Patent ID: 7222592

Claim:
Water outlet box, in particular for the cylinder head of an internal combustion engine, comprising a regulating thermostat substantially including a valve to block an opening of a passage emerging in said box, said valve being carried and centered by a portion of frontal spindle engaged in a bearing, which is integral with the box, stressed against its seat, formed by the peripheral edge of the opening, by an elastic loading means and moved away from said seat by a pressure means which reacts to heat, said means with opposed actions resting, directly or indirectly, on a stress-absorbing clamp which also ensures that said thermostat is mounted and positioned in cooperation with said bearing, wherein said box ( 1 ) is produced in a thermoplastic material and comprises, on the internal face of its constitutive wall ( 1 ′), at least two internal protrusions ( 10 , 10 ′) providing permanent support surfaces ( 10 ″) for the clamp ( 9 ) of said thermostat ( 2 ), before and after installation of said box ( 1 ), and wherein the clamp ( 9 ) has a structure in the form of a small plate and comprises two opposed lateral legs ( 9 ′) and that the protrusions ( 10 and 10 ′) consist of two opposed internal radial projections of the wall ( 1 ′) of the water box ( 1 ) formed in one piece with the wall.