Automatic temperature and humidity regulation – Air-relief valves – Radiator type
Patent
1988-09-09
1989-05-09
Tapolcai, William E.
Automatic temperature and humidity regulation
Air-relief valves
Radiator type
138 46, 236 93R, 236101E, F16K 7402
Patent
active
048281697
ABSTRACT:
An adjustable air valve for steam radiators, comprising a cylindrical valve body of seamless brass having a predetermined outer diameter; an upper circular disc cap closing off the top end of said valve body; a lower circular disc cap closing off the lower end of said valve body; a frusto-conical vent wall portion defining a vent orifice of fixed diameter formed integrally within said valve body proximate to said upper cap; said orifice lying in a vertical plane disposed radially inwardly of the outer cylindrical envelope of said valve body; a U-shaped bi-metallic spring cantilevered from inner portions of said valve body opposite said vent orifice; an elastomeric sealing member having a flat circular sealing surface of diameter in excess of the diameter of said vent orifice; said spring being adapted to expand and to contract in response to temperature variations to move said sealing surface selectively into and out of seal contact with said orifice; a cylindrical band having a series of apertures of graduated size; said band mounted externally of said valve housing for circular movement thereabout and in juxtaposition with the outer portion of said frusto-conical vent, whereby the effective diameter of the vent may be varied by selective juxtaposition of different sized apertures with said outer portion; and a threaded fitting disposed at the bottom of said valve body adapted to provide communication with an attachment to a steam radiator.
REFERENCES:
patent: 2509482 (1950-05-01), Crise
patent: 2576954 (1951-12-01), Lucks
patent: 2589888 (1952-03-01), Stampfl
patent: 2685891 (1954-08-01), Segelhorst et al.
patent: 2715420 (1955-08-01), Stearns
patent: 3148829 (1964-09-01), Leopardo
patent: 3260458 (1966-07-01), Klinefelter
patent: 3342411 (1967-09-01), Quist
patent: 4506991 (1985-03-01), Hudson
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