Patent ID: 8905822

Claim:
An angle grinder, comprising: a field case having a handle coupled to a first end thereof; a motor disposed within the field case and having a rotor extending axially therefrom; a gear case coupled to a second end of the field case opposite the handle and having a wheel spindle extending therefrom, wherein the wheel spindle is operatively coupled to the rotor by at least one gear; an upper flange disposed about the wheel spindle; a grinder wheel disposed on the wheel spindle for rotation therewith; and a lower flange disposed about the wheel spindle and opposite the upper flange, wherein the grinder wheel is disposed between the upper and lower flanges, and wherein the lower flange comprises: a body; an annular bore extending through the body and that threadingly receives the wheel spindle; and at least one aperture extending at least partially through the body and spaced from the annular bore, wherein the at least one aperture comprises a cross-sectional shape that is other than circular, wherein the at least one aperture is adapted to receive a tool that is sized and shaped to be inserted into the aperture in a substantially non-rotatable manner, and application of rotational force to the tool about the aperture causes the lower flange to rotate about the spindle.