Schott Glaswerke

Glaswerke, Schott

Thomas Heisner

Bernd Schultheis

Martin Taplan

Herwig Scheidler

Stefan Hubert

Dietrich Busch

Karl-Heinz Juras

Boris Marx

Jurgen Naubik

Shaped articles made of brittle material having a low coefficient of thermal expansion, for example designed as glass or glass-ceramic plates, are typically encapsulated with a holding frame made of plastic, which is produced by directly encapsulating the edges of the shaped article with plastic by injection moulding. In order to avoid stress concentrations in the shaped article, which inevitably form as a consequence of the differences in thermal expansion and the material-dependent shrinkage behaviour, according to the invention shrinkage-absorbing elements are embedded between the holding frame and the shaped article, which elements additionally ensure a permanently elastic bearing of the shaped articles when used in practice and provide sufficient sealing during use.

Article made of brittle material encapsulated in an injection-molded

The invention provides a device for clasp the rims of openings in shaped bodies made of glass ceramic, glass or ceramic, especially openings for the passage of atmospheric gas burners on cooking hobs or stovetops, from mechanical damage and for preventing soiling and damage to arrangements situated underneath the shaped body owing to the ingress of liquids through the openings in the shaped body. The clasp reaches over the rim of the respective opening and extends onto both the top and bottom sides of the shaped body. A sealing and/or heat-insulating material is advantageously inserted between the shaped body and the clasp.

Device for protecting rims in glass or ceramic bodies

The invention relates to a plate of glass ceramic suitable as component of a cooking appliance with at least one region of the one-piece plate deviating from the main plane of the plate.

Plate of glass ceramic as component of a cooking appliance

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Mainz, Germany

Thomas Heisner