Patent ID: 6035866
Filing Date: 2000-03-14
Classification: A45D

Abstract:
In a pomade stick applicator of the type having a substantially right cylindrical tubular shell having open proximal and distal ends and an inner and an outer surface, a substantially right cylindrical cam having open proximal and distal ends coaxially and fixedly housed within said shell and thereby forming a shell-cam assembly having a common longitudinal axis, said cam having an outer surface adjacent the inner surface of said shell and an inner surface defining a helical cam groove, an inner body coaxially housed within said cam having a proximal end extending beyond the open proximal end of said shell, said inner body defining a longitudinal groove substantially parallel to the common longitudinal axis of said shell-cam assembly, said inner body being rotatable relative to said cam about said longitudinal axis, and an elevator carrier cup for said pomade stick housed and longitudinally movable within said inner body, said elevator carrier cup having a lug extending through said longitudinal groove and into said cam groove whereby said elevator carrier cup is caused to advance from the proximal to the distal end of the shell along said common longitudinal axis upon relative rotation between said inner body and said cam to extend said pomade stick from the open distal end of the shell, and upon relative counter-rotation between said inner body and said cam to retract the pomade stick within the shell, the improvement comprising a two-part base-cap container including:a right cylindrical base having a closed proximal end, embracing the proximal end of the rotatable inner body in torque-transmitting relationship to produce said relative rotation, with rib-and-groove means encircling the proximal end of the inner body inside said base with a snap fit sealingly anchoring the base on the inner body,and a right cylindrical cap having a closed distal end, sized for substantial telescoping engagement with the distal end of the cylindrical shell, and incorporating first resilient sealing means providing resiliently deformable interfering engagement with said inner body and substantially airtight sealing contact between said shell-cam assembly and said two-part base-cap container when said pomade stick is retracted within said shell,and further including additional resilient sealing means incorporating:a resilient deformable proximal rim formed on the proximal end of said cam and extending beyond the proximal end of said shell into overlapping engagement with the proximal end of said inner body,a resilient deformable shoulder formed on the inner body and protruding interferingly into deformed contact with said cam rim during said overlapping engagement,and bevelled ramp means operatively positioned between said cam rim and said inner body shoulder,whereby longitudinal force applied by a user urging said cam rim and the said inner body shoulder into progressively greater overlapping engagement produces progressively greater deformation of both cam rim and shoulder as overlapping engagement increases long said ramp means.