Cartridge-type liquid applicator

A cartridge-type liquid applicator of comprising:

• a cylindrical applicator body having an inside surface and an opening at a rearward end of said cylindrical applicator body;
• a liquid containing cartridge-type tank accommodated within said cylindrical applicator body;
• a soaker body means, attached to said cylindrical applicator body at a forward end of said cylindrical applicator body, for applying said liquid in said cartridge-type tank;
• a cylindrical tail plug detachably fitted to said inside surface of said cylindrical applicator body at said opening at said rearward end of said cylindrical applicator body, said cylindrical tail plug comprising:
• a cylindrical body portion;
• a flange portion integrally formed in an end portion of said body portion;
• an inside through-hole having a flange side end opening and an opposite side end opening;
• a first engagement means, comprising a guide portion and any one of a protrusion and a recess portion, for snap-on engagement;
• a second engagement means formed at an area where said cylindrical applicator body contacts said cylindrical tail plug, wherein second engagement means is engagable with said first engagement means;
• slits in a periphery of said cylindrical body portion, wherein said slits are formed so as to be parallel to an axis of said cylindrical tail plug, extending from said opposite side end opening to an intermediate portion of said cylindrical body portion;
• and
• an engaging lug in said inside through-hole surface of said cylindrical tail plug;
• a knocking rod arranged within said cylindrical tail plug, wherein said knocking rod has an L-shaped groove formed at a periphery thereof, said L-shaped groove having a circumferential section and an axial section and said L-shaped groove being engagable with said engaging lug of said cylindrical tail plug for permitting a circumferential slide and an axial pressing action to lock said cylindrical tail plug and to force said liquid containing cartridge-type tank accommodated within said cylindrical applicator body forwardly through said cylindrical applicator body.