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Eta Sa Manufacture Horlogere Suisse

Clemens Scherer

Carsten Schuh

Christoph Hamann

Karl Lubitz

Andreas Wolff

Dieter Cramer

Thorsten Steinkopff

Wilhelm Hekele

Friedrich Durand

Hans Hellebrand

Iris Hahn

Yvan Pillet

Guido Käufer

Daniel Maeder

Guido KÄUFER

An electric coil comprising a coil core (), a main winding () surrounding the coil core () and having an electrically conductive coil wire, a start winding () surrounding the coil core () and having an electrically conductive coil wire, and an end winding () surrounding the coil core () and having an electrically conductive coil wire, is characterized in that the coil wire of the main winding (), the coil wire of the start winding (), and the coil wire of the end winding () are formed by a continuous wound wire, and at least the main winding (), preferably also the start winding (), is wound directly onto the coil core ().

Electric coil

A piezo actuator with an actuator body has at least one electrically conductive multi-layer film with a rigid electrical terminal element. The multi-layer film controls expansion and attraction of the actuator body. An electrical conduction layer of the multi-layer film has at least one recess to increase flexibility. The recesses in the conduction layer are, for example, photolitho-graphically produced.

Piezo actuator with multi-layer conductive film, and method for making same

In the operation of piezoactuators of multilayer construction, during the polarizing or during the operation of the piezoactuator tears can arise, due to voltages, in the metallization strips that are attached to the actuator on the outside for contacting the electrode layers. It is inventively proposed to install electrically conductive contact lugs directly at the stack or on the metallization strips such that a laterally protruding region remains, so that, even given arising tears, these nevertheless extend in the protruding region of the contact lug, and the tears are electrically bridged. Electrical terminal elements are provided so as the project above or laterally at the contact lugs.

Piezo actuator with novel contacting and production method

A piezoelectric actuator, and method of producing same, wherein electrically conductive contact tabs are applied onto metallization strips in such a way that a projecting region remains, so that in the event of cracks nevertheless occurring, such cracks run in the projecting region of the contact tab and are bridged electrically.

Piezoelectric actuator with a new type of contacting and a method for the production thereof

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Gilching, Germany

Clemens Scherer