Diaphragm for dispensing liquids, gases or pourable goods has equilateral trapezoids which rest with its base against inner leg of neighboring trapezoid and are relocatable against each other

摘要

Diaphragm has equilateral trapezoids (3) which rest with its base (11) against internal leg (12) of neighboring trapezoid and are relocatable against each other, whereby trapezoids form outer contour of regular polygon in final position and whereby at least one external leg (14) acts on drive. Trapezoids, with its external leg, lie within framework.