Nesting Container Lids with Snap On Wings

Abstract

Stackable lids for a container each include a top surface facing generally in a first direction and a bottom surface opposite the top surface and facing generally in a second direction. Pivotable wing portions extend from each side edge of the lid and each pivotable wing portion is joined to its respective side edge by a hinge. The wing portions are moveable between engaged and disengaged positions, and an inner surface of each wing includes a tab member configured for detent engagement with a rim of the container. The lid also includes corner portions extending between the side edges. Each corner portion includes a skirt portion extending generally in the second direction. Each corner portion also defines a recessed shoulder configured to receive the skirt portion of another when the lids are stacked.

1 . A compressible seal member for a container lid comprising:
 a body defining a cross section, the cross section including a substantially square and hollow outer portion, an inner portion, and a plurality of webs extending between the inner portion and the outer portion.   
     
     
         2 . The compressible seal member of  claim 1 , wherein the substantially square and hollow outer portion includes substantially straight side walls. 
     
     
         3 . The compressible seal member of  claim 1 , wherein the substantially square and hollow outer portion includes curved walls. 
     
     
         4 . The compressible seal member of  claim 1 , wherein the curved walls are convex. 
     
     
         5 . The compressible seal member of  claim 1 , wherein the cross section is substantially symmetrical about both a first axis and a second axis that is substantially perpendicular to the first axis. 
     
     
         6 . The compressible seal member of  claim 5 , wherein each of the plurality of webs is substantially aligned with one of the first axis and the second axis. 
     
     
         7 . The compressible seal member of  claim 1 , wherein the body includes a plurality of raised ridges formed on outer surfaces of the outer portion. 
     
     
         8 . The compressible seal member of  claim 1 , wherein the inner portion is substantially circular. 
     
     
         9 . The compressible seal member of  claim 1 , wherein the inner portion is hollow.