US3349754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchange device
Assignee: Bock Corp
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Filing: 1966-06-29
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Granted: 1967-10-31
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Expires: 1986-06-29
Abstract
No abstract record available.
Inventors
- 👤 John C Bock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:52
CPC Classifications
F; F24; F24H; F24H1/00; F24H1/18; F24H1/20; F24H1/205; F24H1/206
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
171 words
A HEAT EXCHANGE DEVICE COMPRISING: (A) A TANK, (B) A HEAT CONDUCTIVE TUBULAR FLUE MOUNTED IN SAID TANK AND HAVING A CLOSED INNER END DISPOSED WITHIN SAID TANK AND AN EXHAUST END, (C) A PLURALITY OF BAFFLES SECURED IN HEAT CONDUCTIVE CONTACT TO THE INNER SURFACE OF SAID TUBULAR FLUE AND PROJECTING INWARDLY TO DEFINE A CENTRAL COLUMN IN SAID TUBULAR FLUE, (D) AN ELONGATED CORE DISPOSED WITHIN SAID CENTRAL COLUMN, (E) A BURNER FIRING INTO SAID FLUE, (F) SAID BAFFLES BEING DISPOSED IN SAID FLUE IN A SPIRAL PATTERN TO DEFINE A FLUID FLOW PATH THROUGH SAID FLUE BETWEEN THE INNER SURFACE OF SAID FLUE AND SAID CORE, (G) SAID BAFFLES BEING TILTED AT AN ANGLE IN A DIRECTION COUNTER TO THE DIRECTION OF THEIR SPIRAL PATTERN TO GUIDE SAID COMBUSTION GASES THROUGH SAID FLUE IN A SPIRAL PATH COUNTER TO THE DIRECTION OF THE SPIRAL PATTERN OF SAID BAFFLES, AND (H) AN EXHAUST OUTLET AT THE EXHAUST END OF SAID FLUE FOR DISCHARGING THE COMBUSTION GASES FROM SAID FLUE.
Claim 2
Dependent Claim
171 words
A HEAT EXCHANGE DEVICE COMPRISING: (A) A TANK, (B) A HEAT CONDUCTIVE TUBULAR FLUE MOUNTED IN SAID TANK AND HAVING A CLOSED INNER END DISPOSED WITHIN SAID TANK AND AN EXHAUST END, (C) A PLURALITY OF BAFFLES SECURED IN HEAT CONDUCTIVE CONTACT TO THE INNER SURFACE OF SAID TUBULAR FLUE AND PROJECTING INWARDLY TO DEFINE A CENTRAL COLUMN IN SAID TUBULAR FLUE, (D) AN ELONGATED CORE DISPOSED WITHIN SAID CENTRAL COLUMN, (E) A BURNER FIRING INTO SAID FLUE, (F) SAID BAFFLES BEING DISPOSED IN SAID FLUE IN A SPIRAL PATTERN TO DEFINE A FLUID FLOW PATH THROUGH SAID FLUE BETWEEN THE INNER SURFACE OF SAID FLUE AND SAID CORE, (G) SAID BAFFLES BEING TILTED AT AN ANGLE IN A DIRECTION COUNTER TO THE DIRECTION OF THEIR SPIRAL PATTERN TO GUIDE SAID COMBUSTION GASES THROUGH SAID FLUE IN A SPIRAL PATH COUNTER TO THE DIRECTION OF THE SPIRAL PATTERN OF SAID BAFFLES, AND (H) AN EXHAUST OUTLET AT THE EXHAUST END OF SAID FLUE FOR DISCHARGING THE COMBUSTION GASES FROM SAID FLUE.
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) | 1970-10-30 | 1971-05-01 | 1971-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-30 | 1975-05-01 | 1975-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-30 | 1979-05-01 | 1979-10-31 | $7700.00 | Window Closed / Lapsed |