초록 ▼

A tamper resistant end closure for a container includes a base for closing an end of the container and a rotor pivotally connected to the base by a hub in the form of a hollow stem extended through a center opening in the base. An annular flange at the lower end of the stem retainably engages a lowe

A tamper resistant end closure for a container includes a base for closing an end of the container and a rotor pivotally connected to the base by a hub in the form of a hollow stem extended through a center opening in the base. An annular flange at the lower end of the stem retainably engages a lower surface of the base, and a plug is driven into and bonded within the stem, after the rotor is connected to the base, to inhibit removal of the rotor by preventing radially inward movement of the flange. The rotor and plug may initially be integral, such that an end of the plug is attached by a frangible web to the rotor, at an end of and in alignment with the passage through the stem. The frangible web is broken when the plug is driven into the stem.

대표청구항 ▼

An improved end closure having a base and a rotor pivotally connected to said base by a hub of said rotor extending through an opening in said base, said base and rotor having webs with respective dispensing apertures therein and said rotor dispensing aperture being alignable with said base dispensi

An improved end closure having a base and a rotor pivotally connected to said base by a hub of said rotor extending through an opening in said base, said base and rotor having webs with respective dispensing apertures therein and said rotor dispensing aperture being alignable with said base dispensing aperture by pivotal movement of said rotor with respect to said base about the axis of said hub, said hub extending perpendicularly from said rotor web and having an axial passage of generally uniform diameter therethrough and an annular flange therearound spaced from said rotor web, said annular flange having a diameter greater than that of said base opening and said hub, between said flange and rotor web, having a diameter less than that of said flange, said rotor being assembled on said base by pushing said hub and flange thereof through said base opening, said hub and flange collapsing radially inwardly into said hub passage as said flange is moved through said base opening and then returning radially outwardly as said flange moves out of said base opening, whereby said flange secures said rotor to said base with the two in close superposed relationship, wherein the improvement is characterized by a plug extended into and substantially completely filling said hub passage of the assembled rotor and base, without causing significant radially outward expansion of said hub and flange, to prevent radially inward collapse of the hub and flange upon any attempt to pull the rotor from the base.