Device for increasing the uniformity of the air-fuel mixture in internal combustion engines

Claim 1

In a device for internal combustion engines for increasing the uniformity of the air-fuel mixture, comprising a frusto-conical element formed by a perforated lateral wall having a collar at its major opening, the collar being adapted to fit between the carburetor flange and the manifold flange of an internal combustion engine whereas the apex of the truncated cone extends into the manifold inlet of said engine; the improvement comprising a single additional internal component in the form of a plate shaped and curved to form a spiral so as to produce turbulence and send the mixture against the walls of the truncated cone, the spiral being disposed within the truncated cone and end portions of the spiral being secured to the truncated cone and the mid-portion of the spiral between said end portions extending into the truncated cone more closely adjacent said apex and said end portions being disposed more closely adjacent said major opening of said truncated cone.