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US 7,597,270 B2Granted
Control assembly for thermostatic mixing
AssigneeGrohe Water Technology AG & Co. KG
InventorsChristian Frankholz, Kai Huck
Life of this patent
Estimating the term…
Abstract
A mixing valve has a valve housing, a thermostatic valve in the housing having a collar extending outward along an axis from the housing, and a stem axially shiftable in the collar. A sleeve surrounds the collar. A retaining part and interengaging screwthread formations between the part and the housing press the part against the sleeve and collar and thereby secure the collar and the sleeve on the housing against axial and angular displacement relative thereto. A handle is rotatably supported on the sleeve and threaded on the stem.
Claims13
A mixing valve comprising:
- a valve housing;
- a thermostatic element in the housing;
- a plastic casing surrounding the thermostatic element and formed with a collar extending outward along an axis from the housing;
- a threaded stem axially shiftable in the collar and bearing axially on the thermostatic element;
- a metallic sleeve surrounding and fixed to the collar;
- means including a retaining part and interengaging screwthread formations between the part and the housing for pressing the part against the sleeve and collar of the casing and thereby securing the collar and the sleeve on the housing against axial and angular displacement relative thereto;
- and
- a handle assembly rotatably supported and axially fixed on the sleeve and threaded on the stem, whereby rotation of the assembly axially shifts the stem against the thermostatic element.
5 more elements
A mixing valve comprising:
- a valve housing;
- a thermostatic element in the housing;
- a collar surrounding the element, extending outward along an axis from the housing, and formed with a plurality of angularly spaced and radially outwardly projecting tabs and at an axially inner end of the sleeve with a radially outwardly open groove;
- a stem axially shiftable in the collar and bearing axially on the thermostatic element;
- a sleeve surrounding the collar and formed with a radially inwardly projecting flange complementary to the groove and formed with a plurality of angularly spaced and inwardly open cutouts complementary to the tabs and dimensioned such that the tabs can slide axially along the cutouts;
- means including a retaining part and interengaging screwthread formations between the part and the housing for pressing the part against the sleeve and collar and thereby securing the collar and the sleeve on the housing against axial and angular displacement relative thereto;
- and
- a handle assembly rotatably supported on the sleeve and threaded on the stem;
- and
- a latch element fittable radially to the sleeve and formed with a radially inwardly open cutout complementary to the tabs, whereby when the inwardly projecting flange is in the groove, the cutouts are angularly offset from the tabs, and the part is fitted to the sleeve, the latch element locks the sleeve against angular movement on the collar.
7 more elements
Dependencies are inferred from the claim text.