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:
Mar. 28, 2000
Filed:
Jul. 30, 1998
Martin Pischinger, Aachen, DE;
Thomas Esch, Aachen, DE;
Abstract
A method of operating an electromagnetic actuator for actuating a setting member wherein the actuator includes at least one electromagnet supplied with current by a control device, and an armature that is operatively connected with the setting member to be actuated and which can be brought out of a first set position, counter to a force of a restoring spring, into a second set position, in which the armature is in contact with the pole face of the electromagnet, when the electromagnet is supplied with current. The change in the setting force of the restoring spring is detected, at least during part of the armature motion, and the respective position of the armature and/or its moving speed is or are derived from this. The derived value is used to check and/or influence the actuation of the electromagnet.