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. 05, 1994
Filed:
Jan. 07, 1993
Christian Blanchard, Rueil Malmaison, FR;
Michel Lauraire, Courbevoie, FR;
Didier Vigouroux, Jouy-le-Moutier, FR;
Telemecanique, Rueil Malmaison, FR;
Abstract
A current switching device includes stationary contacts, and movable contacts which are movable between a position in which the movable contacts engage the stationary contacts and a position in which the movable contacts separate from the stationary contacts. The movable contacts are mounted on a movable contact holder. A magnetic locking element includes a permanent magnet and is pivotally mounted about a fixed axis. An actuation armature is connected to the contact holder and is movable to move the contact holder. The actuation armature is movable in proximity to the magnetic locking elements such that the actuation armature is locked to the magnetic locking element by magnetic attraction with the movable contacts engaging the stationary contacts. An opening armature is movable between a rest position and a position in proximity to the magnetic locking element, such that the opening armature is locked to the magnetic locking element by magnetic attraction. When the opening armature is in proximity to the magnetic locking element, the magnetic attraction between the actuation armature and the magnetic locking element is reduced such that the actuation armature is freed to permit the movable contacts to separate from the stationary contacts. A tripping device is sensitive to a current overload and causes the opening armature to move to the position in proximity to the magnetic locking element.