The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 27, 2015
Filed:
Dec. 13, 2010
Charles R. Wald, Oakdale, MN (US);
Shigeaki Dohgoshi, Machida, JP;
Charles J. Studiner, Iv, Cottage Grove, MN (US);
Jeffrey R. Janssen, Woodbury, MN (US);
Michael J. Annen, Hudson, WI (US);
Paul D. Graham, Woodbury, MN (US);
Charles R. Wald, Oakdale, MN (US);
Shigeaki Dohgoshi, Machida, JP;
Charles J. Studiner, IV, Cottage Grove, MN (US);
Jeffrey R. Janssen, Woodbury, MN (US);
Michael J. Annen, Hudson, WI (US);
Paul D. Graham, Woodbury, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
Provided are abrasive articles having a plurality of elongated channels extending across its working surface and intersecting with each other. These channels provide hinge points that enhance flexibility of the article along two or more directions. Optionally, the abrasive article includes a flexible attachment layer, along with apertures that penetrate through the attachment layer located at the intersection points of the channels. The enhanced flexibility allows the abrasive article to easily access recessed areas of the workpiece and facilitates applying even pressure across convex and concave surfaces. The channels assist in segregating dust particles from the abrading operation, and the optional apertures can be advantageously connected to a vacuum source for evacuation of the dust particles from the channels.