US 6,632,126 B1Granted

Blade ring saw assembly

OwnerJesse G. Cogswellinventor

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Abstract

The present invention relates to a blade ring saw assembly in which the blade is a narrow, flat-sided metal ring having a radial width at least twice, and preferably four to six times, its thickness and has a diamond abrasive coating covering its outer peripheral edge and a portion of each sidewall of the ring. The blade ring is supported on a base from beneath the working surface, and projects upwardly to expose more than one-half of the blade ring for cutting of hard and thick workpieces, such as tile and stone, including both curved cutting and straight cutting. The blade ring is supported beneath the work surface by a plurality of roller guides above its radially inner edge and an endless drive belt having a run that extends beneath the blade ring so as to both support and drive the blade ring. Side-motion inhibiting roller guides are positioned immediately beneath the primary cutting area, to restrict lateral displacement of the blade ring during cutting, and similar roller guides optionally are provided on a stabilizer arm over the blade ring, also having a wiper serving to block coolant carried by the blade ring from a reservoir in the base.

Claims28

Dependent claims

A blade ring saw assembly, comprising:

a blade ring having an annular metal body with a narrow outer peripheral edge, substantially flat sidewalls and an inner edge defining an open central portion, and an abrasive coating on said peripheral edge and at least a portion of each of said flat sidewalls along said edge;
a base having a substantially flat and normally horizontal work surface for supporting a workpiece to be sawed and having an opening for said blade ring, said blade ring being disposed in said opening in a plane perpendicular to said work surface in a predetermined normally vertical working position, with approximately one-half of the blade ring above the surface and the remainder of the blade ring disposed beneath the work surface;
an endless drive belt mounted on said base below said work surface and having one run extending around a portion of the underside of the blade ring entirely beneath said work surface;
a plurality of pulleys supporting said drive belt and training said one run against the lower portion of said blade ring;
a plurality of roller guides rotatably supported on said base beneath said work surface and positioned to guide said blade ring in said working position and to cooperate with said drive belt in supporting the blade ring rotatably on said base;
means for driving said drive belt and thereby rotating said blade ring about a predetermined axis extending through said open central portion of said blade ring;
and a reservoir beneath said base for holding a quantity of coolant for engagement with a lower portion of the belt and thus with the blade ring.

4 more elements

A blade ring saw assembly capable of cutting a curve in a workpiece, comprising:

an annular blade ring having an annular body with a narrow outer peripheral edge, substantially flat sidewalls, and an inner edge defining an open central portion for permitting a portion of the workpiece to pass through the blade ring, and an abrasive coating on said outer peripheral edge and at least a portion of each of said sidewalls;
a base having a work surface adapted to be horizontally positioned for supporting a workpiece to be sawed, and having an opening for said blade ring, said blade ring being disposed in said opening with substantial portions of the blade ring and said open central portion disposed above the work surface in a predetermined working position and with the remainder of the blade ring disposed beneath the work surface;
guide means disposed both above and below the portion of the blade ring beneath the work surface to support the blade ring in the working position while permitting it to rotate about a predetermined axis relative to the base;
and means for driving the blade ring about said axis for cutting of the workpiece, whereby the workpiece can be turned during cutting to pass a portion of the workpiece through said open central portion to cut a curve in the workpiece.

1 more element

Dependencies are inferred from the claim text.