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. 17, 2002
Filed:
Oct. 29, 2001
Vacon Oyj, Vaasa, FI;
Abstract
The present invention relates to a switching device ( ) which is arranged to switch a load ( ) to a direct voltage circuit ( ). The switching device ( ) comprises a switching member ( ) consisting of at least three contacts ( ), a control member ( ) which controls the contacts ( ) of the switching member ( ) and has the positions open [ ] and closed [ ], and one or more spring members ( ) which are tensioned by the control member ( ) and control the contacts. The switching device is characterized in that the switching member ( ) of the switching device ( ) comprises a limiter arrangement which is arranged to limit closing of at least one contact ( ) when the control member ( ) is turned from the open [ ] position into the closed [ ] position, the limiter arrangement comprising a limiter ( ) and a toggle joint ( ) connected thereto and a solenoid ( ) arranged in the toggle joint, the toggle joint ( ) being arranged to be controlled by the solenoid ( ), as a result of which the toggle joint ( ) turns the limiter ( ) so that it releases the contact ( ) of the switching member ( ) whose closing has been prevented, allowing the contact to close.