Patent ID: 8063726

Claim:
An electromagnetic actuating device comprising an armature unit which can be moved along a longitudinal axis relative to a stationary core by passing a current through a coil device, said armature unit being designed to form or define a fluid flow channel, wherein the armature unit has at one end an axially elongate cylindrical section made from a metal material, to which an annular groove-shaped section of reduced outer diameter is connected in the direction of the longitudinal axis, the one end has a cone-shaped annular surface which forms a wall region of the annular groove-shaped section, wherein the fluid flow channel extends into the annular groove-shaped section, wherein the fluid flow channel comprises a through-bore which runs through the elongate cylindrical section obliquely with respect to the longitudinal axis and through the longitudinal axis, so that a first opening is formed in the cone-shaped annular surface at the one end and an opposite second opening of the through-bore are provided outside the cylindrical outer wall on another end of the elongate section, wherein the second opening of the through-bore is formed on a cone-shaped annular surface on the other end of the armature unit.