Patent ID: 6076836
Filing Date: 2000-06-20
Classification: B65G

Abstract:
Sealing system for a closing flap in a passage orifice of a facility wherein said closing flap may lie in parallel against an identical closing flap on another facility in a sealing plane and cooperate therewith when said facilities are coupled to each other in such a way that the interiors of the two facilities can be connected to one another and wherein said closing flap has a seal on its circumference such that, in at least a closed and coupled position, said closing flap seals off said passage orifice, wherein the improvement comprises said closing flap having, on the circumference, a groove which is defined by first and second annular legs, the first leg which, in a closed position, extends radially near to a sealing surface of the passage orifice, and the second leg being radially shortened relative to said first leg, and wherein said seal has, in the region radially outside the shortened second leg, an elastic bead which axially overlaps the shortened second leg such that when the facilities are in the uncoupled position, said elastic bead projects at least partially, beyond said sealing plane.