公开(公告)号：US20190164675A1

公开(公告)日：2019-05-30

申请号：US15824698

申请日：2017-11-28

Applicant: Microsoft Technology Licensing, LLC

Inventor： Nishant SRINIVASAN ,  Daniel Clark PARK ,  Karsten AAGAARD ,  Colin Tiyani ANDERSON ,  Michael Robert SCHWEERS ,  Benoit Guillaume Henri ROUGER ,  Anthony Christian REED

IPC: H01F7/02 ,  E05B47/00 ,  E05C19/16

CPC classification number: H01F7/0263 ,  A44D2203/00 ,  E05B47/0038 ,  E05C19/16 ,  F16B2001/0035 ,  G06F1/1679 ,  H01F7/04

Abstract: An apparatus having a fast drop-off in attraction force between magnets is provided. The apparatus includes a first magnet array having a plurality of magnets with different magnetic field orientations fixedly positioned in a first housing. The apparatus also includes an adjacent magnet assembly relative to the first magnet array and provided in a second housing that includes second and third magnet arrays, each having a plurality of magnets with different magnetic field orientations. The apparatus includes an activation mechanism configured to move the adjacent magnet assembly from at least a first relative position to a second relative position. The adjacent magnet assembly in the second relative position has a second magnetic attraction force with the first magnet array that is substantially reduced as compared to a first magnetic attraction force with the first magnet array in the first relative position. The magnet arrays may define a magnetic fastener controlling opening and/or closing of portions of a device.