS IN CLOSED POSITION.
References Cited (Backward Citations)
US202533A
Cited
US494484A
Cited
US509146A
Cited
US1004200A
Cited
US1230593A
Cited
US1599165A
Cited
US2416412A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-07 | 1971-02-06 | 1971-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-07 | 1975-02-06 | 1975-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-07 | 1979-02-06 | 1979-08-08 | $7700.00 | Window Closed / Lapsed |