Thermostatic water mixing valve

Details Thermostatic water mixing valve Thermostatic water mixing valve

2007-01-09

2010-12-14

Jules, Frantz F (Department: 3744)

Automatic temperature and humidity regulation

Mixing fluid of dissimilar temperature

C236S012110, C236S012160, C236S012190, C236S012230, C236S09300A, C137S625000, C137S625400

Reexamination Certificate

active

07850088

ABSTRACT:
The present invention is directed to a thermostatic water mixing valve having a sub-base coupled to a base, both having a hot water inlet, a cold water inlet and a mixed water outlet. A disk assembly including a lower or stationary disk and an upper or rotatable disk are positioned on the base. The lower disk also has a peripheral notch that receives an extent of an engaging member that extends from a sidewall of the base, while the upper disk has a peripheral cavity that also receives an extent of the engaging member. A cap is coupled to the upper disk, wherein the cap and the upper disk rotate as a unit with respect to the lower disk. The cap has a hot water cavity and cold water cavity positioned about a central opening. A cartridge assembly includes a collar with at least one aperture aligned with the cold water cavity of the cap and a depending skirt with at least one aperture aligned with the hot water cavity of the cap. An mixing chamber receives both hot water flowing from the hot water cavity through at least one aperture in the skirt and cold water flowing from the cold water cavity through both the aperture in the collar and at least one aperture in the slide bolt. Mixed water is discharged from the mixing chamber through the water outlets in the base and the sub-base.

REFERENCES:
patent: 5299593 (1994-04-01), Ottelli
patent: 5340018 (1994-08-01), MacDonald
patent: 6089462 (2000-07-01), Osvaldo
patent: 6517006 (2003-02-01), Knapp
patent: 2002/0059953 (2002-05-01), Tarzia
patent: 2004/0016815 (2004-01-01), Bergmann et al.

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