Patent US3353528A successfully refreshed from Google Patents.
US3353528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heater construction
Assignee: Individual
•
Filing: 1965-12-16
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Granted: 1967-11-21
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Expires: 1985-12-16
Abstract
No abstract record available.
Inventors
- 👤 Donald E Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:47
CPC Classifications
F; F24; F24C; F24C3/00; F24C3/002; F24C3/004
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
247 words
A HEATER COMPRISING VENT TUBE MEANS COMPRISING A FIRST TUBULAR BODY HAVING AN OUTLET FOR EXHAUSTING PRODUCTS OF COMBUSTION AT ONE END AND A PASSAGEWAY CONNECTED TO AN INLET AT AN OPPOSITE END, CHAMBER TUBE MEANS COMPRISING A SECOND TUBULAR BODY CONNECTED TO SAID FIRST TUBULAR BODY AND HAVING ONE END OPENED AND CONNECTED TO SAID INLET AND HAVING AN OPPOSITE END CLOSED, AND FLAME TUBE MEANS COMPRISING A THIRD TUBULAR BODY OPEN AT BOTH ENDS AND LOCATED WITHIN AND SPACED FROM SAID SECOND TUBULAR BODY AND CONNECTED TO SAID FIRST TUBULAR BODY WITH ONE OF SAID BOTH ENDS CONNECTED TO SAID INLET AND WITH THE OTHER OF SAID BOTH ENDS SPACED FROM SAID OPPOSITE END OF SAID SECOND TUBULAR BODY, SAID ONE OF SAID BOTH ENDS BEING IN COMMUNICATION WITH THE ATMOSPHERE, MEANS FOR GENERATING BLOCKING SAID THIRD BODY FROM SAID FIRST BODY AT SAID ONE OF SAID BOTH ENDS, BURNER MEANS FOR PROVIDING A SUPPLY OF FUEL TO BE BURNED IN SAID FLAME TUBE MEANS AND HAVING AN OUTLET LOCATED WITHIN SAID FLAME TUBE MEANS AND AN AIR INLET LOCATED OUTSIDE OF SAID FLAME TUBE MEANS WHEREBY AIR FROM THE ATMOSPHERE IS DRAWN FOR COMBUSTION, AND PASSAGE MEANS DEFINING A PASSAGE FOR THE PRODUCTS OF COMBUSTION FROM SAID FLAME TUBE MEANS AND BETWEEN SAID SECOND AND THIRD TUBULAR BODIES TO SAID INLET, SAID PASSAGEWAY, AND SAID OUTLET, SAID FIRST TUBULAR BODY EXTENDING GENERALLY VERTICALLY AND WITH SAID SECOND AND THIRD TUBULAR BODIES EXTENDING GENERALLY HORIZONTALLY.
Claim 2
Dependent Claim
247 words
A HEATER COMPRISING VENT TUBE MEANS COMPRISING A FIRST TUBULAR BODY HAVING AN OUTLET FOR EXHAUSTING PRODUCTS OF COMBUSTION AT ONE END AND A PASSAGEWAY CONNECTED TO AN INLET AT AN OPPOSITE END, CHAMBER TUBE MEANS COMPRISING A SECOND TUBULAR BODY CONNECTED TO SAID FIRST TUBULAR BODY AND HAVING ONE END OPENED AND CONNECTED TO SAID INLET AND HAVING AN OPPOSITE END CLOSED, AND FLAME TUBE MEANS COMPRISING A THIRD TUBULAR BODY OPEN AT BOTH ENDS AND LOCATED WITHIN AND SPACED FROM SAID SECOND TUBULAR BODY AND CONNECTED TO SAID FIRST TUBULAR BODY WITH ONE OF SAID BOTH ENDS CONNECTED TO SAID INLET AND WITH THE OTHER OF SAID BOTH ENDS SPACED FROM SAID OPPOSITE END OF SAID SECOND TUBULAR BODY, SAID ONE OF SAID BOTH ENDS BEING IN COMMUNICATION WITH THE ATMOSPHERE, MEANS FOR GENERATING BLOCKING SAID THIRD BODY FROM SAID FIRST BODY AT SAID ONE OF SAID BOTH ENDS, BURNER MEANS FOR PROVIDING A SUPPLY OF FUEL TO BE BURNED IN SAID FLAME TUBE MEANS AND HAVING AN OUTLET LOCATED WITHIN SAID FLAME TUBE MEANS AND AN AIR INLET LOCATED OUTSIDE OF SAID FLAME TUBE MEANS WHEREBY AIR FROM THE ATMOSPHERE IS DRAWN FOR COMBUSTION, AND PASSAGE MEANS DEFINING A PASSAGE FOR THE PRODUCTS OF COMBUSTION FROM SAID FLAME TUBE MEANS AND BETWEEN SAID SECOND AND THIRD TUBULAR BODIES TO SAID INLET, SAID PASSAGEWAY, AND SAID OUTLET, SAID FIRST TUBULAR BODY EXTENDING GENERALLY VERTICALLY AND WITH SAID SECOND AND THIRD TUBULAR BODIES EXTENDING GENERALLY HORIZONTALLY.
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) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |