Patent ID: 6166478
Filing Date: 2000-12-26
Classification: B81B,G02B

Abstract:
A microelectromechanical system comprising:at least first and second flaps secured to a substrate, said substrate defining a plane, said first and said second flaps being hinged to be rotatable away from the plane of said substrate,first magnetic material on said first flap in a volume such that said first flap rotates when subjected to an external magnetic field H.sub.t1, andsecond magnetic material on said second flap in a volume such that said second flap rotates when subjected to an external magnetic field H.sub.t2 ;said H.sub.t2 being greater than said H.sub.t1, so that said first flap rotates before said second flap in an external magnetic field which increases from H.sub.t1 to H.sub.t2.