DISPOSABLE FINISHING ARTICLE HAVING AN INTEGRAL MOUNTING HUB INCLUDING AN IMPROVED METAL PRESSURE CAP

摘要

A disposable finishing article for mounting on a rotatable threaded spindle of a power tool. The finishing article contains a retaining nut on one side and a backing member on the other side non-removably secured together on the finishing article without the aid of adhesives in such a manner that the finishing article is placed in compression when it is operably secured upon the spindle of the power tool under operative loads. The backing member includes an inner annular portion defining a platform surrounding the nut and having one surface resting upon the other side of the finishing article. The nut and backing member are secured together by upsetting one end of the nut causing it to protrude outwardly over the outer surface of the flange. A metal pressure cap is secured to the backing member for engaging a shoulder formed on the spindle of the power tool during operation of the finishing article. The metal pressure cap includes a base and a top with the base having an outwardly directed flange which seats upon the platform. The backing member is upset to secure the pressure cap and backing member together.