Title:
ELECTROMAGNETIC DEVICE
Document Type and Number:
Japanese Patent JPS5683907
Kind Code:
A
Abstract:
An electromagnetic device includes a stator having axially spaced pole pieces and windings which when energized cause adjacent pole pieces to have opposite magnetic polarity. An armature surrounds the stator and is of tubular form having a smooth internal surface. The exterior surface of the armature is machined such that at least at one end of the pole pitch distance of the stator the thickness of the armature is such that magnetic saturation of the material forming the armature occurs so that the lines of force between the armature and the pole piece extend in a direction inclined to the axis of the armature thereby resulting in a force acting to cause axial movement of the armature.
Inventors:
ARETSUKU HARII SEIRII
Application Number:
JP15834680A
Publication Date:
July 08, 1981
Filing Date:
November 12, 1980
Export Citation:
Assignee:
LUCAS INDUSTRIES LTD
International Classes:
H01F3/14; H01F7/16; H02K33/00; (IPC1-7): H01F7/16; H02K33/00