Patent ID: 8803644
Filing Date: 2014-08-12
Classification: G03F,H02K,H02N

Abstract:
1. A magnetic actuator comprising: a first part and a second part concentrically arranged therein, which parts are axially mutually movable, one of the parts being static and the other part being dynamic and in which the first part comprises at least one permanent magnet, whose polarity is in the axial direction, and the second part comprises at least two further permanent magnets which are present behind one another in axial direction and whose polarisations are in opposite directions, in essence each other's opposites, thereby creating a radial magnetic field component between them, and wherein one of the parts includes a coil for generating an additional magnetic field, wherein the static first part surrounds the dynamic second part, with the coil being located radially between the first part and the second part.