Patent ID: 7318450

Claim:
A mixing cartridge for single-lever mixing faucets, comprising: a substantially cylindrical container; a base disk, accommodated in said container proximate to one end face thereof and in which two intake ports are provided that are connectable, respectively, to a cold water feed duct and to a hot water feed duct; a mixing disk, which is superimposed on said base disk and is crossed by a mixing port, said mixing disk being movable with respect to said base disk; actuation means connected to said mixing disk and actuatable in order to vary a position of said mixing disk and of said mixing port with respect to said intake ports, so as to vary a degree of opening of said intake ports or a ratio between the opening degrees of said intake ports; and a discharge duct connected to said mixing port and exiting from said container at an end face thereof that lies opposite said end face to which said base disk is proximate; said base and mixing disks being mutually slidingly coupled with one face thereof arranged on a coupling plane that is substantially perpendicular to an axis of said container; said mixing disk being movable with respect to said base disk along a direction that is parallel to said coupling plane so as to vary the degree of opening of said intake ports and being rotatable about an axis thereof that is perpendicular to said coupling plane with respect to said base disk in order to vary the ratio between the degrees of opening of said intake ports; said actuation means comprising a lever that is pivoted to said container about a pivoting axis that is parallel to said coupling plane and is connected to said mixing disk, said lever being rotatable with respect to said container about said pivoting axis for translational motion of said mixing disk with respect to said base disk and about the axis of said container for the rotation of said mixing disk with respect to said base disk; said lever being provided so as to rotatably engage in a seat formed on a face of said mixing disk that lies opposite said base disk.