Patent ID: 7077270
Filing Date: 2006-07-18
Classification: H01L

Abstract:
1. A thin plate storage container comprising: a container main body defining an interior for containing and supporting a plurality of thin plates, said container main body having a flange defining an opening for insertion and removal of the thin plates; a cover member extending in a lateral direction across and closing the opening of the container main body to keep the interior of the container main body clean, said cover member having a double-seal mechanism for sealing the interior of the container main body, the double-seal mechanism comprising: an annular inner seal piece attached to a peripheral edge of the cover member, abutting against the container main body, and thereby sealing the interior of the container main body, the inner seal piece comprising a support portion fixed to the cover member and defining the inner peripheral edge of the annular inner seal piece, a connecting portion integral with and freely extending laterally outward from the support portion, and a rounded distal end portion of a diameter greater than the thickness of the connecting portion, integral with the connecting portion and defining a peripheral edge of the inner seal piece; an outer seal piece attached to the peripheral edge of the cover member outward of the inner seal piece relative to the interior of the container main body, abutting against the container main body, and thereby sealing the container main body; an inner peripheral lip portion of said cover member that serves as a seal pressing portion, that abuts against and presses the inner seal piece against an annular seal reception inner step that is formed in said flange opposed to the seal pressing portion, when the cover member is attached to the container main body.