Tamper-evident cap

A tamper-resistant closure for mounting on a can having a body and a dome coupled to a top end of the body and formed to include an annular ridge surrounding a discharge valve mounted on the dome, the closure comprising

• a can including a side wall having an annular lower rim,
• a removable tamper band coupled to a lower edge of the annular lower rim to define a frangible tear line therebetween,
• means for engaging an annular ridge on a can to retain the cap on the can when the closure is mounted on the can in a tamper-resistant position, the engaging means including cap retainers coupled to the annular lower rim and tamper band retainers coupled to the removable tamper band,
• wherein the annular lower rim includes an annular rim strip and a series of downwardly extending retainer tabs positioned to lie in circumferentially spaced-apart relation to one another about the annular rim strip, the removable tamper band includes an annular band strip and a series of upwardly extending retainer mounts arranged to lie in circumferentially spaced-apart relation to one another about the annular band strip and spaces defined between adjacent downwardly extending retainer tabs to establish an annular alternating series of downwardly extending retainer tabs and upwardly extending retainer mounts lying in end-to-end relation to one another between the annular rim strip and band strip;
• and
• wherein the cap further includes a series of upright stacking ribs appended to a frustoconical-conical inner surface of the side wall and arranged to lie in uniformly circumferentially spaced-apart relation about the frustoconical-conical inner surface and each upright stacking rib is associated with only one of the retainer tabs and retainer mounts and includes a lowermost end positioned to lie adjacent to said only one of the retainer tabs and retainer mounts and along a line bisecting said only one of the retainer tabs and retainer mounts.

A tamper-resistant closure for mounting on a can having a body and a dome coupled to a top end of the and formed to include an annular ridge surrounding a discharge valve mounted on the dome, the closure comprising,

• a cap including a side wall having an inner surface,
• a removable tamper band coupled to a lower edge of the side wall to define a frangible tear line therebetween,
• a plurality of cap retainers coupled to the inner surface of the side wall to along and above the frangible tear line and adapted to engage an annular ridge on a can when the cap is mounted on the can, and
• a plurality of tamper band retainers coupled to an inner surface of removable tamper band to lie along and below the frangible tear line and adapted to engage an annular ridge on a can where the removeable tamper band is coupled to the lower edge of the side wall and the cap is mounted on the can, wherein the cap further includes a series of upright stacking ribs appended to the inner surface of the side wall and arranged to lie in uniformly circumferentially spaced-apart relation about the inner surface and each upright stacking rib is associated with only one of the cap retainers and tamper band retainers and includes a lowermost end positioned to lie adjacent to said only one of the cap retainers and tamper band retainers and along a line bisecting said only one of the cap retainers and tamper band retainers.

A tamper-resistant closure for mounting on a can having a body and a dome coupled to a top end of the body and formed to include an annular ridge surrounding a discharge valve mounted on the dome, the closure comprising

• a cap including a side wall having an inner surface,
• a removable tamper band coupled to a lower edge of the side wall to define a frangible tear line therebetween,
• a plurality of cap retainer coupled to the inner surface of the side wall to lie along and above the frangible tear line and adapted to engage an annular ridge on a can when the cap is mounted on the can, and
• a plurality of tamper band retainers coupled to an inner surface of the removable tamper band to lie along and below the frangible tear line and adapted to engage an annular ridge on a can where the removable tamper band is coupled to the lower edge of the side wall and the cap is mounted on the can, wherein a first of the tamper band retainers subtends an angle of about 69°, a first of the cap retainers subtends an angle of about 23.5°, a second of the tamper band retainers subtends an angle of about 75°, a second of the cap retainers subtends an angle of about 23.5°, a third of the tamper band retainers subtends an angle of about 75°, and a third of the cap retainers subtends an angle of about 23.5°.