Patent US3601097A successfully refreshed from Google Patents.
US3601097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boiler
Assignee: Individual
•
Filing: 1969-10-21
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Granted: 1971-08-24
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Expires: 1989-10-21
Abstract
Abstract A boiler comprising a housing adapted to contain water. A combustion chamber located in the upper portion of the housing and a heat exchanger located in the lower portion of the housing. The heat exchanger holds a quantity of water for consumption. A duct is located within the housing connecting the space above the combustion chamber and the space below the heat exchanger. A pump is provided to circulate the water in the housing through the duct.
Inventors
- 👤 Hans Viessmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:26
CPC Classifications
F; F24; F24H; F24H1/00; F24H1/48; F24H1/50
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
101 words
A boiler comprising a housing adapted to contain water and having forward and return flow connections, a combustion chamber spatially located in the upper portion of said housing, a heat exchanger spatially located in the lower portion of said housing, said heat exchanger adapted to contain a quantity of water for consumption, a duct connecting the space above the combustion chamber with the space below the heat exchanger, and a pump connected to said duct for circulating the water within said housing whereby hot water from the upper portion is moved into contact with the heat exchanger in the lower portion.
Claim 2
Dependent Claim
101 words
A boiler comprising a housing adapted to contain water and having forward and return flow connections, a combustion chamber spatially located in the upper portion of said housing, a heat exchanger spatially located in the lower portion of said housing, said heat exchanger adapted to contain a quantity of water for consumption, a duct connecting the space above the combustion chamber with the space below the heat exchanger, and a pump connected to said duct for circulating the water within said housing whereby hot water from the upper portion is moved into contact with the heat exchanger in the lower portion.
Claim 3
Dependent Claim
63 words
A boiler according to claim 1 wherein the circulating duct is in the form of a pipe in the interior of the housing the upper opening of the pipe being above the combustion chamber and the lower opening being below the heat exchanger, the circulating pipe passing through the pump which has its suction side connected to the upper part of the pipe.
Claim 4
Dependent Claim
17 words
A boiler according to claim 2 wherein the pump is arranged outside the interior of the housing.
Claim 5
Dependent Claim
23 words
A boiler according to claim 2 wherein the pump is arranged approximately in the region between the combustion chamber and the heat exchanger.
Claim 6
Dependent Claim
21 words
A boiler according to claim 4, wherein the pump is thermostatically controlled, the control thermostat being connected to the heat exchanger.
Claim 7
Dependent Claim
20 words
A boiler according to claim 2, wherein the circulating pipe serves as a pump housing over a clearly defined area.
Claim 8
Dependent Claim
29 words
A boiler according to claim 1 wherein a continuous flow heater is provided and having a mixing regulator between the pump and the suction aperture of the circulating pipe.
Claim 9
Dependent Claim
21 words
The boiler according to claim 1, including a plurality of heat exchangers located within said housing, all below said combustion chamber.
References Cited (Backward Citations)
US3007457A
Cited
US3366094A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-23 | 1975-02-22 | 1975-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-23 | 1979-02-22 | 1979-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-23 | 1983-02-22 | 1983-08-24 | $7700.00 | Window Closed / Lapsed |