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:
Aug. 05, 2014
Filed:
Apr. 03, 2012
Yasuhiro Naka, Kounosu, JP;
Kouetsu Takaya, Kounosu, JP;
Kenji Suzuki, Kounosu, JP;
Hiroyuki Tachikawa, Yokohama, JP;
Yasuhiro Naka, Kounosu, JP;
Kouetsu Takaya, Kounosu, JP;
Kenji Suzuki, Kounosu, JP;
Hiroyuki Tachikawa, Yokohama, JP;
Fuji Electric Co., Ltd., Kawasaki-shi, JP;
Fuji Electric FA Components & Systems Co., Ltd., Tokyo, JP;
Abstract
An electromagnetic contactor has a pair of fixed contacts; a movable contact disposed to be capable of contacting with and separating from the pair of fixed contacts; and an electromagnetic unit driving the movable contact. The electromagnetic unit has a magnetic yoke having an open upper part; an upper magnetic yoke cross-linked in the open upper part of the magnetic yoke; a spool having a central opening in which an exciting coil is wound around the spool; a movable plunger movably disposed in the central opening of the spool in an axial direction and having a tip end protruding, the movable plunger urged by a return spring; and an auxiliary yoke forming a magnetic path between the movable plunger and the U-shaped magnetic yoke when the movable plunger is in an open position. The movable plunger is coupled to the movable contact through a coupling shaft.