Patent US3735807A successfully refreshed from Google Patents.
US3735807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heater for fluid contained in a vessel
Assignee: Individual
•
Filing: 1971-06-18
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Granted: 1973-05-29
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Expires: 1991-06-18
Abstract
Abstract For heating fluid in a vessel, a conductive heat exchange structure is provided with one side engaging fluid in the vessel, and a passage is provided on the other side of the heat exchange structure for passing a heating fluid to transmit heat to the fluid to be heated.
Inventors
- 👤 B E Hunt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:19
CPC Classifications
E; E04; E04H; E04H4/00; E04H4/12; E04H4/129; F; F24; F24H; F24H1/00; F24H1/18; F24H1/186
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
121 words
A heater for fluid contained in a vessel, said heater comprising a heat conductive exchange structure having one side in facing engagement with fluid to be heated, a generally vertical passage for a heating fluid on the other side of and in fluid communication with said exchange structure and having a lower inlet and an upper outlet, generally vertically extending ribs on said exchange structure generally coextensive with and projecting into said passage, said ribs combining with said passage to define a plurality of flues, and a combustion heating chamber communicating with a lower region of said passage for heating the heating fluid, for transfer by a heating fluid of heat through said exchange structure to the fluid to be heated.
Claim 2
Dependent Claim
121 words
A heater for fluid contained in a vessel, said heater comprising a heat conductive exchange structure having one side in facing engagement with fluid to be heated, a generally vertical passage for a heating fluid on the other side of and in fluid communication with said exchange structure and having a lower inlet and an upper outlet, generally vertically extending ribs on said exchange structure generally coextensive with and projecting into said passage, said ribs combining with said passage to define a plurality of flues, and a combustion heating chamber communicating with a lower region of said passage for heating the heating fluid, for transfer by a heating fluid of heat through said exchange structure to the fluid to be heated.
Claim 3
Dependent Claim
45 words
A heater according to claim 1, said exchange structure comprising a plate-like construction for securement to a side wall of the vessel, said plate-like construction being configured for location in closing relation with a relatively large vessel wall opening to transmit heat through the opening.
Claim 4
Dependent Claim
73 words
A heater according to claim 1, said exchange structure comprising a plate-like construction for securement to a side wall of the vessel, said plate-like construction including a peripheral margin located in a plane offset from the plane of the central remainder of said construction, for securement of the margin in sealing relation with a vessel wall to define between the latter and said construction remainder a space for passing fluid to be heated.
Claim 5
Dependent Claim
20 words
A heater according to claim 1, in combination with insulation insulating said chamber and passage remote from said exchange structure.
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) | 1976-05-28 | 1976-11-27 | 1977-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-28 | 1980-11-27 | 1981-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-28 | 1984-11-27 | 1985-05-29 | $7700.00 | Window Closed / Lapsed |