US3086764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tandem furnace
Assignee: Individual
•
Filing: 1961-04-18
•
Granted: 1963-04-23
•
Expires: 1981-04-18
Abstract
No abstract record available.
Inventors
- 👤 Beck Jacob Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:09
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/74
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A FURNACE FOR HEAT TREATING ARTICLES COMPRISING, AN ELONGATE UNITARY MUFFLE ADAPTED TO BE HEATED AND PROVIDING A CONTINUOUS OPEN-ENDED PASSAGEWAY OF PREDETERMINED MINIMUM CROSS-SECTION, MEANS FOR INTRODUCING A CONTINUOUS FLOW OF GAS TO THE INTERIOR OF SAID PASSAGEWAY AT ONE POINT AND REMOVING SAID GAS AT ANOTHER POINT, MEANS FOR PROVIDING GASEOUS CURTAINS AT EITHER END OF SAID PASSAGEWAY FOR ISOLATING SAID GAS FROM THE OUTER ATMOSPHERE, A CONTINUOUS PERFORATED WEB CONVEYOR PASSING THROUGH SAID PASSAGEWAY, AND A PLURALITY OF TRANSVERSELY EXTENDING BAFFLE ELEMENTS ON SAID CONVEYOR FOR CHANNELING SAID GAS VERTICALLY AROUND INDIVIDUAL ARTICLES TO BE TREATED DISPOSED ON SAID CONVEYOR, SAID BAFFLE ELEMENTS SIZED TO SUBSTANTIALLY FILL SAID PASSAGEWAY AT THE MINIMUM CROSS SECTION THEREOF, WHEREBY TO HINDER MIGRATION OF GAS LONGITUDINALLY OF SAID PASSAGEWAY.
Claim 2
Dependent Claim
128 words
A FURNACE FOR HEAT TREATING ARTICLES COMPRISING, AN ELONGATE UNITARY MUFFLE ADAPTED TO BE HEATED AND PROVIDING A CONTINUOUS OPEN-ENDED PASSAGEWAY OF PREDETERMINED MINIMUM CROSS-SECTION, MEANS FOR INTRODUCING A CONTINUOUS FLOW OF GAS TO THE INTERIOR OF SAID PASSAGEWAY AT ONE POINT AND REMOVING SAID GAS AT ANOTHER POINT, MEANS FOR PROVIDING GASEOUS CURTAINS AT EITHER END OF SAID PASSAGEWAY FOR ISOLATING SAID GAS FROM THE OUTER ATMOSPHERE, A CONTINUOUS PERFORATED WEB CONVEYOR PASSING THROUGH SAID PASSAGEWAY, AND A PLURALITY OF TRANSVERSELY EXTENDING BAFFLE ELEMENTS ON SAID CONVEYOR FOR CHANNELING SAID GAS VERTICALLY AROUND INDIVIDUAL ARTICLES TO BE TREATED DISPOSED ON SAID CONVEYOR, SAID BAFFLE ELEMENTS SIZED TO SUBSTANTIALLY FILL SAID PASSAGEWAY AT THE MINIMUM CROSS SECTION THEREOF, WHEREBY TO HINDER MIGRATION OF GAS LONGITUDINALLY OF SAID PASSAGEWAY.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-22 | 1966-10-22 | 1967-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-22 | 1970-10-22 | 1971-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-22 | 1974-10-22 | 1975-04-23 | $7700.00 | Window Closed / Lapsed |