Patent ID: 8206050
Filing Date: 2012-06-26
Classification: A45D,B65D

Abstract:
1. A dispenser comprising: an elongate container including a cylindrical chamber, the cylindrical chamber having an opening at one end of the container and two guide ribs disposed at and on opposite sides of the opening; an applicator head including a dispensation aperture and being affixed to the elongate container at the opening; a threaded rod having a hollow interior, the threaded rod being axially disposed within the cylindrical chamber and affixed to the applicator head, wherein the applicator head is adapted to rotate the threaded rod relative to the elongate container, and the interior of the rod fluidically couples the cylindrical chamber to the dispensation opening; and a piston disposed within the cylindrical chamber and threadingly engaged with the threaded rod, wherein the piston includes a sealing ring positioned on an end of the piston, to circumferentially seal against an inner wall of the cylindrical chamber and a plurality of axially aligned ribs, extending beyond the outer diameter of the sealing ring, the ribs being disposed on a side of the piston and seated against the inner wall of the cylindrical chamber, with at least two of the ribs being disposed on opposite sides of the piston, and wherein rotation of the threaded rod causes translation of the piston in the axial direction.