US3129933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tunnel furnace arrangement
Assignee: Individual
•
Filing: 1959-10-06
•
Granted: 1964-04-21
•
Expires: 1979-10-06
Abstract
No abstract record available.
Inventors
- 👤 Cremer Gottfried
- 👤 Behrens Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:26
CPC Classifications
F; F27; F27B; F27B9/00; F27B9/30; F27B9/3005; F27B9/3011; F27B9/14; F27B9/20; F27B9/26; F27B9/262
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A FURNACE ARRANGEMENT, COMPRISING, IN COMBINATION: A TUNNEL FURNACE HAVING A LONGITUDINAL AXIS; INTERMITTENTLY OPERATED IMPULSE BURNERS ARRANGED AT AT LEAST ONE SIDE OF SAID TUNNEL FURNACE FOR SPRAYING OIL IN A HORIZONTAL DIRECTION TRANSVERSE TO SAID LONGITUDINAL AXIS; AND CARRIER MEANS ARRANGED FOR MOVEMENT THROUGH SAID TUNNEL FURNACE IN THE DIRECTION OF SAID LONGITUDINAL AXIS THEREOF, SAID CARRIER MEANS BEING FORMED WITH A SUPPORT HAVING A SUPPORT SURFACE FOR SUPPORTING MATERIAL TO BE HEATED AND UPWARDLY EXTENDING PASSAGES LEADING TO AND OPENING AT SAID SUPPORT SURFACE, AND WITH COMBUSTION CHAMBERS ARRANGED BELOW SAID SUPPORT SURFACE AND EX-
Claim 2
Dependent Claim
98 words
A FURNACE ARRANGEMENT, COMPRISING, IN COMBINATION: A TUNNEL FURNACE HAVING A LONGITUDINAL AXIS; INTERMITTENTLY OPERATED IMPULSE BURNERS ARRANGED AT AT LEAST ONE SIDE OF SAID TUNNEL FURNACE FOR SPRAYING OIL IN A HORIZONTAL DIRECTION TRANSVERSE TO SAID LONGITUDINAL AXIS; AND CARRIER MEANS ARRANGED FOR MOVEMENT THROUGH SAID TUNNEL FURNACE IN THE DIRECTION OF SAID LONGITUDINAL AXIS THEREOF, SAID CARRIER MEANS BEING FORMED WITH A SUPPORT HAVING A SUPPORT SURFACE FOR SUPPORTING MATERIAL TO BE HEATED AND UPWARDLY EXTENDING PASSAGES LEADING TO AND OPENING AT SAID SUPPORT SURFACE, AND WITH COMBUSTION CHAMBERS ARRANGED BELOW SAID SUPPORT SURFACE AND EX-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-21 | 1967-10-21 | 1968-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-21 | 1971-10-21 | 1972-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-21 | 1975-10-21 | 1976-04-21 | $7700.00 | Window Closed / Lapsed |