Patent US3258255A successfully refreshed from Google Patents.
US3258255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal heating furnace
Assignee: Loftus Engineering Corp
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Filing: 1963-07-31
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Granted: 1966-06-28
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Expires: 1983-07-31
Abstract
No abstract record available.
Inventors
- 👤 Joseph J Tippmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:08
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/74
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
IN A METAL SLAB REHEATING FURNACE HAVING A HEATING SECTION PROVIDED WITH WATER-COOLED SKIDS SUPPORTING THE SLABS MOVING THERETHROUGH AND A SOAKING SECTION PROVIDED WITH A REFRACTORY HEARTH OVER WHICH THE SLABS MOVE AFTER LEAVING THE SAID SKIDS, THE COMBINATION OF, (A) A PLURALITY OF CHANNEL SHAPED LONGITUDINALLY EXTENDING RECESSES IN THE SURFACE OF SAID HEARTH ALIGNED WITH THE SAID WATER-COOLED SKIDS, (B) EACH SAID RECESSES HAVING A REFRACTORY COVERING MEANS SUPPORTED THEREIN WITH THE BOTTOM FACE OF THE COVERING MEANS SPACED ABOVE THE BOTTOM OF THE RECESS PROVIDING A TUNNEL FOR PASSAGE OF COMBUSTION GASES AND
Claim 2
Dependent Claim
97 words
IN A METAL SLAB REHEATING FURNACE HAVING A HEATING SECTION PROVIDED WITH WATER-COOLED SKIDS SUPPORTING THE SLABS MOVING THERETHROUGH AND A SOAKING SECTION PROVIDED WITH A REFRACTORY HEARTH OVER WHICH THE SLABS MOVE AFTER LEAVING THE SAID SKIDS, THE COMBINATION OF, (A) A PLURALITY OF CHANNEL SHAPED LONGITUDINALLY EXTENDING RECESSES IN THE SURFACE OF SAID HEARTH ALIGNED WITH THE SAID WATER-COOLED SKIDS, (B) EACH SAID RECESSES HAVING A REFRACTORY COVERING MEANS SUPPORTED THEREIN WITH THE BOTTOM FACE OF THE COVERING MEANS SPACED ABOVE THE BOTTOM OF THE RECESS PROVIDING A TUNNEL FOR PASSAGE OF COMBUSTION GASES AND
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |