A method of operating a solenoid actuator is described. The solenoid actuator comprises an armature, pole piece(s), electromagnet coil(s) arranged, in response to energisation, to cause travel of the armature between first and second positions along a dire...

A short travel solenoid actuator is disclosed. The solenoid actuator comprises a tube (130), an armature (138) disposed inside the tube, first and second inner pole pieces (139, 140) disposed inside the tube and an outer pole piece (135) which lies outside...

A solenoid actuator is described. The solenoid actuator comprises an armature, pole piece(s), electromagnet coil(s) arranged, in response to energisation, to cause travel of the armature between first and second positions along a direction of travel, where...