Title:
【発明の名称】磁気ひずみ駆動モジュール
Document Type and Number:
Japanese Patent JP2753229
Kind Code:
B2
Abstract:
The drive modules (10) of a magnetostrictive transducer are fabricated from interleaved permanent magnet disks (2) (samarium cobalt) and high-strain, low-permeability magnetostrictive lanthanide alloy (Terfenol-D) disks (1) to form a stack (11) of such interleaved materials of substantially uniform magnetic field distribution in the stack. Two such stacks (11) in side-by-side relationship provide a series-aiding magnetic circuit completed through high-permeability flux return pole pieces (4) at their ends thereby providing a substantially uniform magnetic field distribution in the stack (11). Each stack (11) has longitudinally-extending and electrically-insulated planar cuts and each flux return pole piece (4) is a laminate of thin sheets of high-permeability electrically-insulated steel to reduce eddy current losses resulting from the AC field. The steel sheets are constrained by a nonmagnetic end-block (5) into which the steel sheets are inserted and bonded. AC coils (3) surround the stacks (11) to provide the AC field.
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Inventors:
REIMONDO HORUTSUIO
UIRIAMU JEI HARORUDO
JEEMUSU AARU SUTAAGESU
UIRIAMU JEI HARORUDO
JEEMUSU AARU SUTAAGESU
Application Number:
JP13882987A
Publication Date:
May 18, 1998
Filing Date:
June 02, 1987
Export Citation:
Assignee:
REISEON CO
International Classes:
B06B1/06; B06B1/08; H01L41/12; H01L41/20; H04R15/02; (IPC1-7): H04R15/02; H01L41/12
Domestic Patent References:
| JP5167087A | ||||
| JP5171087A | ||||
| JP5171085A | ||||
| JP4322269B1 |
Attorney, Agent or Firm:
Jun Tsuda (3 others)