Bayer Aktiengesellschaft

Dieter Schauf

Hans-Werner Depcik

Karl Oberbach

Klaus Protoschill

Complicated hollow bodies with undercuts and for multidimensional curves which do not permit the cores to be drawn out of the finished part, are pressed together from prefabricated shells (1) under simultaneously exact pre-shaping and are connected along the joints by injection-moulded plastics material.

Hollow bodies of plastic materials

A unitary wheel is injection molded from reinforced thermoplastic material in such a manner that the melt streams of material meet and coalesce in the spokes of the wheel. This wheel has improved strength since the melt streams do not meet and coalesce in the rim portion thereby making the rim impact resistant. Coalescence of the melt streams in the spokes of the wheel is accomplished by introducing the streams into certain of the spokes while separating those spokes from each other by an odd number of intermediary spokes to which no material is directly injected.

Growing community of inventors

Leichlingen, Germany

Dieter Schauf