Ceramic shaped abrasive particles, methods of making the same, and abrasive articles containing the same

US9573250B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9573250-B2
Application numberUS-201113581844-A
CountryUS
Kind codeB2
Filing dateApr 20, 2011
Priority dateApr 27, 2010
Publication dateFeb 21, 2017
Grant dateFeb 21, 2017

How to read this patent

A practical reading order for non-experts. Skip the full description unless you need deep technical detail.

  1. Title

    What the patent document calls the invention.

  2. Abstract

    A short plain-language summary of the technical disclosure.

  3. Assignees and inventors

    Who owns or filed the patent and who is credited as inventor.

  4. Key dates

    Filing, priority, publication, and grant dates set the timeline.

  5. First independent claim

    The legal scope of protection — read this for what is actually claimed.

  6. CPC / IPC classifications

    Technology tags used to group this patent with similar filings.

  7. Citations and related patents

    Prior art links and similar publications in this corpus.

Abstract

Official abstract text for this publication.

Ceramic shaped abrasive particles have four major sides joined by six common edges. Each one of the four major sides contacts three other of the four major sides. The six common edges have substantially the same length. Methods of making the ceramic shaped particle are disclosed. The ceramic shaped abrasive particles are useful for abrading a surface of a workpiece. An abrasive article includes the ceramic shaped abrasive particles retained in a binder.

First claim

Opening claim text (preview).

What is claimed is: 1. An abrasive article comprising ceramic shaped abrasive particles retained in a binder, wherein the ceramic shaped abrasive particles have four major sides joined by six common edges, wherein each one of the four major sides contacts three other of the four major sides, wherein all of the four major sides are concave, and wherein the six common edges have substantially the same length, and wherein the abrasive article comprises a bonded abrasive wheel. 2. The abrasive article of claim 1 , wherein the ceramic shaped abrasive particles comprise sol-gel derived alumina. 3. The abrasive article of claim 1 , wherein ceramic shaped abrasive particles comprise alpha alumina. 4. The abrasive article of claim 1 , wherein the ceramic shaped abrasive particles have a coating of inorganic particles thereon. 5. The abrasive article of claim 1 , wherein the binder comprises an organic binder. 6. The abrasive article of claim 1 , wherein the binder comprises a phenolic resin. 7. The abrasive article of claim 1 , wherein the binder comprises a vitreous binder. 8. The abrasive article of claim 1 , wherein the grinding wheel comprises a depressed-center grinding wheel. 9. The abrasive article of claim 1 , wherein the bonded abrasive wheel comprises a cut off wheel. 10. The abrasive article of claim 1 , further comprising reinforcing material disposed on opposed major surfaces of the bonded abrasive wheel. 11. The abrasive article of claim 1 , further comprising reinforcing material disposed on only one major surface of the bonded abrasive wheel. 12. The abrasive article of claim 1 , further comprising crushed abrasive particles conforming to an abrasives industry specified nominal grade. 13. A method of abrading a workpiece, the method comprising: frictionally contacting at least a portion of ceramic shaped abrasive particles of an abrasive article with a surface of a workpiece, wherein the abrasive article comprises the ceramic shaped abrasive particles retained in a binder, wherein the ceramic shaped abrasive particles have four major sides joined by six common edges, wherein each one of the four major sides contacts three other of the four major sides, wherein all of the four major sides are concave, and wherein the six common edges have substantially the same length, and wherein the abrasive article comprises a bonded abrasive wheel; and moving at least one of the workpiece or the abrasive article to abrade at least a portion of the surface of the workpiece.

Assignees

Inventors

Classifications

  • with reinforcing means · CPC title

  • Abrasive particles per se (preparation of diamond C01B32/25) · CPC title

  • B24D5/12Primary

    Cut-off wheels · CPC title

  • with reinforcing means · CPC title

  • using moulds or presses · CPC title

Patent family

Related publications grouped by family.

External sources

Frequently asked questions

Answers are generated from the same data shown on this page.

What does patent US9573250B2 cover?
Ceramic shaped abrasive particles have four major sides joined by six common edges. Each one of the four major sides contacts three other of the four major sides. The six common edges have substantially the same length. Methods of making the ceramic shaped particle are disclosed. The ceramic shaped abrasive particles are useful for abrading a surface of a workpiece. An abrasive article includes…
Who is the assignee on this patent?
Schwabel Mark G, Givot Maiken, Adefris Negus B, and 1 more
What technology area does this patent fall under?
Primary CPC classification B24D5/12. Mapped technology areas include Operations & Transport.
When was this patent published?
Publication date Tue Feb 21 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).