초록 ▼

A tamper-evident closure for a wide mouth container. The closure member has a central panel and a downwardly opening rim cavity encircling the central panel and adapted to receive therein a top rim of the food container. The rim cavity is defined by a pair of upstanding, radially spaced skirt segmen

A tamper-evident closure for a wide mouth container. The closure member has a central panel and a downwardly opening rim cavity encircling the central panel and adapted to receive therein a top rim of the food container. The rim cavity is defined by a pair of upstanding, radially spaced skirt segments connected at their respectrive upper edges by a top rim segment. A radially outer one of the skirt segments has adjacent a lower edge thereof a radially inwardly projecting and circumferentially extending first flange adapted to snugly fit under and frictionally engage the lip on the food container. In addition, the radially outer skirt also has a radially outwardly projecting second flange contiguous with and oriented below the first flange. A plurality of generally inverted V-shaped radially outwardly projecting rim segments are integrally connected between each set of mutually adjacent circumferential ends of at least the second flange. The inverted V-shaped rim segments each have a pair of wall segments each projecting radially outwardly from a respective one of the mutually adjacent circumferential ends of at least the second flange. The pair of walls extend inclined upwardly from the second flange toward each other to and integral connection forming an apex. Each of the plural apexes defines stress concentration structure for the material of the closure member so that a lifting force applied to one of the second flanges will cause the material of the closure member to break only at the apexes.

대표청구항 ▼

A tamper-evident closure for a wide mouth container having a top rim presenting a radially outwardly projecting lip thereon, said closure comprising: a closure member having a size to cover the open top of the container when applied thereto, said closure member having a central panel and a downwardl

A tamper-evident closure for a wide mouth container having a top rim presenting a radially outwardly projecting lip thereon, said closure comprising: a closure member having a size to cover the open top of the container when applied thereto, said closure member having a central panel and a downwardly opening rim cavity encircling said central panel and adapted to receive therein the top rim of the container, said rim cavity being defined by a pair of upstanding radially spaced skirt segments connected at their respective upper edges by a top rim segment, a radially outer one of said skirt segments having adjacent a lower edge thereof a radially inwardly projecting and circumferentially extending first flange adapted to snugly fit under and frictionally engage the lip on the container, and a plurality of circumferentially spaced, radially outwardly projecting second flanges, each contiguous with and oriented below said first flange; a plurality of generally inverted V-shaped, radially outwardly projecting, rim segments integrally connected between each set of mutually adjacent circumferential ends of said second flanges, said inverted V-shaped rim segments each having a pair of wall segments each projecting radially outwardly from a respective one of said mutually adjacent circumferential ends of at least said second flanges, said pair of walls extending inclined upwardly from at least said second flanges toward each other to an integral connection thereof forming an apex, said apex defining a stress concentration means for the material of said closure member such that a lifting force applied to one of said plural second flanges will cause the material of said closure member to break only at said apexes located at opposite circumferential ends of said second flanges to which said lifting force has been applied to allow for continued tearing of said material of said closure member.