Stone working – Slate surfacing
Reexamination Certificate
2006-12-05
2006-12-05
Wilson, Lee D. (Department: 3723)
Stone working
Slate surfacing
C451S548000, C451S028000, C451S041000, C451S353000
Reexamination Certificate
active
07143760
ABSTRACT:
A method for cutting a chamfer on an edge of a concrete slab, comprising the steps of: providing a generally circular, rotatable concrete saw blade that is coupled to a right-angle grinder motor with a blade-mounting hub having no blade attachment hardware projecting below a lower major surface of the blade; making an initial planar cut at a desired angle beginning a distance from the edge, thereby creating an initial cantilevered ledge above the initial cut; if the initial cantilevered ledge is not severed from the slab by a cutting action of the blade before the hub is proximate an edge of the initial cantilevered ledge, then fracturing and removing the initial cantilevered ledge from the slab; and making at least one subsequent planar cut continuous with the initial cut and any necessary fracturings and removals of subsequent cantilevered ledges until the chamfer is complete.
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Fox III Angus C.
Precision Concrete Cutting, Inc.
Wilson Lee D.
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