Patent ID: 11972899
Assignee: nan
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G  F | IPC F  G  H

Claim 0:
1. A solenoid comprising:
a stator comprising a first stator tooth and a second stator tooth;
an armature comprising a first armature tooth and a second armature tooth, the armature moveable with respect to the stator over a predetermined stroke;
a coil associated with at least one of the stator and the armature for conducting an electric current and generating magnetic flux that is guided by the stator and the armature, at least one of the stator and the armature acting as a ferromagnetic core for the coil;
a first air-gap between the first stator tooth and the first armature tooth and having a first length;
a second air-gap between the second stator tooth and the second armature tooth and having a second length;
wherein the first and second lengths are constant to within a predetermined margin over the predetermined stroke when the first and second armature teeth overlap the first and second stator teeth respectively.