Drive system for acoustic devices
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United States of America Patent
Stats
-
Oct 10, 1995
Grant Date -
N/A
app pub date -
Jan 14, 1994
filing date -
Aug 29, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A drive system for acoustic devices comprising drive devices, the projecting driving studs (14,15) of which are connected to pressure beams (27,28) of the acoustic device, the drive devices comprising a fixture frame (26) inside of which there are located drive units with an intermediate mechanical prestress device (22,23,24,25), the drive units comprising stator and drive cells stacked by means of guide rings (4,5) and guide discs (11), the stator cell comprising a magnetizing coil (1) with a surrounding tube (2) of soft-magnetic material fixed inside a fixture tube (3), and the drive cell comprising a cylindrical magnetic pellet (6) , discs of soft-magnetic material (7,8) and of permanent-magnetic material (9,10) making contact with said magnetic pellet.
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Family
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Cited Art Landscape
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