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:
Sep. 27, 1988
Filed:
Sep. 30, 1987
Bernhard Dietrich, Eichenau, DE;
Klockner-Moeller Elektrizitats-GmbH, Bonn, DE;
Abstract
The magnetic drive of an electromagnetic contactor comprises two spaced coils (10,11) having a coaxial bore in which an armature (14) is mounted for reciprocal movement between two end positions. A control slider (21) is disposed between the coils (10,11) with its two sides forming stops for the armature (14). When the armature (14) is changed over from one to the other end position, the slider is also changed over and limits, at the mid-position, the return movement of the armature (14) from the respective end position. In a contactor designed for tri-stable operation, undesired movement of the armature beyond the mid-position is avoided, which could otherwise lead to an inadvertent change-over of the armature (14) to the other end position. If the contactor is designed for monostable mid-position operation, oscillation of the armature (14) about the mid-position is prevented, so that this mid-position is stabilized.