Abstract: A piezoelectric valve whose housing defines a valve chamber wherein at least one piezoelectric flexural transducer is located. The piezoelectric flexural transducer possesses a contact face, which faces a first outer wall of the valve housing. This first outer wall is in the form of a wiring support which possesses a support body consisting of plastic material, which at the outer side opposite to the valve chamber bears a wiring arrangement. The wiring arrangement is in electrical contact by way of a via extending through a cutout in the support body with the piezoelectric flexural transducer, since the via consists of an electrically conductive elastic plug, against which the at least one contact face is thrust at the inner face of the support body.

Abstract: A piezoelectric valve whose housing defines a valve chamber wherein at least one piezoelectric flexural transducer is located. The piezoelectric flexural transducer possesses a contact face, which faces a first outer wall of the valve housing. This first outer wall is in the form of a wiring support which possesses a support body consisting of plastic material, which at the outer side opposite to the valve chamber bears a wiring arrangement. The wiring arrangement is in electrical contact by way of a via extending through a cutout in the support body with the piezoelectric flexural transducer, since the via consists of an electrically conductive elastic plug, against which the at least one contact face is thrust at the inner face of the support body.

Abstract: A steplessly variable-ratio drive has a drive wheel having a hub rotatable about a drive axis, adapted to be normally rotated in a forward direction about the axis, and having at least three angularly equispaced pivots radially equispaced from the axis. Respective segments each have an inner end pivoted at the respective pivot on the hub, an outer end radially offset from the respective pivot, and a radially outwardly convex curved outer surface. Respective springs braced generally radially between the outer ends of the segments and the inner ends of the adjacent segments urge the outer ends radially outward. A driven wheel has a hub rotatable about a driven axis substantially parallel to the drive axis, adapted to be normally rotated in the forward direction about the driven axis, and having a plurality of angularly equispaced pivots radially equispaced from the driven-wheel axis.