Patent ID: 9478726
Filing Date: 2016-10-25
CPC Classification: H01L

Claim Text:
1. An actuator module comprising: a piezoceramic multilayer actuator arranged in a casing, wherein the casing is hermetically sealed, and a chamber is arranged between the multilayer actuator and the casing, which chamber is entirely or partially filled with a medium that chemically transforms water, binds water, or both, wherein the casing has a casing sheath, a casing jacket and a casing base ( wherein the casing top is welded onto the casing sheath; wherein the casing base is made of ceramic and has metal-plated apertures into which the electrical terminals are soldered, wherein the casing base comprises metal and the electrical terminals are fed into the inside of the casing via a glass bushing or ceramic bushing in the casing base.