Invention Grant
- Patent Title: Electromagnetic device and electromagnetic relay equipped with electromagnetic device
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Application No.: US16570278Application Date: 2019-09-13
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Publication No.: US11227736B2Publication Date: 2022-01-18
- 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.
- 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, a fixed iron core, a movable iron core configured to reciprocate to separate from the fixed iron core by a predetermined gap when a current applied to the coil is stopped and move to the fixed iron core by an attractive force when the current is applied to the coil, and a permanent magnet. The permanent magnet is arranged so that the permanent magnet is opposed to the gap in a second direction perpendicular to a first direction and separated from the fixed iron core and the movable iron core with a space interposed therebetween. A direction of a second magnetic flux generated by the permanent magnet conforms to a direction of the first magnetic flux between opposed surfaces of the fixed iron core and the movable iron core.
Public/Granted literature
- US20200006025A1 ELECTROMAGNETIC DEVICE AND ELECTROMAGNETIC RELAY EQUIPPED WITH ELECTROMAGNETIC DEVICE Public/Granted day:2020-01-02
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