Induction coil structure, solenoid pump, solenoid valve, and solenoid fluid pump

Abstract

An induction coil structure has a bobbin and at least one coil wound thereon using insulated wire. The winding density (or number of turns) of the wire is greater at both axial ends of the bobbin than in its axial middle region. This concentrates conductive material where the magnetic field is strongest (near the poles), reducing material usage and weight in the weaker central field, thereby achieving a lighter structure with lower power consumption and reduced thermal loss. A solenoid pump, a solenoid valve, and a solenoid fluid pump incorporating this improved coil structure are also disclosed.

Dependencies are inferred from the claim text.