US PATENT SUBCLASS 493 / 139
.~.~.~.~.~ Integral interlocking closure

Current as of: June, 1999
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493 /   HD   MANUFACTURING CONTAINER OR TUBE FROM PAPER; OR OTHER MANUFACTURING FROM A SHEET OR WEB

51  DF  CONTAINER MAKING {2}
52  DF  .~ Rigid container (e.g., box, carton, cap, cup, etc.) {10}
121  DF  .~.~ Securing {6}
136  DF  .~.~.~ By interfitting of container portions {2}
137  DF  .~.~.~.~ Interlocking tab and slot {2}
139.~.~.~.~.~ Integral interlocking closure

DEFINITION

Classification: 493/139

Integral interlocking closure:

(under subclass 137) Method or apparatus wherein the portion of the receptacle being fastened is adapted to cover an external opening of the receptacle and wherein the interfitting of the portions is to secure that cover portion in the closed position.

SEE OR SEARCH THIS CLASS, SUBCLASS:

102+, for closing a container by assembling a distinct closure therewith.

156+, for closing an end of a rigid, nonrectangular container.