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:
May. 19, 1998
Filed:
Oct. 23, 1995
Frank J Hettes, Greentown, PA (US);
Weiler Brush Company, Inc., Cresco, PA (US);
Abstract
A flap disc for use with a rotary surface finishing tool, the flap disc includes a backing plate which attaches to and is rotated by the finishing tool. The backing plate has a mounting flange on which a plurality of abrasive flaps are radially disposed. The abrasive flaps are each adhesively attached to the mounting flange and positioned so as to overlap an adjacent flap. Each abrasive flap has a finishing layer which comprises abrasive particles intermixed in a resin binder. Attached to the finishing layer is a substrate which includes a resin binder. In one embodiment of the invention, the substrate is made from fiber material onto which the abrasive particle/resin mixture is adhesively attached. Alternately, the substrate may comprise a non-woven fibrous material onto which the abrasive particle/resin mixture is adhesively bonded. The mounting flange may comprise a plurality of fiberglass plies intermixed in a resin matrix. Abrasive particles are, preferably, incorporated into the resin matrix so that if the abrasive flaps are completely torn away, the abrasive particles in the mounting flange will continue to sand the surface of the work piece.