Electromagnetic actuator with controlled attractio

专利名称：Electromagnetic actuator with controlled

attraction force

发明人：David Walraet申请号：US10504740申请日：20030228公开号：US07042321B2公开日：20060509

专利附图：

摘要：The invention relates to an electromagnetic actuator comprising an actuatormember () connected to an armature () which is movable under drive from a drivemember comprising at least one coil () for generating magnetic flux in a core () having a

face facing a face of the armature (), at least one of the facing faces including at least oneset-back portion (), the armature () and the core () being arranged, in a first zone () of thearmature () and of the core () including the set-back portion, to define a first magneticpath which is interrupted by an air gap that is not less than the setback of the set-backportion () when the armature () bears against the core (), and in a second zone () of thearmature () and of the core () excluding the set-back portion, to define a second magneticpath which is interrupted solely by a residual air gap when the armature () bears againstthe core (), the total area of the set-back portion being no greater than an area thatwould bring the magnetic flux to saturation in the second zone of the armature.

申请人：David Walraet

地址：Saint-Germain en Laye FR

国籍：FR

代理机构：Foley & Lardner LLP

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