The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 12, 2016
Filed:
Oct. 06, 2011
Rainer Michaelsen, Berlin, DE;
Arno Mecklenburg, Berlin, DE;
Rainer Schneider, Berlin, DE;
MSM Krystall GBR, Berlin, DE;
Abstract
An electromagnetic linear actuator has a frame (stator) and an armature each at least partially formed of soft magnetic material. The armature can be moved relative to the frame along a longitudinal axis, they form a gap therebetween in an open position and lie against each other in a closed position with the gap closed. A first armature coil is connected to the armature so that a force acting on the first armature coil is transferred to the armature. An excitation magnetic field is generated and guided at least partially by the frame and the armature and acts with a force on the first armature coil when current flows through the first armature coil, to close the gap. The frame, the armature, and the excitation magnetic field are configured so that a retaining force takes effect when the gap between the frame and the armature is closed.