US4192259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steel heating boiler for liquid or gaseous fuels
Assignee: Individual
•
Filing: 1978-05-12
•
Granted: 1980-03-11
•
Expires: 1998-05-12
Abstract
Abstract A steel heating boiler for liquid or gaseous fuels, with a water-bearing housing, between the front and rear walls of which is arranged in a liquid-tight manner a cylindrical installation unit consisting of combustion chamber and fuel-gas flues. The steel heating boiler which is intended for the operation of hot-water heating systems is distinguished by the fact that the installation unit, whose combustion chamber and fuel-gas flues are provided with a corrosion-resistant lining known per se, has on the inside end closure members included in the lining, whose outside diameter is larger than the outside diameter of the installation unit, the outer peripheral edges of the end closure members being connected to the opening edges of the front and rear walls in a liquid-tight way and at least the inside diameter of the burner-side end closure member being made smaller than the inside diameter of the installation unit.
Inventors
- 👤 Hans Viessmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:22
CPC Classifications
F; F24; F24H; F24H1/00; F24H1/22; F24H1/24; F24H1/26; F24H1/263
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
133 words
A steel heating boiler for liquid or gaseous fuels, said boiler comprising a water-bearing housing including front and rear walls having openings surrounded by opening edges, a cylindrical installation unit including combustion chamber and fuel-gas flues being arranged in a liquid-tight way between said front and rear walls, the installation unit including a corrosion-resistant lining for said combustion chamber and fuel-gas flues, said unit further including end closure members covered at least in part by the lining, the end closure members having an outside diameter larger than the outside diameter of the installation unit and having outer peripheral edges connected in liquid-tight relation to the opening edges of the front and rear walls, the inside diameter of at least one said closure member being smaller than the inside diameter of the installation unit.
Claim 2
Dependent Claim
133 words
A steel heating boiler for liquid or gaseous fuels, said boiler comprising a water-bearing housing including front and rear walls having openings surrounded by opening edges, a cylindrical installation unit including combustion chamber and fuel-gas flues being arranged in a liquid-tight way between said front and rear walls, the installation unit including a corrosion-resistant lining for said combustion chamber and fuel-gas flues, said unit further including end closure members covered at least in part by the lining, the end closure members having an outside diameter larger than the outside diameter of the installation unit and having outer peripheral edges connected in liquid-tight relation to the opening edges of the front and rear walls, the inside diameter of at least one said closure member being smaller than the inside diameter of the installation unit.
Claim 3
Dependent Claim
30 words
A steel heating boiler according to claim 1, comprising covers and wherein the end closure members include outwardly directed, annular rims as mounting flanges on which the covers are mounted.
Claim 4
Dependent Claim
32 words
A steel heating boiler according to claim 1, wherein the cylindrical installation unit is arranged inside the housing with said unit having an axis which is inclined between the end closure members.
Claim 5
Dependent Claim
20 words
A steel heating boiler according to claim 1 wherein the installation unit is in the form of a truncated cone.
Claim 6
Dependent Claim
20 words
A steel heating boiler according to claim 1 wherein the installation unit includes a bottom region free of fuel-gas flues.
Claim 7
Dependent Claim
35 words
A steel heating boiler according to claim 1 wherein continuous corrugations enlarging the size of the openings in the front and rear walls are embossed into the front and rear walls concentrically to the openings.
Claim 8
Dependent Claim
30 words
A steel heating boiler according to claim 1 wherein the unit includes a peripheral shell and the end closure members are connected to the peripheral shell by inner weld joints.
References Cited (Backward Citations)
US3734066A
Cited
US4109614A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-03-11 | 1983-09-10 | 1984-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-03-11 | 1987-09-10 | 1988-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-03-11 | 1991-09-10 | 1992-03-11 | $7700.00 | Window Closed / Lapsed |