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| Number | Title | Issue Date |
| 7402095 | Method for removing trip hazards in concrete sidewalks A method for cutting a chamfer on an edge of a concrete slab, the method comprising the steps of: making a generally planar cut, beginning a distance from the edge, with a generally circular, generally laminar concrete saw blade rotatably powered by a right-angle gr... | 07/22/2008 |
| 7210474 | Saw blade with cutting depth gauge Cutting tools are provided that include a circular core with a cutting means located on its periphery, a central bore to receive an arbor of a rotating power tool and one or more perforations extending through the central core. The perforations are disposed along a ... | 05/01/2007 |
| 7201644 | Apparatus for removing trip hazards in concrete sidewalks An apparatus for cutting a chamfer on an upper edge of a concrete slab includes a hub designed for installation on the threaded output spindle of an angle grinder, and a specially-modified diamond-grit-edged rotary blade which mounts on the hub. For a preferred embo... | 04/10/2007 |
| 7143760 | Method for removing trip hazards in concrete sidewalks 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 projectin... | 12/05/2006 |
| 7000606 | Method and apparatus for removing trip hazards in concrete sidewalks An apparatus for cutting a chamfer on an upper edge of a concrete slab includes a hub designed for installation on the threaded output spindle of an angle grinder, and a specially-modified diamond-grit-edged rotary blade which mounts on the hub. For a preferred embo... | 02/21/2006 |
| 6994081 | Apparatus for roughing the surfaces of casted concrete block A casted concrete block surface-roughing machine having an in-line conveyor displaceable over a stationary horizontal support surface for slidingly supporting a lower surface of concrete blocks displaced thereon by the conveyor. At least two pairs of spaced-apart ve... | 02/07/2006 |
| 6903304 | Process for dressing molded array package saw blade A process for reworking or dressing a saw blade used in wafer dicing and singulation of molded array integrated circuit packages, includes rotating the saw blade on a spindle and ablating an edge portion of the saw blade using a laser and thereby dressing the saw bl... | 06/07/2005 |
| 6827075 | Apparatus for burning stone An automated stone burning apparatus, which precisely adjusts the burning operation and improves the throughput. The apparatus consists of a torch assembly that is mounted in proximity to a stone slab lying upon a roller bed. The torch assembly is movable both trans... | 12/07/2004 |
| 6827074 | Method and apparatus for removing trip hazards in concrete sidewalks Apparatus for cutting a chamfer on an upper edge of a concrete slab includes a hub designed for installation on the threaded output spindle of an angle grinder, and a specially-modified diamond-grit-edged rotary blade which mounts on the hub. For a preferred embodim... | 12/07/2004 |
| 6422229 | Saw blade for cutting integrated circuit package boards A device for cutting integrated circuit package boards is disclosed. The device includes a circular saw blade. A plurality of slots are cut in the circumference of the circular saw blade, at least some of the plurality of slots having a depth of at least ... | 07/23/2002 |
| 6287181 | Universal polishing head A stone polishing head for use on a conventional automatic polishing machine which is simple, but has the weight and strength of a prior art polishing head for which the machine was designed. The polishing head is formed of a solid steel barrel having a c... | 09/11/2001 |
| 6092517 | Concrete surface trimming apparatus An apparatus which is rugged and simple to use, and which can finish shot-crete to an acceptable flatness and finish is disclosed. The efficient mechanical apparatus eliminates the need for skilled hand finishing of concrete or another slurry sprayed on a... | 07/25/2000 |
| 6080047 | Procedure for the surface treatment of petrous materials A process for surface treating the surface of petrous materials comprises applying friction to the surface to be treated by means of brush bristles which produce progressive erosion of the surface wherein the erosion is of greater depth in zones of lesser... | 06/27/2000 |
