Patent US4046320A successfully refreshed from Google Patents.
US4046320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fireplace boiler heating system for hot water type furnaces
Assignee: Individual
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Filing: 1976-05-21
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Granted: 1977-09-06
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Expires: 1996-05-21
Abstract
Abstract A water boiler adapted for use in a fireplace is disclosed having an inlet header pipe, an outlet header pipe, and a series of pipes disposed parallel to one another and connected between the inlet and the outlet header pipes. The series of pipes is fashioned so as to form a grate suitable for supporting a log fire, including a horizontal portion upon which the logs may be supported and a remaining portion which extends upward along the rear wall of the fireplace through an arc back toward the top front of the fireplace, whereby heat rising from the fire passes between the series of pipes for added boiler efficiency. A heating system using the fireplace boiler and operating in conjunction with a conventional residential heating system is also disclosed. The fireplace boiler contributes heat a conventional furnace to reduce the amount of energy consumed by the latter.
Inventors
- 👤 William A. Johnson
- 👤 Roy O. Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:28
CPC Classifications
F; F24; F24B; F24B1/00; F24B1/18; F24B1/183; F24B1/185; F24B1/187; F24B1/1875; F24D; F24D3/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
137 words
A system for heating homes and other buildings comprising a fireplace water boiler, a furnace having a water boiler, means for conveying relatively hot water from said fireplace boiler to said furnace boiler, radiating means for dissipated heat from water introduced therein, valve means for diverting said relatively hot water from said furnace boiler to said radiating means when the temperature of the water in said furnace boiler is at least equal to a first preselected value, cold water return means for conveying relatively cold water from said radiating means to said fireplace boiler, and a water pump connected between said cold water return means and said fireplace water boiler adapted to forceably circulate water through said system when the temperature of the water in said fireplace boiler is at least equal to a second preselected value.
Claim 2
Independent Claim
137 words
A system for heating homes and other buildings comprising a fireplace water boiler, a furnace having a water boiler, means for conveying relatively hot water from said fireplace boiler to said furnace boiler, radiating means for dissipated heat from water introduced therein, valve means for diverting said relatively hot water from said furnace boiler to said radiating means when the temperature of the water in said furnace boiler is at least equal to a first preselected value, cold water return means for conveying relatively cold water from said radiating means to said fireplace boiler, and a water pump connected between said cold water return means and said fireplace water boiler adapted to forceably circulate water through said system when the temperature of the water in said fireplace boiler is at least equal to a second preselected value.
Claim 3
Dependent Claim
158 words
The system of claim 1 further comprising a hot water heater, a water preheater defining a chamber adapted to hold water, a coiled pipe disposed in said chamber and having an input end connected between said valve means and said radiating means for introducing relatively hot water from said fireplace water boiler into said coiled pipe, and an output end connected between said radiating means and said pump for conveying relatively cold water into said cold water return means, means for introducing water into said chamber from a source external to said system to absorb heat from said coiled pipe, means for transmitting water from said chamber into said hot water heater, and second valve means connected between said first valve means and said radiating means for diverting said relatively hot water from said coiled pipe to said radiating means when the temperature of the water in said chamber is at least equal to a second preselected value.
Claim 4
Dependent Claim
35 words
The system of claim 1 further comprising hot water circulating means attached to said furnace for heating said home and other buildings, and means connecting said circulating means between said radiating means and said pump.
Claim 5
Dependent Claim
54 words
The system of claim 3 further comprising a water turn-off valve attached to said connecting means for passing water between said circulating means and said pump when said fireplace water boiler is operative and for prohibiting the flow of water from said circulating means to said pump when said fireplace water boiler is inoperative.
Claim 6
Dependent Claim
21 words
The system of claim 3 further comprising an air bleeder valve connected to said circulating means for removing air accumulated therein.
Claim 7
Dependent Claim
87 words
The system of claim 1 further comprising switching means for turning said pump on and off, and a thermocouple attached to said fireplace boiler responsive to the temperature of the hottest water therein and operatively associated with said switching means for energizing said pump to an operative condition when the temperature of said hottest water is at least equal to a third preselected value, and for deenergizing said pump, to an inoperative condition when the temperature of said hottest water is less than said third preselected value.
Claim 8
Dependent Claim
24 words
The system of claim 1 wherein said radiating means comprises a water pipe, and a plurality of heat radiating fins attached to said pipe.
Claim 9
Dependent Claim
26 words
The system of claim 1 wherein said radiating means is disposed under a ground floor of said house or other buildings for radiating heat upward therethrough.
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) | 1980-09-05 | 1981-03-07 | 1981-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-05 | 1985-03-07 | 1985-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-05 | 1989-03-07 | 1989-09-06 | $7700.00 | Window Closed / Lapsed |