Back to results
US 7,859,169 B2Granted
Spring element for pretensioning a piezoelectric actuator and piezoelectric actuator with the spring element
AssigneeEpcos AG
InventorsWerner Stocker, Franz Veronik, Andreas Jakope, Manfred Reinisch
Life of this patent
Estimating the term…
Abstract
A spring element for pretensioning a piezoelectric actuator is specified, wherein the spring element has a tubular body with recesses. The recesses are each made in the form of a polygon with rounded corners. A piezoelectric actuator with such a spring element is also specified.
Claims18
A spring element for pretensioning a piezoelectric actuator, comprising a tubular body that has a plurality of recesses, wherein each recess has a shape in the form of a rhombus with rounded corners.
A piezoelectric actuator comprising:
- a piezoelectric multilayer component with a plurality of stacked piezoelectric layers and electrode layers, and
- a spring element comprising a tubular body with a plurality of recesses, each recess having a shape in the form of a rhombus with rounded corners, wherein the piezoelectric multilayer element is arranged at least partially within the spring element.
Dependencies are inferred from the claim text.