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. 30, 2019
Filed:
Jun. 12, 2015
Mitsubishi Electric Corporation, Chiyoda-ku, Tokyo, JP;
Shuichi Tanigaki, Tokyo, JP;
Tomohito Mori, Tokyo, JP;
MITSUBISHI ELECTRIC CORPORATION, Chiyoda-Ku, Tokyo, JP;
Abstract
An operating device for a power switchgear includes: an output lever coupled to a movable-contact of the switchgear; a torsion bar releasing an accumulated force when the switchgear is opened to rotate the lever in the counterclockwise direction and drive the movable-contact in an opening direction; an opening latch engaged with the lever to hold an accumulated force of the torsion bar; a cam rotating when the switchgear is closed, having contact with the lever to rotate the lever in the clockwise direction, and driving the movable-contact in a closing direction; another torsion bar releasing the accumulated force when the switchgear is closed to rotate the cam; and a closing latch which can be engaged with the cam to hold the accumulated force of the torsion bar. The cam includes opposed cam elements, a pin whose ends are rotatably supported by the elements, and a bolt fastening the elements.