Importance

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Abstract

A thermic control element has a plate-like wall part and a membrane member which is peripherally coupled therewith which, on its one side, supports a locking element and, on its other side, a counter plate facing the wall part. The locking element, the membrane member and the counter plate are rigidly coupled with each other in their central area and the wall part has a cup-shaped curvature with a support face for the outer edge zone of the counter plate. An expansion medium is contained in a receiving chamber formed between the wall part and the membrane member. In the open end position of the locking element, the locking element and the wall part are provided with corresponding cooperating stroke engaging faces and, in the locking element closing position, the axial distance between the stroke engagement faces of the locking element and the wall part is smaller than the axial distance between the support face and the outer edge zone of the counter plate.

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First Claim