Patent ID: 7993281
Filing Date: 2011-08-09
Classification: A61B,G01N

Abstract:
1. A breath alcohol measuring device, comprising: a holder defining a groove with flat receiving surfaces on opposite longitudinal sides of said groove, said flat receiving surfaces tapering inwardly in a straight line toward a base of said groove; an alcohol sensor connected to said holder; a mouthpiece designed as a pressure tube with a hole for sampling breathing gas for said alcohol sensor, the mouthpiece having an attachment cross section defining flat outer surfaces that are complementary to a corresponding negative shape of said flat receiving surfaces in said holder, said outer surfaces and said receiving surfaces defining operative fixing means for a flush mounting of said mouthpiece to said holder and for holding said mouthpiece to said holder, said mouthpiece having a stop extending outside said holder when said attachment section is in said holder, said stop extending in a circumferential direction of the attachment cross section over at least some sections of said attachment cross section, said stop setting a position of said mouthpiece in the longitudinal direction in relation to said holder for alignment of an extending suction channel for sampling breathing gas to said hole.