Tamper-evident overcap

A tamper-evident overcap for use on a can having a dispenser valve and an annular lip surrounding the dispenser valve, the overcap comprising

• a closure including a top, a base, and a side extending downwardly from the top to the base, and
• an annular tear strip appended to the base of the closure along separate first and second frangible tear lines, the tear strip including a first arcuate section connecting to the base of the closure along the first frangible tear line and carrying a first retainer flange adapted to engage an underside of the annular lip, a pull tab coupled to the first arcuate section, a second arcuate section connecting to the base of the closure along the second frangible tear line and carrying a second retainer flange adapted to engage the underside of the annular lip, a tether section spaced from the base of the closure and arranged to interconnect the first and second retainer flanges,
• wherein the tether section includes a curved rail arranged to lie in spaced-apart relation to an exterior surface of the base of the closure, a first rail mount coupled to the first arcuate section and a first end of the curved rail, and a second rail mount coupled to the second arcuate section and a second end of the curved rail, and
• wherein the base of the closure includes a curved wall providing the exterior surface and including an inwardly facing interior surface and the base of the closure further includes a third retainer flange appended to the inwardly facing surface and adapted to engage the underside of the annular lip prior to and after separation of the tear strip from the base of the closure along the first and second frangible lines.

A tamper-evident overcap for use on a can having a dispenser valve and an annular lip surrounding the dispenser valve, the overcap comprising

• a closure,
• first retainer means for providing two permanent retainer flanges adapted to engage an underside of the annular lip to retain the closure in a mounted position on the can, the first retainer means being coupled to the closure to remain therewith, and
• a tear strip coupled to the closure along a frangible tear line, the tear strip including second retainer means for providing two temporary retainer flanges adapted to engage the underside of the annular lip and to cooperate with the two permanent retainer flanges to retain the closure in the mounted position on the can until the tear strip is separated from the closure to disengage the two temporary retainer flanges from the annular lip without disengaging the two permanent retainer flanges from the annular lip
• wherein the first retainer means includes a first wall coupled to the closure, a second wall coupled to the closure and arranged to lie in spaced-apart confronting relation to the first wall, a first of the two permanent retainer flanges is coupled to an inwardly facing surface of the first wall, and a second of the two permanent retainer flanges is coupled to an inwardly facing surface of the second wall to extend in a direction toward the first of the two permanent retainer flanges
• wherein the first wall is curved and has an arc length and the second wall is curved and has an arc length less than the arc length of the first wall, and
• wherein the tear strip includes a pull tab arranged to lie in spaced-apart relation to the first of the permanent retainer flanges to position the first wall therebetween and a tether section arranged to lie in spaced-apart relation to an exterior surface of the second wall to define a slot therebetween and in spaced-apart relation to the second of the two permanent flanges to position the second wall therebetween, the second retainer means includes a first arcuate section lying in one space between the first and second walls and interconnecting the pull tab and one end of the tether section and carrying a first of the two temporary retainer flanges and a second arcuate section lying in another space between the first and second walls and connecting to another end of the tether section, and the frangible tear line is established along a boundary between the first arcuate section and the closure and along a boundary between the second arcuate section and the closure.

A tamper-evident overcap for use on a can having a dispenser valve and an annular lip surrounding the dispenser valve, the overcap comprising

• a closure,
• first retainer means for providing two permanent retainer flanges adapted to engage an underside of the annular lip to retain the closure in a mounted position on the can, the first retainer means being coupled to the closure to remain therewith, and
• a tear strip coupled to the closure along a frangible tear line, the tear strip including second retainer means for providing two temporary retainer flanges adapted to engage the underside of the annular lip and to cooperate with the two permanent retainer flanges to retain the closure in the mounted position on the can until the tear strip is separated from the closure to disengage the two temporary retainer flanges from the annular lip without disengaging the two permanent retainer flanges from the annular lip
• wherein the second retainer means includes a first arcuate section coupled to the closure along a portion of the frangible tear line and a second arcuate section coupled to the closure along another portion of the frangible tear line and arranged to lie in spaced-apart confronting relation to the first arcuate section, a first of the two temporary retainer flanges is coupled to an inwardly facing surface of the first arcuate section, and a second of the two temporary retainer flanges is coupled to an inwardly facing surface of the second arcuate section to extend in a direction toward the first of the two temporary retainer flanges, and
• wherein the tear strip further includes a pull tab coupled to the first arcuate section and arranged to lie in close proximity to a first of the permanent retainer flanges and a tether section coupled to the first and second arcuate sections and arranged to lie in spaced-apart relation to the second of the permanent retainer flanges to define a slot therebetween.

A tamper-evident overcap for use on a can having a dispenser valve and an annular lip surrounding the dispenser valve, the overcap comprising

• a closure,
• first retainer means for providing two permanent retainer flanges adapted to engage an underside of the annular lip to retain the closure in a mounted position on the can, the first retainer means being coupled to the closure to remain therewith, and
• a tear ship coupled to the closure along a frangible tear line, the tear strip including second retainer means for providing two temporary retainer flanges adapted to engage the underside of the annular lip and to cooperate with the two permanent retainer flanges to retain the closure in the mounted position on the can until the tear strip is separated from the closure to disengage the two temporary retainer flanges from the annular lip without disengaging the two permanent retainer flanges from the annular lip
• wherein the closure includes a base coupled to the second retainer means along the frangible tear line and to the first retainer means, the base includes an inclined annular wall and a cylindrical band arranged to interconnect the inclined annular wall and the first and second retainer means, and further comprising a plurality of circumferentially spaced-apart stacking ribs coupled to the inclined annular wall and to the cylindrical band and adapted to engage a top side of the annular lip prior to and after separation of the tear strip from the base of the closure along the frangible tear line.

A tamper-evident overcap for use on a can having a dispenser valve and an annular lip surrounding the dispenser valve, the overcap comprising

• a closure,
• first retainer means for providing two permanent retainer flanges adapted to engage an underside of the annular lip to retain the closure in a mounted position on the can, the first retainer means being coupled to the closure to remain therewith, and
• a tear strip coupled to the closure alone a frangible tear line, the tear strip including second retainer means for providing two temporary retainer flanges adapted to engage the underside of the annular lip and to cooperate with the two permanent retainer flanges to retain the closure in the mounted position on the can until the tear strip is separated from the closure to disengage the two temporary retainer flanges from the annular lip without disengage the two permanent retainer flanges from the annular lip
• further comprising first and second squeeze-removal pads arranged in opposing relation to one another on the closure to provide means for temporarily deforming the closure to move the two permanent retainer flanges away from one another to disengage the annular lip while the overcap is mounted on the can and after separation of the tear strip from the closure in response to movement of the first squeeze-removal pad toward the second squeeze-removal pad so that the overcap can be removed from a mounted position on the annular lip of the can.

A tamper-evident overcap for use on a can having a dispenser valve and an annular lip surrounding the dispenser valve, the overcap comprising

• a closure including a top, a base, and a side extending downwardly from the top to the base, the base including a first annular band and a second annular band coupled to the first annular band, the second annular band including, in series, a first curved wall connecting to the first annular band and carrying a fourth retainer flange adapted to engage an underside of the annular lip, a first arcuate section connecting to the first annular band and to the first curved wall along a first frangible tear line and carrying a first retainer flange adapted to engage the underside of the annular lip, a second curved wall connecting to the first annular band and to the first arcuate section along the first frangible tear line and carrying a third retainer flange adapted to engage the underside of the annular lip, and a second arcuate section connecting to the first and second curved walls and to the first annular band along a second frangible tear line separate from the first frangible tear line and carrying a second retainer flange adapted to engage the underside of the annular lip,
• a pull tab coupled to the first arcuate section, and
• a tether section coupled to each of the first and second arcuate sections, the pull tab, first arcuate section, tether section, and second arcuate section cooperating to define a tear strip configured to be separated from the closure along the first and second frangible tear lines.