Patent US3211892A successfully refreshed from Google Patents.
US3211892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Industrial radiant heating oven
Assignee: Auto Bake Inc
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Filing: 1961-10-09
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Granted: 1965-10-12
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Expires: 1981-10-09
Abstract
No abstract record available.
Inventors
- 👤 James W Swenson
- 👤 Donald D Watkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:54
CPC Classifications
F; F27; F27D; F27D11/00; F27D11/02; H; H05; H05B; H05B3/00; H05B3/62
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
130 words
THE METHOD OF HEATING AN ARTICLE TO A PREDETERMINED TEMPERATURE IN AN INDUSTRIAL RADIANT HEATING OVEN WHICH COMPRISES, PLACING SAID ARTICLE IN AN OVEN ENCLOSURE, SUBJECTING SAID ARTICLE TO RADIATED HEAT AND THEREBY HEATING SAID ARTICLE, CIRCULATING AIR IN A CLOSED CIRCUITOUS PATH PAST SAID ARTICLE WHILE IT IS BEING THUS HEATED AND THEREBY USING THE HEATED ARTICLE TO HEAT THE CIRCULATING AIR, CONTINUOUSLY OBTAINING A MEASUREMENT OF THE TEMPERATURE OF THE CIRCULATING AIR AT A POINT OUTSIDE OF THE CONFINES OF THE OVEN ENCLOSURE AND ADJACENT THE UPSTREAM END PORTION OF SAID AIR PATH, AND UTILIZING SAID TEMPERATURE MEASUREMENT TO REGULATE THE RATE OF ENERGY SUPPLIED TO THE SOURCE OF RADIANT HEAT, SO THAT THE ARTICLE BEING HEATED PROVIDES MEANS WHICH FACILITATES CONTROLLING THE AMOUNT OF HEAT RADIATED THERETO.
References Cited (Backward Citations)
US1944449A
Cited
US1896910A
Cited
US2040328A
Cited
US2439005A
Cited
US2504516A
Cited
US2472293A
Cited
US2521232A
Cited
US2807890A
Cited
US2898437A
Cited
US2841684A
Cited
US3051820A
Cited
US3003409A
Cited
US3009256A
Cited
US3002287A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |