Containers

Claim 1

A PACKAGE FOR SHOE POLISH OR THE LIKE, COMPRISING A SHEET METAL CONTAINER FOR A SUPPLY OF THE PACKAGED MATERIAL AND A SNAP-OPEN LID THEREON HAVING A RELATIVELY RIGID TOP WALL OF LIGHTER GAUGE METAL THAN THAT OF SAID CONTAINER AND A RELATIVELY FLEXIBLE SKIRT OF SUBSTANTIAL UNIFORM CIRCULAR CYLINDRICAL PERIPHERAL CONTOUR DEPENDING THEREFROM, SAID TOP WALL INCLUDING A CENTAL DOWNWARDLY DISHED PORTION OF ARCUATE CROSS-SECTIONAL CONTOUR CONNECTED TO THE TOP EDGE OF SAID SKIRT BY A PERIPHERAL PORTION INCLUDING A FIRST OUTWARDLY EXTENDING ANNULAR RIDGE CONTINUOUS WITH THE PERIPHERAL EDGE OF SAID CENTRAL PORTION, A SECOND OUTWARDLY EXTENDING ANNULAR RIDGE CONTINUOUS WITH THE TOP EDGE OF SAID SKIRT AND AN INWARDLY EXTENDING ANNULAR RIDGE OPERATIVELY CONNECTING SAID FIRST AND SECOND ANNULAR RIDGES WHEREBY SAID TOP WALL IS RESISTANT TO DEFORMATION WHEN DOWNWARD LID OPENING PRESSURE IS APPLIED THERETO, SAID SKIRT HAVING A BOTTOM EDGE PORTION CUT AWAY IN AN ARC WHICH DEFINES SPACED FULCRUMS WHERE ITS ENDS INTERSECT ADJACENT BOTTOM EDGE PORTIONS OF THE SKIRT, SAID FULCRUM BEING ANGULARLY SPACED APART BETWEEN 160* AND 180* TO ENSURE EFFECTIVE LID ROCKING LEVERAGE, AND SAID CONTAINER INCLUDING AN ANNULAJR SIDE WALL OF WHICH AN UPPER PORTION IS CLOSELY EMBRACED BY PORTIONS OF SAID SKIRT, AND A PERIHERAL FLANGE EXTENDS UPWARDLY AND OUTWARDLY AT AN ANGLE OF NOT MORE THAN 45* FROM AN INTERMEDIATE PORTION OF SAID SIDE WALL WHEREBY TO PROVIDE A SEAT FOR BOTTOM EDGE PORTIONS OF SAID SKIRT AND FOR SAID FULCRUMS AND BEING ARRANGED AND ADAPTED TO LATERALLY ENGAGE BOTTOM PORTIONS OF SAID SKIRT AND CONFINE THE SAME AGAINST LATERAL SPREADING WHEN LID ROCKING PRESSURE IS APPLIED TO THE TOP WALL OF THE LID ABOVE SAID CUTAWAY ARC.