Patent US3091445A successfully refreshed from Google Patents.
US3091445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined furnace heater and circulator
Assignee: Sunbeam Equipment Corp
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Filing: 1959-10-22
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Granted: 1963-05-28
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Expires: 1979-10-22
Abstract
No abstract record available.
Inventors
- 👤 John J Toney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:19
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/74; C21D1/767; F; F26; F26B; F26B21/00; F26B21/001
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
IN AN INDUSTRIAL FURANCE HAVING AN OPEN ENDED HEAT TREATING CHAMBER DEFINING MEANS THEREIN, A SIDE WALL OF SAID FURANCE HAVING AN OPENING THEREIN FOR MOVING SAID CHAMBER DEFINING MEANS WHEN ASSEMBLED INTO AND OUT OF SAID FURANCE, SAID SIDE WALL OPENING BEING CLOSED BY REMOVABLE WALL CLOSURE MEANS, A COMBINED HEATER AND FAN UNIT FOR HEATING THE FURANCE ATMOSPHERE AND CIRCULATING IT THROUGH SAID CHAMBER DEFINING MEANS, SAID UNIT COMPRISING A ROTATABLY MOUNTED HOLLOW SHAFT EXTENDING THROUGH SAID CLOSURE MEANS, THE INNER END OF SAID SHAFT HAVING FAN BLADES AND RADIALLY DISPOSED HOLLOW ARMS THEREON WHICH ARE POSITIONED INSIDE SAID FURANCE JET REACTION BURNERS ON THE OUTER ENDS OF SAID ARMS, AND MEANS CONNECTED TO THE OUTER END OF SAID SHAFT OUTSIDE OF SAID FURNACE FOR SUPPLYING SAID BURNERS WITH AN AIRFUEL MIXTURE TO HEAT SAID ATMOSPHERE AND ROTATE SAID FAN BLADES.
Claim 2
Dependent Claim
143 words
IN AN INDUSTRIAL FURANCE HAVING AN OPEN ENDED HEAT TREATING CHAMBER DEFINING MEANS THEREIN, A SIDE WALL OF SAID FURANCE HAVING AN OPENING THEREIN FOR MOVING SAID CHAMBER DEFINING MEANS WHEN ASSEMBLED INTO AND OUT OF SAID FURANCE, SAID SIDE WALL OPENING BEING CLOSED BY REMOVABLE WALL CLOSURE MEANS, A COMBINED HEATER AND FAN UNIT FOR HEATING THE FURANCE ATMOSPHERE AND CIRCULATING IT THROUGH SAID CHAMBER DEFINING MEANS, SAID UNIT COMPRISING A ROTATABLY MOUNTED HOLLOW SHAFT EXTENDING THROUGH SAID CLOSURE MEANS, THE INNER END OF SAID SHAFT HAVING FAN BLADES AND RADIALLY DISPOSED HOLLOW ARMS THEREON WHICH ARE POSITIONED INSIDE SAID FURANCE JET REACTION BURNERS ON THE OUTER ENDS OF SAID ARMS, AND MEANS CONNECTED TO THE OUTER END OF SAID SHAFT OUTSIDE OF SAID FURNACE FOR SUPPLYING SAID BURNERS WITH AN AIRFUEL MIXTURE TO HEAT SAID ATMOSPHERE AND ROTATE SAID FAN BLADES.
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) | 1966-05-27 | 1966-11-26 | 1967-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-27 | 1970-11-26 | 1971-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-27 | 1974-11-26 | 1975-05-28 | $7700.00 | Window Closed / Lapsed |