Patent ID: 7775361

Claim:
A package ( 1 , 11 ) for abrasive grinding wheels, comprising: a base ( 4 ) providing an inner space adapted to contain stacked abrasive grinding wheels; and a cover ( 3 ) configured to couple to the base ( 4 ) so as to close the inner space, the base ( 4 ) and cover ( 3 ) being made of insulating material suitable to insulate the contained grinding wheels against atmospheric agents, wherein the base ( 4 ) comprises a mantle ( 4 b ) and an end edge region ( 4 a ), the mantle ( 4 b ) having an outer surface and the end edge region ( 4 a ) being recessed with respect to the outer surface of the mantle ( 4 b ) such that the mantle ( 4 b ) forms a shoulder ( 4 e ) between the outer surface and the end edge region ( 4 a ), wherein the cover ( 3 ) comprises an inside surface ( 3 f ) and an external side surface ( 3 a ) pendent therefrom, wherein the external side surface ( 3 a ) of the cover ( 3 ) has a shape configured to overlap the end edge region ( 4 a ) of the base ( 4 ) when the cover ( 3 ) is coupled to the base ( 4 ), the external side surface ( 3 a ) and the outer surface of the mantle ( 4 b ) configured to form a level outer surface when the cover ( 3 ) is coupled to the base ( 4 ), and an endmost part of the end edge region ( 4 a ) configured to bear on the inside surface ( 3 f ) of the cover ( 3 ) when the cover ( 3 ) is coupled to the base ( 4 ) so that a continuous slit ( 10 ) is provided between a border end of the external side surface ( 3 a ) and the shoulder ( 4 e ) of the mantle ( 4 b ), wherein the base ( 4 ) is cylindrical and has a closing plane part ( 4 c ), wherein the mantle ( 4 b ) has a projecting portion that projects from the closing plane part ( 4 c ) to define four lips ( 4 d ) arranged in a peripheral annular space of the base, and wherein the side surface ( 3 a ) of the cover ( 3 ) is cylindrical and comprises i) a cover surface surrounded by the side surface ( 3 a ), and ii) four projections ( 3 c ) projecting from the cover surface and shaped to define an annular plane portion ( 3 e ) peripheral to the cover ( 3 ) and between outer peripheral edges of the four projections ( 3 c ) and the external side surface ( 3 a ), the annular plane portion ( 3 e ) having a shape such that the four lips ( 4 d ) of the base snugly engage with the annular plane portion ( 3 e ) of the cover when the cover ( 3 ) is coupled to the base ( 4 ), and the four projections ( 3 c ) defining a cross-shape groove ( 3 d ) shaped so as to receive and contain package strapping.