Patent ID: 7017543

Claim:
Intake manifold or distributor for an air feed circuit for an internal-combustion engine comprising: an intake or plenum chamber of elongated shape, having at one longitudinal end an intake aperture, and at least two pipes laterally connected to said chamber, said pipes extending at least partially around said intake chamber from inlet apertures opening therein and having a curved structure over at least a portion of the pipe length, the manifold formed from a first part and a second monolithic part, the monolithic first part forming a first longitudinal portion of a casing solely defining the intake chamber, an intermediate portion of a side portion of the wall of each of the pipes, and an end conduit segment of each of said pipes ending with an outlet aperture, and the second monolithic part forming a second complementary longitudinal portion of the casing solely defining the intake chamber, an end conduit segment of each of said pipes ending with and forming the inlet aperture of each of the pipes, opening into the intake chamber, and a complementary intermediate portion of a side portion of the wall of each of the pipes; wherein the first part and the second part are produced by injection molding of a thermoplastic material, wherein the parts are joined to one another in a region of peripheral joint zones located on a joining surface crossing said manifold.