Patent ID: 6067364
Filing Date: 2000-05-23
Classification: H04R

Abstract:
A taut armature reciprocating impulse transducer, comprising:an electromagnetic driver, for effecting an alternating electromagnetic field in response to an input signal;an armature, including upper and lower substantially parallel planar suspension members, coupled to said electromagnetic driver, said upper and lower substantially parallel planar suspension members each comprising a plurality of independent planar non-linear spring members arranged regularly about a central planar region within a planar perimeter region;a motional mass, supporting a plurality of permanent magnets arranged regularly about said motional mass, and suspended between said upper and lower substantially parallel planar suspension members about said central planar region, said permanent magnets being coupled to said alternating electromagnetic field for alternately moving said motional mass in response thereto; anda plurality of magnetic damping elements, connected to said planar perimeter region opposite said plurality of permanent magnets, wherein each magnetic damping element interacts with a permanent magnet to provide a non-linear, softening spring response.