Patent ID: 7484736
Filing Date: 2009-02-03
Classification: A61C,B24B,B24D,Y10T

Abstract:
1. A rotary tool accessory, comprising: a body defining an axis of rotation and having a work piece contacting surface and a drive portion, said body having defined therein a body opening including a first opening portion and a second opening portion; and an insert located within at least said second opening portion, wherein said first opening portion is contained within a space during rotation of said body about said axis, wherein both said drive portion and said second opening portion are advanced through a path during rotation of said body about said axis, said path being located outside of said space, wherein said body includes an inner wall structure that defines said body opening, wherein said insert includes (i) a lip portion positioned within said body opening and adjacent to said inner wall structure, and (ii) a base portion connected to said lip portion and extending away from said body opening, wherein said body further defines a recess that surrounds said body opening, and wherein said base portion is positioned within said recess.