Container and closure having fastening means

Claim 2

A closure for use with a container having an annular end portion defining a radially outwardly opening annular recess, said closure comprising: a unitary wall element formed of molded synthetic resin and having a transverse center wall, and a peripheral portion comprising a split annular flange having spaced end portions and radially inwardly projecting securing structure; and means for constricting the flange to urge the securing structure radially inwardly, said securing structure being adapted to be fitted into an annular recess of a container end portion as a result of such constriction of the flange, said means for constricting the flange comprising a pair of radially outturned tabs adjacent said flange end portions, and retaining means movable to an overcenter position for adjustably drawing said tabs toward each other and releasably locking said securing structure in said annular recess when said retaining means is in said overcenter position.

Claim 3

The closure of claim 1 wherein said flange includes a downwardly widening notch defining the split portion thereof.

Claim 4

The closure of claim 1 wherein said flange includes a downwardly widening triangular notch defining the split portion thereof.

Claim 5

The closure of claim 1 wherein said flange includes a continuously annular upper portion and a discontinuous, split lower portion.

Claim 6

The closure of claim 1 wherein said flange includes a downwardly widening notch defining the split portion thereof, and said tabs are formed unitarily integrally with said flange at opposite sides of said notch.

Claim 7

A closure for use with a container having an annular end portion defining a radially outwardly opening annular recess, said closure comprising: a unitary wall element formed of molded synthetic resin and having a transverse center wall, and a peripheral portion comprising a split annular flange having spaced end portions and radially inwardly projecting securing structure; and means for constricting the flange to urge the securing structure radially inwardly, said securing structure being adapted to be fitted into an annular recess of a container end portion as a result of such constriction of the flange, said means for constricting the flange comprising a pair of radially outturned tabs adjacent said flange end portions, and retaining means movable to an overcenter position for adjustably drawing said tabs toward each other and releasably locking said securing structure in said annular recess when said retaining means is in said overcenter position, said retaining means comprising a loop element having a first portion embracing one of said tabs, and an opposite second portion, and a lever having a first portion partially engaging the other of said tabs, and a second portion embracing said second portion of the loop element being disposed in an overcenter disposition relative to a line through said first portion of the loop element and said first portion of the lever in said overcenter position of said retaining means.

Claim 8

A closure for use with a container having an annular end portion defining a radially outwardly opening annular recess, said closure comprising: a unitary wall element formed of molded synthetic resin and having a transverse center wall, and a peripheral portion comprising a split annular flange having spaced end portions and radially inwardly projecting securing structure; and means for constricting the flange to urge the securing structure radially inwardly, said securing structure being adapted to be fitted into an annular recess of a container end portion as a result of such constriction of the flange, said means for constricting the flange comprising a pair of radially outturned tabs adjacent said flange end portions, and retaining means movable to an overcenter position for adjustably drawing said tabs toward each other and releasably locking said securing structure in said annular recess when said retaining means is in said overcenter position, said retaining means comprising a loop element having a first portion embracing one of said tabs, and an opposite second portion, and a lever having a first portion partially engaging the other of said tabs, and a second portion embracing said second portion of the loop element being disposed in an overcenter disposition relative to a line through said first portion of the loop element and said first portion of the lever in said overcenter position of said retaining means.

Claim 9

The closure of claim 6 wherein said first and second portions of the loop element comprise parallel rectilinear portions.

Claim 10

The closure of claim 6 wherein said tabs define circular openings facing outwardly away from each other, said tabs extending about said openings greater than 180°.

Claim 11

The closure of claim 6 wherein said tabs define circular openings facing outwardly away from each other, said tabs extending about said openings greater than 180°, said first portion of the loop element having a circular cross section and being received in the opening of one of said tabs, said first portion of the loop element having a diameter substantially equal to the diameter of the circular opening in which it is received.

Claim 12

The closure of claim 6 wherein said tabs define circular openings facing outwardly away from each other, said tabs extending about said openings greater than 180°, said first portion of the lever having a circular cross section and being received in the opening of one of said tabs, said first portion of the lever having a diameter substantially equal to the diameter of the circular opening in which it is received.

Claim 13

The closure of claim 6 wherein said tabs define circular openings facing outwardly away from each other, said tabs extending about said openings greater than 180°, said first portion of the loop element having a circular cross section and being received in the opening of one of said tabs, said first portion of the loop element having a diameter substantially equal to the diameter of the circular opening in which it is received, said first portion of the lever having a circular cross section and being received in the opening of the other of said tabs, said first portion of the lever having a diameter substantially equal to the diameter of the circular opening in which it is received.

Claim 14

The closure of claim 6 wherein said lever comprises an elongated member defining an outer surface, an inner surface, and opposite ends, said second portion of the lever extending inwardly from said inner surface at one of said ends.

Claim 15

The closure of claim 6 wherein said lever comprises an elongated member defining an outer surface, an inner surface, and opposite ends, said second portion of the lever extending inwardly from said inner surface at one of said ends, said lever having a longitudinally extending rib on said outer surface outwardly of said second portion thereof.

Claim 16

The closure of claim 6 wherein said lever comprises an elongated member defining an outer surface, an inner surface, and opposite ends, said second portion of the lever extending inwardly from said inner surface at one of said ends, said first portion of the lever being disposed at a distal portion of said one of said ends.

Claim 17

The closure of claim 6 wherein said lever comprises an elongated member defining an outer surface, an inner surface, and opposite ends, said second portion of the lever extending inwardly from said inner surface at one of said ends, said lever having a first, longitudinally extending rib on said outer surface outwardly of said second portion thereof, and a second, longitudinally extending rib on said inner surface adjacent the other of said opposite ends.