Patent application number | Description | Published |
20080197314 | Fuel Injector With a Housing, and Method For Finishing and Labeling the Housing - A fuel injector has a housing for an actuator ( | 08-21-2008 |
20080203853 | Method For Producing a Monolithic Piezo Actuator With Stack Elements, Monilithic Piezo Actuator With Stack Elements, and Use of the Piezo Actuator - A piezo actuator has a stack element and at least one further stack element, wherein each of the stack elements has stacked piezoceramic layers and electrode layers arranged between the piezoceramic layers, each of the electrode layers extends to at least one of at least two lateral surface sections of the stack element which have external metallizations on them, and are connected to the electrode layers such that adjacently stacked electrode layers can have different electrical potentials applied to them indirectly via the external metallizations, the stack elements are arranged above one another to form a monolithic total stack, and connected to one another by at least one connecting layer. The following steps are provided: a) provision of the total stack and b) production of a load-relieving crack in the connecting layer. An electrical connector in the form of a wire can be fitted on the relevant external metallization regions. | 08-28-2008 |
20080203857 | Monolithic Piezoactuator With Rotation of the Polarisation in the Transition Region and Use of Said Piezoactuator - 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. | 08-28-2008 |
20090025201 | CONTACT MAT FOR AN ACTUATOR, AND ASSOCIATED PRODUCTION METHOD - A contact mat ( | 01-29-2009 |
20090283072 | SEALING ARRANGEMENT OF A PIEZOACTUATOR FOR A FUEL INJECTION VALVE OF AN INTERNAL COMBUSTION ENGINE - A sealing arrangement of a piezoactuator ( | 11-19-2009 |
20100102138 | PIEZOELECTRIC COMPONENT COMPRISING A SECURITY LAYER AND AN INFILTRATION BARRIER AND A METHOD FOR THE PRODUCTION THEREOF - A piezoelectric component with a monolithic stack, has electrode layers and piezoceramic layers arranged alternately one on top of the other, the piezoceramic layers have a piezoceramic, and having at least one porous security layer arranged in the stack for the formation of a crack if mechanical overload of the stack should occur. The piezoelectric component has an infiltration barrier arranged between the security layer and a lateral surface section of the stack for suppressing the penetration of a foreign substance into the security layer. The piezoelectric component can be as a piezoactuator for controlling a valve, particularly a valve of an internal combustion engine. | 04-29-2010 |
20110138593 | METHOD FOR PRODUCING A MONOLITHIC PIEZO ACTUATOR WITH STACK ELEMENTS, MONOLITHIC PIEZO ACTUATOR WITH STACK ELEMENTS, AND USE OF THE PIEZO ACTUATOR - A piezo actuator has a stack element and at least one further stack element, wherein each of the stack elements has stacked piezoceramic layers and electrode layers arranged between the piezoceramic layers, each of the electrode layers extends to at least one of at least two lateral surface sections of the stack element which have external metallizations on them, and are connected to the electrode layers such that adjacently stacked electrode layers can have different electrical potentials applied to them indirectly via the external metallizations, the stack elements are arranged above one another to form a monolithic total stack, and connected to one another by at least one connecting layer. The following steps are provided: a) provision of the total stack and b) production of a load-relieving crack in the connecting layer. An electrical connector in the form of a wire can be fitted on the relevant external metallization regions. | 06-16-2011 |
20150035412 | Piezo-Stack with Passivation, and a Method for the Passivation of a Piezo-Stack - A piezo-stack includes a plurality of lateral surfaces and a first passivation layer applied to a first lateral surface. The first passivation layer terminates flush with opposing lateral surfaces that adjoin the first lateral surface. | 02-05-2015 |
20150048722 | Method for Making Electrical Contact With an Electronic Component in the Form of a Stack, and Electronic Component Having a Contact-Making Structure - A method is provided for making electrical contact with an electronic component in the form of a stack formed from a plurality of material layers, which react upon application of an electric field, and a plurality of electrode layers, wherein each material layer is arranged between two of the electrode layers. An insulation structure is generated on at least one stack circumferential region of the stack, which exposes each second electrode layer of the at least one stack circumferential region for electrical contact to be made. Also, a contact-making structure is applied to the at least one stack circumferential region which is provided with the insulation structure. Before the step of generating the contact-making structure, the material layers are partially removed by a material-removing method such that the electrode layers are exposed close to the surface. | 02-19-2015 |