Pipe joints or couplings – With casing – lining or protector – Insulated
Patent
1990-01-25
1991-02-26
Joyce, Harold
Pipe joints or couplings
With casing, lining or protector
Insulated
98 4202, 285 64, F24F 7013
Patent
active
049953095
ABSTRACT:
An exhaust system for removing radon gas from a building. An electrical fan is mounted exteriorly of the building and is connected to and between a pair of conduits, one of which extends into the building for collection of radon gas, whereas the second tube extends outwardly to allow gas to be exhausted by the fan. A transition box located between the fan and conduit allows for the positioning of the fan apart from the building, whereas the connected conduit is positioned adjacent to blend with the building contour. A housing encloses the fan and conduits.
REFERENCES:
patent: 1581571 (1926-04-01), Frederickson
patent: 3799703 (1974-03-01), Paine et al.
patent: 4885984 (1989-12-01), Frahlevs
Joyce Harold
Radon Control, Inc.
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