Patent ID: 6193112
Filing Date: 2001-02-27
Classification: B05B

Abstract:
A dosing pump for the delivery of liquid or creamy substances from containers comprising:a cylindrical chamber for communicating with said container and for receiving said substances therefrom;a cylindrical collar for connecting said pump to the container;a piston having an axis and being axially slidable within said cylindrical chamber, said piston having an outer wall, a hollow tubular interior chamber and longitudinal, radially opposite guides extending from said outer wall, said guides having lower ends;a supporting and guiding element located within the chamber for slidably receiving the piston therein;recovery means for recovering said piston to a rest position after delivery;the supporting and guiding element having an inner cylindrical surface, an outer cylindrical surface and radial wings reinforceably connecting said inner and outer cylindrical surfaces, and longitudinal grooves which cooperate with said guides of said piston;a striker plane extending from at least one of said grooves, along an arch of said inner cylindrical surface, for keeping said piston in the rest position by contact of the lower end of at least one of said longitudinal guides against said striker plane when the piston is rotated on its axis; a shoulder at an end of the striker plane remote from the longitudinal grooves having a length sufficient to prevent further rotation of said piston along said striker plane.