Patent ID: 8387261

Claim:
A root resurfacing attachment for a landscaping edger having a rotating threaded spindle, said root resurfacing attachment comprising: a rotating hub comprising an axial core with an inboard end and an opposite outboard end; an inboard flange at the inboard end, said inboard flange having a first outer diameter; a plurality of evenly spaced ribs extending radially from the axial core, said ribs defining a second outer diameter; a central bushing channel extending from the inboard flange into the axial core, said central bushing channel having a noncircular cross section; and a central flange channel extending from the outboard end of the axial core to the central bushing channel; and a removable outboard flange assembly attachable to the outboard end of the rotating hub, said outboard flange assembly having a third outer diameter; and an outboard flange attachment configured to attach the removable outboard flange assembly to the outboard end of the rotating hub; and an inboard spindle bushing comprising a noncircular cross section sleeve configured to fit snugly in the central bushing channel, and a central threaded channel extending axially through the inboard spindle bushing and being threaded to threadedly engage the rotating threaded spindle of the landscaping edger; and a plurality of parallel spaced-apart endless cutting chain loops, each cutting chain loop having an inner periphery and inner diameter, an outer periphery and outer diameter, and comprising an endless loop of connected chainsaw chain links, including a plurality of cutting links, drive links, and tie straps, each cutting link including a cutting surface at the outer periphery, each drive link including a rib engaging fin at the inner periphery; and a plurality of spaced-apart spacer rings, each spacer ring having an inner periphery and inner diameter, an outer periphery and outer diameter, and a width, and each spacer ring being disposed between adjacent cutting chain loops, the outer diameter of the spacer rings being less than the outer diameter of the cutting chain loops, and the inner diameter of the spacer rings allowing the spacer rings to slide onto the rotating hub.