Abstract: A surgical device (10) for removing unwanted tissue is disclosed. The surgical device (10) includes a housing (12) having a cavity (14) with a lateral opening. The ends of the cavity (14) are enclosed by an endplate (20) and at a distal end by a motor mount (24). The motor mount (24) provides for the mounting of a pneumatic motor (42). The pneumatic motor (42) drives a cylindrical wire brush (46). The cylindrical wire brush (46) includes a plurality of wire bristles (50) extending radially from a central shaft (48). The pneumatic motor (42) rotatably drives the central shaft (48) at a first end (52) and a high speed bearing (56) mounted in the end plate (20) supports the central shaft (48) at a second end (54). The cylindrical wire brush (46) extends out of the lateral opening (16) in the cavity (14) a predetermined dimension (X). The predetermined dimension may be adjusted with an adjustment mechanism (58) provided to vary the depth of tissue removal.

Abstract: Arrangements are taught for decoratively engraving a surface, such as hardened concrete or stone, particularly by engraving stencil-defined swaths into the surface with a tool of the type commonly called a needle scaler. The arrangements include methods of covering portions of the surface with a stencil made of material capable of withstanding a chisel blow, and then engraving exposed swaths by repeated chisel blows from one or more chisels having a restricted stroke. In some cases non-contiguous portions of a stencil are interconnected by bridge-line connectors selected to allow free access to the entire swath by a needle scaler or other chisel driving apparatus. In other cases a space-frame is placed atop a stencil and used to support discrete non-contiguous island portions of the stencil.

Abstract: A concrete grooving apparatus small and light enough to be manually propelled by an operator cuts decorative grooved patterns into a pavement surface. The apparatus includes a linear tracking mechanism guiding a cutter along a plurality of lines intersecting at a variety of preselected angles, and thus allows an operator to cut herringbone, diamond, and other polygonal patterns. The apparatus also includes an arcuate tracking mechanism for cutting a groove with a radius of curvature smaller than the length of the cart used to carry the cutting wheel. An out-of-round contour-following wheel is used in combination with a cutting wheel having a V-shaped or semi-circular profile to engrave an undulating groove into a paved surface, which produces a wavy-edged or cobblestone-like pattern.

Abstract: An apparatus for cutting a decorative grooved pattern into the surface of hardened concrete, pavement or the like. The patterns are comprised of spaced concentric circles or arcuate segments or spaced linear grooves with or without selectively positioned radial or straight groove segments therebetween and variations and combinations of each. The apparatus includes either a transversely oriented frame-mounted concrete cutting means and/or a longitudinally oriented frame-mounted concrete cutting means. An arcuate tracking arrangement and a linear tracking arrangement are also provided, each connectable to the ground or concrete working surface and, at one end thereof, to the frame. The frame may be manually or drive wheel-propelled as guided by either of the tracking arrangements to produce the above-described decorative grooved patterns in the concrete surface.