Top Flange Protective Cover for Thin Plate Container and Thin Plate Container Provided Therewith

Abstract

A package of a thin plate container 1 is prevented from being broken when vacuum packed. A top flange protective cover for a thin plate container detachable to the top flange which is provided on the thin plate container so as to protrude outward therefrom includes: an outside surface having no edges thereon; and a surface facing the top flange, including: a pair of abutting portions abutting against a flange portion of the top flange, for positioning in one direction; and a pair of fitting pawls abutting against the flange portion in one direction perpendicular to each of the abutting portions, for positioning in the other direction, wherein the protective cover is formed to cover the entire outside surface of the top flange when attached to the top flange. The thin plate container is desirably provided with the top flange protective cover for the thin plate container.

1 . A top flange protective cover for a thin plate container detachable to the top flange which is provided on the thin plate container so as to protrude outward therefrom, comprising:
 an outside surface having no edges thereon; and   a surface facing the top flange, including:
 a pair of abutting portions abutting against a flange portion of the top flange, for positioning in one direction; and 
 a pair of fitting pawls abutting against the flange portion in one direction perpendicular to each of the abutting portions, for positioning in the other direction, 
   wherein the protective cover is formed to cover the entire outside surface of the top flange when attached to the top flange.   
   
   
       2 . The top flange protective cover for a thin plate container of  claim 1 , wherein the protective cover is formed in a square dish shape which covers the entire flange portion according to the flange portion of the top flange. 
   
   
       3 . The top flange protective cover for a thin plate container of  claim 1 , wherein the protective cover is formed in a circular dish shape which covers the entire flange portion according to the top flange. 
   
   
       4 . The top flange protective cover for a thin plate container of  claim 1 , wherein two slits are formed from the circumferential edge to both sides of the fitting pawls to facilitate bending of the fitting pawls; and wherein handles are provided between each of the peripheral portions of the protective cover divided by the two slits and each fitting stopping pawl, for opening and closing the fitting pawls. 
   
   
       5 . A thin plate container having a top flange held by an arm of a carrier device, comprising:
 an outside surface having no edges thereon; and   a surface facing the top flange, including:
 a pair of abutting portions abutting against a flange portion of the top flange, for positioning in one direction; and 
 a pair of fitting pawls abutting against the flange portion in one direction perpendicular to each of the abutting portions, for positioning in the other direction, being formed to cover the entire outside surface of the top flange when attached to the top flange. 
   
   
   
       6 . The thin plate container of  claim 5 , wherein the flange portion of the top flange is formed in almost a square flat shape, and the top flange protective cover for a thin plate container is formed in a square dish shape which covers the entirety of the flange portion, and
 wherein fitting portions are provided on each of the four sides of the flange portion of the top flange, and fitted portions are provided at two locations at either one of or four locations at both of the pair of abutting portions and the pair of fitting pawls.