Patent ID: 6492889
Filing Date: 2002-12-10
Classification: G11B,H01F,H02K

Abstract:
An electromagnetic actuator, comprising:a flux generator, having a first magnetic part and a second magnetic part, wherein said first magnetic part and said second magnetic part are opposite in order to generate a smooth first set of magnetic lines of force and a smooth second set of magnetic lines of force in an area of magnetic force; a first set of coils, connected to an object and positioned between said first set of magnetic lines of force and said second set of magnetic lines of force, further opposite to each other, wherein said first set of coils can move said object along a direction of a shaft in response to the tense of electric current actuated in said first set of coils; a second set of coils, connected to said object and positioned between said first set of magnetic lines of force and said second set of magnetic lines of force at four corners where each coil of said second set of coils faces each other across said object, wherein said second set of coils can rotate said object in response to the tense of electric current actuated in said second set of coils; and a metal piece, connected to said object and positioned adjacent to said first set of magnetic lines of force and said second set of magnetic lines of force in order to control said object at a height and further being able to return said object at a stationary neutral position when the coils are not actuated.