Invention Grant
- Patent Title: Electromagnetic device and electromagnetic relay equipped with electromagnetic device
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Application No.: US15619885Application Date: 2017-06-12
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Publication No.: US10446350B2Publication Date: 2019-10-15
- Inventor: Satoshi Sakai , Katsuya Uruma
- Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- Applicant Address: JP Osaka
- Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- Current Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- Current Assignee Address: JP Osaka
- Agency: Greenblum & Bernstein, P.L.C.
- Priority: JP2016-120688 20160617; JP2016-254026 20161227
- Main IPC: H01H9/00
- IPC: H01H9/00 ; H01H50/20 ; H01H50/16 ; H01H50/36 ; H01H50/44 ; H01H51/22 ; H01H51/27

Abstract:
An electromagnetic device includes: a coil configured to generate a first magnetic flux; a fixed member, a movable member configured to reciprocate to separate from the fixed member by a predetermined gap when a current applied to the coil is stopped and move to the fixed member by an attractive force when the current is applied to the coil; and a permanent magnet configured to generate a second magnetic flux between the respective opposed surfaces of the fixed member and the movable member in the same direction as the first magnetic flux. The permanent magnet is attached to at least one of the fixed member and the movable member such that a magnetized surface of the permanent magnet is opposed and exposed to the opposed surface of the other one of the fixed member and the movable member.
Public/Granted literature
- US20170365432A1 ELECTROMAGNETIC DEVICE AND ELECTROMAGNETIC RELAY EQUIPPED WITH ELECTROMAGNETIC DEVICE Public/Granted day:2017-12-21
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