DOSING PENCIL Russian patent published in 2007 - IPC A45D40/02 

FIELD: substance dispensing equipment.

SUBSTANCE: dosing pencil has rod-like casing with upper discharge opening, closing cap adapted for air-tight closing of discharge opening by means of sealing cuff, and feeding piston positioned for axial displacement within casing. Feeding piston is positioned for movement only toward discharge opening and is blocked from reversal. Closing cap is made double-walled and is equipped with internal cap positioned for axial displacement relative to closing cap. Casing of dosing pencil is preferably made double-walled and equipped with outer casing adapted to be closed with closing cap and inner casing to be filled with pencil mass. Inner casing is adapted for axial displacement within outer casing. Dosing pencil of such construction allows pencil mass to be prevented from pressing-in back into casing.

EFFECT: increased efficiency by preventing pressing-in of pencil mass back into casing, and provision for closing of casing with closing cap in conjunction with pressed-out unused pencil mass.

16 cl, 19 dwg