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    REPOSITIONABLE ABRASIVE DISC MOUNTING ASSEMBLY AND METHOD OF USING THE SAME
    1.
    发明申请
    REPOSITIONABLE ABRASIVE DISC MOUNTING ASSEMBLY AND METHOD OF USING THE SAME 审中-公开

    公开(公告)号：WO2021124036A1

    公开(公告)日：2021-06-24

    申请号：PCT/IB2020/061785

    申请日：2020-12-10

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： ECKEL, Joseph B. ,  NELSON, Thomas J. ,  SALMON, Fay T. ,  BUCKLEY, David T. ,  ARTHUR, Cory M. ,  GHADERI, Alireza ,  TRIANA, Dominic J.

    IPC: B24D9/08 ,  B24B45/00 ,  B24B45/006 ,  B24D9/085

    Abstract: A repositionable abrasive disc mounting assembly comprises a backup pad and a clamp assembly. The backup pad has a rotational axis of use and a major surface with projections extending outwardly therefrom. The backup pad further comprises an inwardly facing centrally disposed first fastening member, and also an outwardly facing centrally disposed second fastening member. The clamp assembly comprises inner and outer clamp members for securing an abrasive disc. The inner clamp member comprises an inwardly facing centrally disposed third fastening member adapted to repositionably engage the second fastening member in a discrete number of rotational orientations. The inner clamp member further comprises an outwardly facing centrally disposed fourth fastening member. The outer clamp member comprises an inwardly facing centrally disposed fifth fastening member adapted to securely engage the fourth fastening member. A method of abrading a workpiece using the repositionable abrasive disc is also disclosed.

    CURVATURE LIMITING FILM
    6.
    发明申请
    CURVATURE LIMITING FILM 审中-公开

    公开(公告)号：WO2019018253A1

    公开(公告)日：2019-01-24

    申请号：PCT/US2018/042212

    申请日：2018-07-16

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： COSGROVE, Dylan T. ,  SALMON, Fay T. ,  GORMAN, Michael R. ,  NIEMI, Scott M. ,  BEANE, Alex P. ,  JUSUF, Vincent ,  CORRIGAN, Thomas R.

    IPC: G09F9/30 ,  B32B3/06 ,  H01L51/00

    Abstract: Various apparatuses are disclosed including those that have curvature arresting properties. According to one example, the apparatus can optionally include a flexible first film, a second film and a first plurality of features. The first plurality of features can be disposed between the first film and the second film At least some of the first plurality of features are spaced apart from one another by a gap when the first film is not subject to an applied bending force or is subject to the applied bending force below a predetermined magnitude in one or both of the transverse direction and the longitudinal direction, and at least some of the first plurality of features contact one another to arrest a curvature of the first film when the applied bending force is at or above the predetermined magnitude.

    REPOSITIONABLE ABRASIVE DISC MOUNTING ASSEMBLY AND METHOD OF USING THE SAME
    7.
    发明申请
    REPOSITIONABLE ABRASIVE DISC MOUNTING ASSEMBLY AND METHOD OF USING THE SAME 审中-公开

    公开(公告)号：WO2022013670A1

    公开(公告)日：2022-01-20

    申请号：PCT/IB2021/055925

    申请日：2021-07-01

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： ECKEL, Joseph B. ,  SPRING, Erin D. ,  NELSON, Thomas J. ,  SALMON, Fay T. ,  TRIANA, Dominic J. ,  O'HARE, Jonathan J. ,  CORRIGAN, Thomas R.J. ,  BUCKLEY, David T. ,  ARTHUR, Cory M. ,  GHADERI, Alireza

    IPC: B24D9/08

    Abstract: A method for repositioning an abrasive disc within a repositionable abrasive disc mounting assembly is presented. The method includes mounting the abrasive disc to a repositionable abrasive disc mounting assembly in a first position. The mounting disc assembly includes the abrasive disc coupled to the back-up pad assembly such that the abrasive disc is in contact with a pressure feature of the back-up pad assembly, a drive shaft of a grinding tool, and a fastener that maintains the position of the abrasive disc and the back-up pad coupled to the drive shaft. The method also includes conducting an abrasive operation by activating the grinding tool. The method also includes re-positioning the abrasive disc, with respect to the repositionable abrasive disc mounting assembly, in a second position. The first position includes the abrasive disc in a first position relative to the pressure feature. The second position includes the abrasive disc in a second position relative to the pressure feature assembly. Re-positioning includes an adjustment between the first and second position while the abrasive disc is still positioned on the drive shaft between the fastener and the back-up pad assembly.

    SHAPED ABRASIVE PARTICLES WITH CONCAVE VOID WITHIN ONE OF THE PLURALITY OF EDGES
    8.
    发明申请
    SHAPED ABRASIVE PARTICLES WITH CONCAVE VOID WITHIN ONE OF THE PLURALITY OF EDGES 审中-公开

    公开(公告)号：WO2021079331A1

    公开(公告)日：2021-04-29

    申请号：PCT/IB2020/059971

    申请日：2020-10-23

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： ECKEL, Joseph B. ,  SALMON, Fay T. ,  NIENABER, Aaron K. ,  NELSON, Thomas J. ,  ARTHUR, Cory M. ,  GHADERI, Alireza ,  JESME, Ronald D. ,  BUCKLEY, David T.

    IPC: B24D11/00 ,  C09K3/14

    Abstract: A shaped abrasive particle is presented. The shaped abrasive particle has a first and second surface. The first and second surfaces are substantially parallel to each other and separated by a thickness. Each of the first and second surfaces have a surface profile, which includes a plurality of corners and a plurality of edges connecting the plurality of corners. The shaped abrasive particle also includes a recess included wholly within one of the plurality of edges, wherein the recess is a concave void extending into the surface profile. The shaped abrasive particle also includes a magnetically responsive coating. The magnetically responsive coating causes the shaped abrasive particle to be responsive to a magnetic field. The shaped abrasive particle, when exposed to the magnetic field, experiences a net torque that causes the shaped abrasive particle to orient with respect to the magnetic field such that each of the first and second surfaces are substantially perpendicular to a backing.

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