Title:
【発明の名称】磁気ロッ?による少なくとも二つの安定位置を有する電磁ア?チュエー?
Document Type and Number:
Japanese Patent JPH11505998
Kind Code:
A
Abstract:
PCT No. PCT/FR96/00824 Sec. 371 Date May 15, 1998 Sec. 102(e) Date May 15, 1998 PCT Filed May 31, 1996 PCT Pub. No. WO96/38904 PCT Pub. Date Dec. 5, 1996An electromagnetic actuator has four positions which are stable in the absence of a current and moves rapidly between these positions when acted upon by a current. The actuator has a thin, rotatable magnet (3) with two pairs of magnetic poles transversally magnetised in alternate directions, and a stator member having four pole pieces (9-12, 34-37, 48-51) of developed length P, each with an excitation coil. Two consecutive poles of the thin magnet (3) are spaced by a distance d. The thin magnet (3) is movable in an airgap of width E. wherein the size ratio P:E and P:d is greater than 8. The invention is useful for driving a device such as a valve or a switch.
Inventors:
Ndelle, pierre
Application Number:
JP53626496A
Publication Date:
May 25, 1999
Filing Date:
May 31, 1996
Export Citation:
Assignee:
Sense-S.A.
International Classes:
H02K21/24; H02K26/00; H02K33/16; H02K37/12; (IPC1-7): H02K21/24; H02K33/16; H02K37/12
Attorney, Agent or Firm:
Keiichi Ota