公开(公告)号：US12208492B2

公开(公告)日：2025-01-28

申请号：US17784869

申请日：2020-12-10

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Joseph B. Eckel ,  Thomas J. Nelson ,  Fay T. Salmon ,  David T. Buckley ,  Cory M. Arthur ,  Alireza Ghaderi ,  Dominic J. Triana

IPC: B24D9/08 ,  B24B45/00

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.

公开(公告)号：US20230008040A1

公开(公告)日：2023-01-12

申请号：US17784869

申请日：2020-12-10

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Joseph B. Eckel ,  Thomas J. Nelson ,  Fay T. Salmon ,  David T. Buckley ,  Cory M. Arthur ,  Alireza Ghaderi ,  Dominic J. Triana

IPC: B24D9/08

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.

公开(公告)号：US20230339073A1

公开(公告)日：2023-10-26

申请号：US18005285

申请日：2021-07-01

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Joseph B. Eckel ,  Erin D. Spring ,  Thomas J. Nelson ,  Fay T. Salmon ,  Dominic J. Triana ,  Jonathan J. O'Hare ,  Thomas R.J. Corrigan ,  David T. Buckley ,  Cory M. Arthur ,  Alireza Ghaderi

IPC: B24D9/08

CPC classification number: B24D9/085

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.

公开(公告)号：US20230211470A1

公开(公告)日：2023-07-06

申请号：US17996723

申请日：2021-04-15

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Joseph B. Eckel ,  Thomas J. Nelson ,  Fay T. Salmon ,  David T. Buckley ,  Dominic J. Triana ,  Alireza Ghaderi ,  Aaron K. Nienaber ,  Ronald D. Jesme

IPC: B24D18/00 ,  B24D3/00 ,  B24D11/00 ,  C09K3/14

CPC classification number: B24D18/0009 ,  B24D3/00 ,  B24D11/001 ,  B24D18/0072 ,  C09K3/1418 ,  C09K3/1436

Abstract: A mold for making abrasive particles is presented. The mold includes a surface and a plurality of cavities extending downward from the surface. Each cavity includes a particle shape portion comprising a polygonal shape and a fracture portion coupled to the particle shape portion. The fracture portion is configured to break from the particle shape portion during a stress event, resulting in a fractured shape abrasive particle.