Importance

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Abstract

A frame or a pressure plate (end plate) has two horizontal sides and two vertical sides and is provided with holes or recesses for fastening means used for clamping heat exchange plates between the end plates. The end plate has only one hole or recess (6a, b; 7a, b; 8a, b; 9a, b) at the upper and lower horizontal side, the hole or recess (6a; 7a; 8a; 9a) at the upper side being located on one side of the vertical center line (L) and the hole or recess (6b; 7b; 8b; 9b) at the lower side being located on the other side of the vertical center line (L). The end plate has at least one hole or one recess (10a, b) at each vertical side such that a line between the uppermost hole or recess on each side of the vertical center line forms an angle with the vertical center line, larger than 0.degree. but less than 90.degree..

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First Claim