Valve arrangement

Details Valve arrangement Valve arrangement

2005-05-31

2005-05-31

Fox, John (Department: 3753)

Fluid handling

Systems

Multi-way valve unit

C137S625420, C137S625400

Reexamination Certificate

active

06899136

ABSTRACT:
The present invention relates to a mixing valve that can be included in pulmonary respiration equipment and with which oxygen (2) and air (3) can be mixed in adapted proportions. The mixing valve (1) comprises a valve housing (40) that has an internal cavity (46), which forms two mutually opposing valve seats (10d,20d). The cavity (46) encloses an element (30) on which two valve bodies (10c, 20c) are formed. The cavity wall and the element have respective screw threads (46c′ and30c′) which enable two valve means (10, 20) to be actuated so as to open one of said valve means and close the other to passage of media therethrough. The mixing valve is of simple construction and precise in operation and can be constructed with small outer dimensions.

REFERENCES:
patent: 1490884 (1924-04-01), Spreen
patent: 2046474 (1936-07-01), Maggenti
patent: 3194264 (1965-07-01), Greco
patent: 3424260 (1969-01-01), Stone et al.
patent: 3487435 (1969-12-01), Sheardown
patent: 3739799 (1973-06-01), Bickford et al.
patent: 4250920 (1981-02-01), Traylor
patent: 4711270 (1987-12-01), Fornasari
patent: RE33246 (1990-07-01), Barree
patent: 5067521 (1991-11-01), Jenks et al.

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