# US 10,307,890 B2 · Abrasive article and method of making the same

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- Number: US 10,307,890 B2
- Document ID: US10307890B2
- Status: Granted
- Kind: B2
- Application number: 15/834,946
- Filed: 2017-12-07
- Published: 2018-04-05
- Granted: 2019-06-04
- Earliest claimed: 2006-02-28
- Assignees: 3M Innovative Properties Company
- Applicants: 3M Innovative Properties Company
- Inventors: John Telischak, Jr.; Wesley A. Raider; Daryl D. Johnson; Edward L. Manor; Paul D. Streeter; Dean S. Holmes
- Web page: https://patentgrep.com/patent/US10307890B2

## CPC

- B24D 13/142: {Wheels of special form}
- B24B 23/02: with rotating grinding tools; Accessories therefor
- B24B 45/00: Means for securing grinding wheels on rotary arbors (suppression of vibrations in systems F16F15/00; testing static or dynamic balancing of machines G01M1/00)
- B24B 45/006: {Quick mount and release means for disc-like wheels, e.g. on power tools}
- B24D 7/16: Bushings; Mountings
- B24D 13/20: Mountings for the wheels
- Y10T 29/49826: Assembling or joining
- B24D: TOOLS FOR GRINDING, BUFFING OR SHARPENING (abrading-bodies specially designed for tumbling apparatus, e.g. abrading-balls B24B31/14; honing tools B24B33/08; lapping tools B24B37/11)
- B24B: MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING (grinding of gear teeth B23F, of screw-threads B23G1/36; by electro-erosion B23H; abrasive or related blasting B24C; tools for grinding, buffing or sharpening B24D; polishing compositions C09G1/00; abrasives C09K3/14; electrolytic etching or polishing C25F3/00; grinding arrangements for use on assembled railway tracks E01B31/17); DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

An abrasive article and method of making same wherein the abrasive article comprises a mounting assembly and an abrasive attachment assembly wherein the first interlock member of the mounting assembly and the second interlock member of the abrasive attachment assembly are configured to align the central axis of the abrasive attachment assembly and the central axis of the mounting assembly, and the first interlock member releasably engages the second interlock member. The abrasive article is adapted to clean a work surface area around studs using a rotary tool, including, for example, a drills or die grinder.

## Claims

### Claim 1

An abrasive attachment assembly comprising:
an abrasive layer attachment interface;
an interlock member comprising a threaded portion proximate the abrasive layer attachment interface and a non-threaded portion extending from the threaded portion; and
an abrasive layer affixed to the abrasive layer attachment interface opposite the interlock member;
wherein the abrasive layer comprises a nonwoven abrasive material, and further wherein the abrasive layer attachment interface comprises a friction-weld;
a channel extending along a central axis through the abrasive layer, the abrasive layer attachment interface, and the interlock member such that, in operation, a protrusion on a work piece is accommodated by the channel.

### Claim 2 (depends on 1)

The abrasive article of claim 1, wherein the abrasive layer comprises a lofty web of continuous three-dimensionally undulated inter-engaged autogenously bonded filaments.

### Claim 3 (depends on 1)

The abrasive article of claim 1, wherein the non-threaded portion of the interlock member comprises a diameter smaller than a diameter of the threaded portion of the interlock member.

### Claim 4

An abrasive article assembly comprising a disc-shaped nonwoven abrasive layer, an interlock member, and an attachment interface arranged between the abrasive layer and the interlock member securing the abrasive layer with the interlock member, wherein the attachment interface comprises a spin-weld interface; and wherein a channel extends along a central axis through the abrasive layer, the attachment interface, and the interlock member such that, in operation, a protrusion on a work piece is accommodated by the channel.

### Claim 5

A method of forming an abrasive article, comprising the steps of:
providing nonwoven abrasive material;
providing a thermoplastic fastener;
movably contacting the nonwoven abrasive material and thermoplastic fastener;
maintaining moving contact between the nonwoven abrasive material under sufficient pressure to cause the nonwoven abrasive material and the thermoplastic fastener to become melt bonded together, and
stopping the moving contact between the nonwoven abrasive material and the thermoplastic fastener;
wherein forming the abrasive article comprises aligning the abrasive layer and the thermoplastic fastener along a central axis such that a channel extends along the central axis through the abrasive layer and the thermoplastic fastener.

### Claim 6 (depends on 5)

A method of forming an abrasive article as defined in claim 5, wherein the nonwoven abrasive material is provided in the form of a disc, and further wherein the abrasive material and thermoplastic fastener are movably contacted by rotating at least one of the abrasive material and the thermoplastic fastener.