Patent ID: 6935568

Claim:
A single-lever thermostatic cartridge comprising a body in which there is formed a mixed fluid chamber; a disk fixed relative to said body and provided with an inlet passage and a return passage at least for cold fluid and an inlet passage and a return passage at least for hot fluid; a disk movable relative to the fixed disk and provided with a cold fluid passage adapted to establish communication between the cold fluid inlet passage and the cold fluid return passage in the fixed disk and a hot fluid passage adapted to establish communication between the hot fluid inlet passage and the hot fluid return passage in the fixed disk; thermostatic regulation means including a regulation slide-valve in the mixed fluid chamber downstream of the cold and hot fluid return passages, and a thermostatic element at least partly inside the mixed fluid chamber and to which the regulation slide valve is mechanically connected; and a single control lever for controlling the flowrate and the temperature of the mixed fluid and adapted to drive the movable disk relative to the fixed disk in rotation and in translation and to move the thermostatic element inside the mixed fluid chamber, wherein the cold fluid inlet passage and the cold fluid return passage in the fixed disk extend approximately end-to-end in circumferential arcs with substantially equal radii, and in that the hot fluid inlet passage and the hot fluid return passage in the fixed disk extend approximately end-to-end in circumferential arcs with substantially equal radii.