Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
June 14, 2011
Patent Application Number
12949852
Date Filed
November 19, 2010
Patent Citations Received
Patent Primary Examiner
Patent abstract
A dust control inspection door has its door frame formed of frame elements each with a flat outer portion against the associated shroud, and with the seal flange or coaming radiused 90 degrees. The edge of the seal flange or coaming is perpendicular to the door to engage the gasket or seal bead, and is at zero degrees to the frame flat portions, so there is no angled bend line and no weak zones. The coaming is free of any horizontal surfaces on which dust may collect.
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