Patent US3199570A successfully refreshed from Google Patents.
US3199570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Industrial burner
Assignee: Selas Corp of America
•
Filing: 1963-05-28
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Granted: 1965-08-10
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Expires: 1983-05-28
Abstract
No abstract record available.
Inventors
- 👤 John R Williams
- 👤 Feng Chung Liao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:53
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/12; F23D14/125
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
AN INDUSTRIAL BURNER COMPRISING A PLURALITY OF REFRACTORY BLOCKS, EACH BLOCK BEING PROVIDED WITH A CUP-SHAPED DEPRESSION ON ONE SURFACE THEREOF, STRUCTURE INCLUDING SIDE PLATES SUPPORTING SAID BLOCKS SIDE BY SIDE WITH SAID SURFACES EXPOSED FLEXIBLE MEANS TO SEPARATE SAID BLOCKS FROM EACH OTHER AND FROM SAID SIDE PLATES. MEANS EXTENDING THROUGH SAID STRUCTURE AND BLOCKS INTO THE BASE OF EACH DEPRESSION TO HOLD SAID BLOCKS ON SAID STRUCTURE AND THROUGH WHICH FUEL IS SUPPLIED TO BURN ALONG THE SURFACES OF SAID DEPRESSIONS, A SCREEN EXTENDING OVER EACH OF SAID BLOCKS, SAID SCREENS BEING CLOSELY WOVEN THEREBY TO RETARD THE FLOW OF COMBUSTION GASES THERETHROUGH, MEANS TO FASTEN SAID SCREENS LOOSELY TO SAID SIDE PLATES AT OPPOSITE SIDES OF EACH BLOCK, AND MEANS TO FASTEN SAID SCREENS
Claim 2
Dependent Claim
127 words
AN INDUSTRIAL BURNER COMPRISING A PLURALITY OF REFRACTORY BLOCKS, EACH BLOCK BEING PROVIDED WITH A CUP-SHAPED DEPRESSION ON ONE SURFACE THEREOF, STRUCTURE INCLUDING SIDE PLATES SUPPORTING SAID BLOCKS SIDE BY SIDE WITH SAID SURFACES EXPOSED FLEXIBLE MEANS TO SEPARATE SAID BLOCKS FROM EACH OTHER AND FROM SAID SIDE PLATES. MEANS EXTENDING THROUGH SAID STRUCTURE AND BLOCKS INTO THE BASE OF EACH DEPRESSION TO HOLD SAID BLOCKS ON SAID STRUCTURE AND THROUGH WHICH FUEL IS SUPPLIED TO BURN ALONG THE SURFACES OF SAID DEPRESSIONS, A SCREEN EXTENDING OVER EACH OF SAID BLOCKS, SAID SCREENS BEING CLOSELY WOVEN THEREBY TO RETARD THE FLOW OF COMBUSTION GASES THERETHROUGH, MEANS TO FASTEN SAID SCREENS LOOSELY TO SAID SIDE PLATES AT OPPOSITE SIDES OF EACH BLOCK, AND MEANS TO FASTEN SAID SCREENS
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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) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |