Pilferproof closure

A closure for a container having a wall member with an aperture, said closure comprising a tubular sleeve portion having means for forming a seal-tight fit within a container aperture and providing a pour opening, a resilient plug having in a closed position of said plug a seal-tight fit within said opening, a lift lever, means tethering said lift lever to said plug, said lift lever having a fulcrum end and a lift end, and combination fulcrum and lip guide means on said sleeve portion extending axially thereof, said lift lever being swingable over said combination means for prying said plug out of said opening, and frangible tamper-indicating means on said lift lever connected to said plug and being separable attendant to lifting of said lift lever.

In combination with a container having an aperture and a closure, said closure comprising a sleeve fitted into said aperture, means providing a seal between said sleeve and said container, said sleeve having a bore defining a pour opening, a plug having a seal fit with said sleeve in closed position of said plug within said opening, a lever overlying said plug in the closed position of said plug, a tether connecting one end of said lever to said plug, and a fulcrum on said sleeve having an upper end positioned for engagement by said lever attendant to said lever being swung beyond a predetermined angle whereupon said lever is caused to pivot on said fulcrum and pull on said tether and thus lift said plug out of said opening, and separable pilfer-indicating means connected between said lever and said plug.

A closure for a container having an aperture, said closure being means for closing a container aperture and comprising a sleeve insertable into an aperture in a container and having a pouring bore, a plug insertable into said pouring bore for closing said pouring bore, lifting means operably associated with said plug for displacing said plug from said pouring bore, and frangible pilfer-indicating means between said plug and said lifting means, said pilfer-indicating means being of the type adapted to break apart attendant to lifting of said lifting means, said lifting means comprising a tab overlying said plug in the closed position of said plug.

A closure for a container neck having a pour opening, said closure comprising closure means for closing said pour opening, lift means for displacing said closure means from a closed to an open position with respect to said pour opening, and pilfer-indicating means having a frangible connection between said lift means and said closure means and adapted to be fractured attendant to lifting of said lift means and thereby providing indicia of pilfering, said lift means being disposed in overlapped position to said closure means in the closed position of said closure, and said pilfer-indicating means comprising a breakaway portion of said lift means breakable away therefrom upon lifting of said lift means, and lift-force transmitting means tethering said lift means to said closure means, and said breakaway portion of said lift means being spaced from said tethering means and upon being broken away forming a visually apparent hole through said lift means.