Abstract: Elastically deformable suction plates are provided for lifting and transporting delicate goods such as "fresh" concrete interlocking paving stones. In said suction plates, the total suction space is divided into numerous separate suction chambers which are totally enclosed. The design of such a suction plate and the vulcanization mould needed for its production are described.

Abstract: The invention relates to a composite bar for example for window or door frames or shutters comprising a plastic hollow profile bar with an inner and outer surface.Adjacent said surfaces substantially parallel thereto a metal flange is inserted into the interior of the plastic hollow profile bar. To increase the resistance to bending of this frame with respect to forces perpendicular to the window pane or door leaf without substantially reducing the thermal insulation the two metal flanges are connected together in shear-transmitting manner without metallic contact.

Abstract: In a hollow plastic rolling shutter slat coated on the weather side with a metal layer for reducing the heat transfer while retaining the resistance to bending the inner side of the building-side profile wall is also coated with a metal layer, a minimum spacing always being provided between the two metal layers to insure the thermal insulation. The metal layers have at least one surface reflecting thermal radiation or reducing thermal irradiation. For obtaining the necessary resistance to bending the inner transverse webs of the hollow plastic rolling shutter bar are formed in such a manner that they transmit the shear stresses occurring on bending.