Patent ID: 6035980
Filing Date: 2000-03-14
Classification: F16F

Abstract:
A magnetic spring having 0- or negative damping characteristics, comprising:a first permanent magnet having a first magnetic pole of a first polarity on a face of said first permanent magnet and a second magnetic pole of a second polarity on said face of said first permanent magnet;a second permanent magnet having a first magnetic pole of the first polarity on a face of said second permanent magnet and a second magnetic pole of the second polarity on said face of said second permanent magnet, said first and second permanent magnets being spaced from each other and oriented such that the magnetic pole of the first polarity of said first permanent magnet is opposed to the magnetic pole of the first polarity of said second permanent magnet and such that the magnetic pole of the second polarity of said first permanent magnet is opposed to the magnetic pole of the second polarity of said second permanent magnet, said first and second permanent magnets having a variable opposing area between said faces of said first and second permanent magnets;a kinetic mechanism operatively coupled to said first and second permanent magnets for moving one of said first and second permanent magnets relative to the other of said first and second permanent magnets so as to change the opposing area between said faces of said first and second permanent magnets via an external force applied to said kinetic mechanism at a time of input and at a time of output, and for converting the external force applied to said kinetic mechanism into a repulsive force such that the repulsive force from a balanced position of said first and second permanent magnets is made greater at the time of output than at the time of input.