Patent US3361419A successfully refreshed from Google Patents.
US3361419A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air preheating burner with furnace preheating passage cleaner means
Assignee: Selas Corp of America
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Filing: 1966-05-10
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Granted: 1968-01-02
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Expires: 1986-05-10
Abstract
No abstract record available.
Inventors
- 👤 Ernst A Siemssen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:48
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/46; F23D14/66; C; C04; C04B; C04B20/00; C04B20/02; C04B20/04; C04B20/06; Y; Y02; Y02E; Y02E20/00; Y02E20/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
IN A FURNACE STRUCTURE INCLUDING A WALL FORMING A FURNACE CHAMBER, A BURNER BLOCK IN SAID WALL, SAID BLOCK BEING PROVIDED WITH AN OPENING THEREIN EXTENDING FROM SAID CHAMBER TO THE OUTSIDE THEREOF, A BURNER INCLUDING A BODY RECEIVED IN SAID OPENING, SAID BURNER BEING OPERATIVE TO FIRE INTO SAID CHAMBER, THE PORTION OF SAID OPENING AWAY FROM SAID CHAMBER BEING LARGER THAN SAID BODY TO FORM A SPACE THEREBETWEN, MEANS FORMING A PASSAGE EXTENDING THROUGH SAID WALL FROM SAID CHAMBER AT ONE SIDE OF SAID BURNER BLOCK TO SAID SPACE WHEREBY COMBUSTION GAGES CAN FLOW FROM SAID CHAMBER THROUGH SAID PAS-
Claim 2
Dependent Claim
102 words
IN A FURNACE STRUCTURE INCLUDING A WALL FORMING A FURNACE CHAMBER, A BURNER BLOCK IN SAID WALL, SAID BLOCK BEING PROVIDED WITH AN OPENING THEREIN EXTENDING FROM SAID CHAMBER TO THE OUTSIDE THEREOF, A BURNER INCLUDING A BODY RECEIVED IN SAID OPENING, SAID BURNER BEING OPERATIVE TO FIRE INTO SAID CHAMBER, THE PORTION OF SAID OPENING AWAY FROM SAID CHAMBER BEING LARGER THAN SAID BODY TO FORM A SPACE THEREBETWEN, MEANS FORMING A PASSAGE EXTENDING THROUGH SAID WALL FROM SAID CHAMBER AT ONE SIDE OF SAID BURNER BLOCK TO SAID SPACE WHEREBY COMBUSTION GAGES CAN FLOW FROM SAID CHAMBER THROUGH SAID PAS-
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) | 1971-01-01 | 1971-07-03 | 1972-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-01 | 1975-07-03 | 1976-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-01 | 1979-07-03 | 1980-01-02 | $7700.00 | Window Closed / Lapsed |