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:
Jan. 26, 2021
Filed:
Apr. 17, 2018
Mikuni Corporation, Tokyo, JP;
Toshiki Ogasawara, Takizawa, JP;
MIKUNI CORPORATION, Tokyo, JP;
Abstract
An electromagnetic actuator in which magnetic force from a permanent magnet causes a stator core and a first plunger to attract each other, and electromagnetic force generated by energizing an electromagnetic coil causes a mover to resist against the magnetic force from the permanent magnet to move in an axial direction separating from a front end portion of the stator core, wherein a ring member provided on the mover is inserted in the axial direction into a hole portion provided in a bottom wall member of a yoke, and an overlap size between the ring member and the bottom wall member is increased when the mover moves relative to the stator core in a separating direction, so that a magnetism transmission quantity from the permanent magnet passing through an overlap portion between the ring member and the bottom wall member is inhibited from being reduced.