Patent ID: 7748683

Claim:
An electrically controlled flow valve comprising: a valve body defining a cavity having an interior surface and including first and second ports extending exterior of said valve body; an armature within said cavity, the movement of said armature for controlling the flow of fluid through said cavity; a leaf spring, said leaf spring supporting said armature within said cavity and providing a biasing force against said armature; wherein said leaf spring comprises centering leaf springs in combination with a plurality of orbitally disposed leaf spring elements radiating arcuately from a valve centering support and adapted such that a contact point of said leaf spring to said armature remains substantially at the same distance from the armature's centerpoint during in and out movement of said armature such that said orbitally disposed leaf spring elements are axially deflected against said interior surface of said valve body; a magnet coil in combination with said valve body, said magnet coil for channeling magnetic field for providing an urging force to said armature opposite the biasing three of said leaf spring; wherein the leaf spring biasing three is coordinated with the magnetic coil urging force.