Furnace having structure for feeding work through a heat tunnel
Abstract
Abstract A FURNACE HAVING AN ELONGATED HEAT TUNNEL THROUGH WHICH THE WORK PASSES TO BE HEATED THEREIN. A PAIR OF SETS OF BEAMS EXTEND LONGITUDINALLY OF THE HEAT TUNNEL AND FORM A FLOOR THEREOF FOR SUPPORTING WORK, AND AT LEAST ONE OF THE SETS OF BEAMS IS CYCLICALLY MOVABLE WITH RESPECT TO THE OTHER IN SUCH WAY THAT THIS ONE MOVABLE SET OF BEAMS MOVE UPWARDLY AND FORWARDLY WITH RESPECT TO AND DOWNWARDLY AND REARWARDLY WITH RESPECT TO THE OTHER SET OF BEAMS TO PROVIDE IN THIS WAY A STEPWISE ADVANCE OF THE WORK THROUGH THE TUNNEL. THE BEAMS HAVE LATERALLY OFFSET WORK-ENGAGING SURFACES TO PROVIDE MORE UNIFORM HEAT DISTRIBUTION AT THE LOWER SURFACES TO PROVIDE A WORK. ALSO, THE STRUCTURE WHICH CONTROLS THE MOVEMENT OF THE BEAMS PROVIDES FOR THE LATTER A SMOOTH, GRADUAL MOVEMENT WHEN THE WORK IS RAISED UP FROM AND AGAIN SET DOWN ON THE UPPER SURFACES OF THE BEAMS.
Inventors
- 👤 Heinz Brockmann
Bibliographic Details
Claims Analysis
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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) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |