Method for removing trip hazards in concrete sidewalks
DCFirst Claim
1. A method for cutting a chamfer on an edge of a concrete slab, the method 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 a planar cut at a desired angle beginning a distance from said edge, the planar cut creating a cantilevered ledge above the planar cut;
fracturing and removing at least a portion of the cantilevered ledge from the slab whenever an edge of the cantilevered ledge is proximate the hub; and
continuing the planar cut until the cantilevered ledge is severed from the slab.
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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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Citations
20 Claims
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1. A method for cutting a chamfer on an edge of a concrete slab, the method comprising the steps of:
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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 a planar cut at a desired angle beginning a distance from said edge, the planar cut creating a cantilevered ledge above the planar cut; fracturing and removing at least a portion of the cantilevered ledge from the slab whenever an edge of the cantilevered ledge is proximate the hub; and continuing the planar cut until the cantilevered ledge is severed from the slab. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for cutting a chamfer along an upper abutting edge of a first of two abutting concrete slabs, said abutting edge being elevated above an upper surface of said second concrete slab, the method comprising the steps of:
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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 a planar cut at a desired angle beginning a distance from said upper abutting edge, said desired angle being selected so that a projection of a bottom surface of the planar cut intersects an upper abutting edge of the second concrete slab, the planar cut creating a cantilevered ledge above the planar cut; fracturing and removing at least a portion of the cantilevered ledge from the slab whenever an edge of the cantilevered ledge is proximate the hub; and continuing the planar cut until the cantilevered ledge is severed from the slab. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification