Patent ID: 8453942

Claim:
A thermostatic single-unit mixer, comprising: a mixer casing of tubular overall shape, a thermostatic cartridge, which constitutes a preassembled assembly attached inside the mixer casing and which comprises a hollow shell made of plastic, accommodating thermostatic means for regulating the temperature of a fluid leaving the cartridge and being obtained by mixing a cold incoming fluid with a hot incoming fluid, and attachment means for attaching the shell to the mixer casing, wherein the attachment mean comprise, firstly, a screw provided with a threaded shank and with a widened end head, and, secondly, a rigid component which is interposed between the mixer casing and the shell such that this rigid component can move along an axis of movement transverse to the longitudinal axis of the mixer casing, this rigid component being kinematically linked to the shell both in the direction of the axis of the mixer casing and in terms of rotation about this axis, and which is equipped with a tapping which is centered on the axis of movement, which opens onto one face of the rigid component, which faces toward the mixer casing, and which is able to engage by screw fastening with the threaded shank in order to move the rigid component until a bearing surface of this face is pressed firmly against the interior face of the mixer casing when the screw is introduced, from outside the mixer casing, through a transverse through-hole of the mixer casing, this through-hole being smaller than the head of the screw.