Plastic closure with mechanical pilfer band

A closure for a container having a threaded neck to which said closure is adapted to be rotatably applied, comprising:

• p1 a closure cap having a top wall portion and a threaded skirt portion integrally depending from said top wall portion,
• pilfer band means integral with said skirt portion and depending therefrom, and
• fracturable means distinguishing said pilfer band means from said skirt portion,
• said pilfer band means comprising a band portion and a plurality of circumferentially spaced wing means integral with said band portion and extending generally inwardly thereof, said wing means being adapted to move outwardly of said container toward said band portion during application of said closure to said container by rotating said closure in one direction, and said plurality of wing means having first edge portions integral with said band portion and second edge portions adapted to engage a non-vertical portion of said threaded neck during rotation of said closure in the other direction for removal whereby said pilfer band means resist said rotation for removal and said fracturable means fracture, said plurality of wing means being outwardly movable generally about respective axes which are non-perpendicular to the rotational axis of said closure.

A closure for a container having a threaded neck to which said closure is adapted to be rotatably applied, comprising:

• a closure cap having a top wall portion and a threaded skirt portion integrally depending from said top wall portion,
• pilfer band means integral with said skirt portion and depending therefrom, and
• fracturable means distinguishing said pilfer band means from said skirt portion,
• said pilfer band means comprising an annular band portion and a plurality of wing means integral with said annular band portion and extending generally inwardly thereof, said wing means each being adapted to move outwardly of said container toward said band portion during application of said closure to said container by rotating said closure in one direction, and said wing means being adapted to engage a portion of said threaded neck during rotation of said closure in the other direction for removal whereby said pilfer band means resists said rotation for removal and said fracturable means fracture, each said wing means being outwardly movable generally about an axis which is non-perpendicular to the rotational axis of said closure,
• said plurality of wing means comprising a plurality of peripherally spaced relatively flexible wings, each of said wings being adapted to cam against and mechanically interengage and interfere with said container neck for resisting said rotation for removal,
• said closure being adapted for application to a container having an annular locking ring integral with the container neck,
• each of said wings including a camming edge portion adapted to cam against said locking ring and a free end portion adapted to mechanically interengage and interfere with a portion of said neck adjacent said locking ring.

A closure for a container having a neck including a locking ring portion, comprising:

• a cap having a top wall portion and a skirt portion depending integrally therefrom, and
• pilfer band means joined to said skirt portion,
• said pilfer band means including a plurality of inwardly extending wing means, said wing means being adapted to move past said locking ring portion during application of said closure to said container, and to engage said locking ring portion during removal of said closure from said container whereby said pilfer band means resists removal of said closure from said container, each said wing means being movable generally about an axis which is non-perpendicular to the axis of said closure,
• each of said wing means including a camming edge portion adapted to engage said locking ring portion during relative axial displacement of said closure relative to said container whereby said wing means are urged outwardly of said container and said pilfer band means fracture,
• each of said wing means being disposed at an acute angle relative to the axis of said closure whereby said wing means are adapted to flex outwardly of said container during application of said closure to said container, said wing means generally resuming their configuration prior to application after said wing means are moved past said locking ring portion during application.

A closure for a container having a neck including a locking ring portion, comprising:

• a cap having a top wall portion and a skirt portion depending integrally therefrom, and
• pilfer band means joined to said skirt portion,
• said pilfer band means including a plurality of inwardly extending wing means, said wing means being adapted to move past said locking ring portion during application of said closure to said container, and to engage said locking ring portion during removal of said closure from said container whereby said pilfer band means resists removal of said closure from said container, each said wing means being movable generally about an axis which is non-perpendicular to the axis of said closure,
• said wing means each including an edge portion adapted to frictionally engage said locking ring portion during axial displacement of said closure relative to said container whereby said pilfer band means resists rotation of said closure relative to said container,
• each of said wing means being disposed at an acute angle relative to the axis of said closure whereby said wing means are adapted to flex outwardly of said container during application of said closure to the container, said wing means generally resuming their configuration prior to application after said wing means are moved past said locking ring portion during application.

A closure for a container having a neck including a locking ring portion, comprising:

• a cap having a top wall portion and a skirt portion depending integrally therefrom, and
• pilfer band means joined to said skirt portion,
• said pilfer band means including a plurality of inwardly extending wing means, said wing means being adapted to move past said locking ring portion during application of said closure to said container, and to engage said locking ring portion during removal of said closure from said container whereby said pilfer band means resists removal of said closure from said container, each said wing means being movable generally about an axis which is non-perpendicular to the axis of said closure,
• said wing means each including an edge portion adapted to engage and cam against said locking ring portion during axial displacement of said closure relative to said container whereby a free end portion of each of said wing means is urged into engagement with a portion of said container neck disposed adjacent said locking ring portion whereby said pilfer band means resists removal of said closure from said container,
• each of said wing means being disposed at an acute angle relative to the axis of said closure whereby said wing means are adapted to flex outwardly of said container during application of said closure to said container, said wing means generally resuming their configuration prior to application after said wing means are moved past said locking ring portion during application.