Patent ID: 7482902

Claim:
A linear magnetic drive, comprising: a first coil for obtaining a current; a first iron core passing through said first coil, said first iron core formed with at least one magnetic gap allowing a magnetic flux to pass through said gap; and a moveable armature including a first permanent magnet and a yoke; said gap of said first iron core defining an edge of said first iron core; said armature being moveable to a first limit position in which said first permanent magnet at least partially fills said gap of said first iron core and said yoke rests on said edge of said first iron core; and said armature being moveable in a movement direction, and said first coil producing a magnetic field passing through said gap transversely with respect to the movement direction of said armature; wherein said first permanent magnet provides a magnetic flux that holds said yoke when said armature is in the first limit position.