Fluid product reservoir

A fluid product reservoir comprising:

• a closed container having an open neck portion with interior walls defining an open throat;
• an interior, outwardly facing ledge integral with said interior walls of said throat;
• a plug located in said throat having an outer wall closely conforming to the interior walls of said neck portion to close the throat;
• said plug having a peripheral inwardly facing ledge in mating contact with the outwardly facing ledge in said throat;
• means sealably joining the ledge of said plug to the ledge of said throat;
• the end of said neck having a plurality of tabs extending radially inward over the outward end of said plug to hold said plug in place;
• said plug having a central opening;
• an elastically penetrable insert sealably located in said central opening of the plug.

A fluid product reservoir comprising:

• a closed container having an open neck portion with interior walls defining an open throat;
• in interior, outwardly facing ledge integral with said interior walls of said throat;
• a plug located in said throat having side walls closely conforming to the interior walls of said neck portion to close the throat;
• said plug having a peripheral, inwardly facing ledge in mating contact with the outwardly facing ledge in said throat;
• means sealingly joining the ledge of said plug to the ledge of said throat;
• said plug having an end wall extending diametrically between the inner surface of said side walls;
• said end wall having a central opening;
• an elastically penetrable insert sealingly located in said central opening having a base located on the interior side of said end wall, a neck extending through said central opening, and a head on the opposite side of said end wall.

A fluid product reservoir comprising:

• a closed container having an open neck portion with interior walls defining an open throat;
• an interior, outwardly facing ledge integral with said interior walls of said throat;
• a plug located in said throat having side walls closely conforming to the interior walls of said neck portion to close the throat;
• said plug having a peripheral, inwardly facing ledge in mating contact with the outwardly facing ledge in said throat;
• means sealably joining the ledge of said plug to the ledge of said throat;
• the outer end of the side walls of said plug being recessed relative to the outer end of the neck;
• discrete portions of the end of said neck being turned over the outer end of the side walls of said plug to form a plurality of tabs extending radially inward over the outward end of said plug to hold said plug in place.

A plug for closure of a thermoplastic container of the type having a cylindrical open neck with an outwardly facing annular ledge in the neck, said plug including:

• an annular side wall having a contour to closely conform to the interior walls of the neck of said type of container;
• an end wall extending diametrically between the interior surfaces of said side wall;
• means on said end wall permitting fluid communication with the interior of said chamber;
• one edge of said side wall adapted for sealing engagement with the annular ledge in the neck of said type of container;
• said one edge being a pointed, annular edge comprising an energy director adapted to be ultrasonically welded to the annular ledge in the neck of said type of container.

A plug for closure of a thermoplastic container having a cylindrical open neck with an outwardly facing ledge in the neck, said plug including:

• an annular side wall having a contour to closely conform to the interior walls of the neck of the container;
• one edge of said side wall adapted to sealingly contact the ledge in the neck of the container;
• an end wall extending diametrically between the interior surfaces of the side wall;
• said end wall having a central opening;
• an annular sleeve surrounding said central opening on said end wall on the side of the end toward the edge of the side wall adapted to contact the ledge in the neck of the container;
• an elastically penetrable insert sealingly located in said central opening;
• said insert having a base located in said annular sleeve, a neck extending through said central opening, and a head located on the opposite side of said end wall.