Patents by Inventor Andreas Lenk

Andreas Lenk has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20090320255
    Abstract: According to various production methods for producing a piezoceramic multilayer actuator, in the course of the production method, multilayer locks (10) are electrochemically or mechanically processed in such a way that a recess structure is obtained. The lateral surfaces (22; 24) of the electrodes (20) inside these recesses are electrically insulated using the slip casting method in order to be able to contact the remaining electrodes by imprinting an outer metallization.
    Type: Application
    Filed: January 15, 2008
    Publication date: December 31, 2009
    Inventors: Axel Ganster, Susanne Kornely, Andreas Lenk, Andreas Mantovan, Carsten Schuh, Jörg Zapf
  • Patent number: 7545080
    Abstract: A piezoactuator has at least one piezoelectric-active partial stack with piezoceramic layers arranged one over the other with piezoceramic material and electrode layers arranged between the piezoceramic layers, at least one piezoelectric-inactive terminating region arranged over the partial stack and at least one transition region between the partial stack and the terminating region, the partial stack, the terminating region and the transition region all connected together to give a monolithic complete stack. The transition region has a transition region stack with piezoceramic layers arranged one over the other and electrode layers arranged between the piezoceramic layers both have a form and are arranged on each other such that, in the stack direction of the transition region stack, from piezoceramic layer to piezoceramic layer there is a successive rotation about a main axis of the polarity and/or a rotation of the main axis of the electric control is provided.
    Type: Grant
    Filed: July 26, 2006
    Date of Patent: June 9, 2009
    Assignee: Siemens Aktiengesellschaft
    Inventors: Harald Johannes Kastl, Andreas Lenk, Carsten Schuh, Claus Zumstrull
  • Publication number: 20080203857
    Abstract: A piezoactuator has at least one piezoelectric-active partial stack with piezoceramic layers arranged one over the other with piezoceramic material and electrode layers arranged between the piezoceramic layers, at least one piezoelectric-inactive terminating region arranged over the partial stack and at least one transition region between the partial stack and the terminating region, the partial stack, the terminating region and the transition region all connected together to give a monolithic complete stack. The transition region has a transition region stack with piezoceramic layers arranged one over the other and electrode layers arranged between the piezoceramic layers both have a form and are arranged on each other such that, in the stack direction of the transition region stack, from piezoceramic layer to piezoceramic layer there is a successive rotation about a main axis of the polarity and/or a rotation of the main axis of the electric control is provided.
    Type: Application
    Filed: July 26, 2006
    Publication date: August 28, 2008
    Inventors: Harald Johannes Kastl, Andreas Lenk, Carsten Schuh, Claus Zumstrull