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:
Sep. 04, 2018
Filed:
May. 19, 2016
Topray Mems Inc., Hsinchu, TW;
Chin-Sung Liu, Hsinchu, TW;
Hsiao-Ming Chien, Hsinchu, TW;
TOPRAY MEMS INC., Hsinchu, TW;
Abstract
A dual diamagnetic linear resonant actuator includes a magnetic induction element, a magnet set and a coil. The magnet set comprises four magnets. The N pole of first magnet, the N pole of second magnet, the S pole of third magnet and the S pole of fourth magnet press respectively against the first, second, third and fourth sides of the magnet induction element. The coil surrounds the magnetic induction element and the third and fourth magnets, and maintains a distance from the first end and the second end of the magnetic induction element, and from the N pole of the third and fourth magnets. As such, the first and second magnets compress magnetic field lines, and the third and fourth magnets strengthen the magnetic force, and guide the magnetic field lines towards the coil to accomplish concentration of magnetic field density and to avoid divergence of the magnetic field lines.