Solvay Pharmaceuticals, Gmbh

Bochumer Eisenhutte Heintzmann & Company

Dieter Steppke

Horst Lass

Rudolf Seiz

Heinz Eickhoff

Martin Varchmin

Werner Kirschning

Peter Rekowski

Kurt Burow

Herbert Meyer

A door assembly for a sterile or safe room has a door leaf mounted in the door frame by hinge plates and a hose-type seal along the edge of the door leaf edge, when inflated presses against a smooth surface of the frame juxtaposed with the edge of the leaf. The seal is resilient so that it restores to its uninflated position releasing the lock in one to six seconds.

Safety door assembly, in particular a sterile door

A door-like closure for passageways in high-risk high-security installations includes a multilayer protective plate which has a rather high resistance to mechanical, thermal and chemical damaging influences, but which can be rather easily damaged by the action of explosives. To reinforce the protective plate, a reinforcing grid is juxtaposed therewith at the major surface thereof which faces the interior of the installation so that, when an attempt is made to destroy the protective plate by explosives, the reinforcing grid not only will increase the resistance of the protective plate to damage but also will permit the explosive shockwave and the possible debris of the protective plate propelled thereby to penetrate through the apertures of the grid without causing any considerable damage to the grid. The apertures of the grid have such dimensions that an intruder will not be able to reach through the aperture into the interior of the installation to, for instance, manipulate the lock of the closure. The grid may consist of a plurality of grid elements of polygonal cross sections which intersect each other at right angles in two sets and in one or two layers, being connected to each other between the two sets. However, the reinforcing grid may be a homogeneous reinforcing plate formed with the apertures. A plurality of passages may be provided in the protective plate, extending substantially parallel to the plane of the protective plate and serving to divert the flow of the effects of the explosion from normal to the plane of the protective plate to substantially parallel thereto. A contact mesh may be incorporated in the protective plate and generate a signal when the latter is damaged or otherwise tampered with.

Door-like closure

Growing community of inventors

Bochum, Germany

Dieter Steppke