A rotary wire brush, such as a wheel brush, e.g., double-stringer or dually brush, cup brush, bevel brush, or knotted end brush, composed of knotted brush wire tufts of multistrand construction each having at least a plurality of brush wire strands, preferably at least a plurality of pairs of, i.e., at least three, strands each formed of at least a plurality, preferably at least a plurality of pairs of, i.e., at least three, wires. The wires forming strands are twisted, braided, or twisted and braided, and the strands that form tufts are twisted, braided, or twisted and braided. A preferred brush employs a center disc, e.g., hub, with radially offset tuft anchor holes, which can have different sizes, from which twist knot tufts, which also can have different sizes, can outwardly extend from the disc different distances by being configured with an offset trim preferably having different trim lengths

The present wire brush is adapted to clean a grill grate and basically comprises and outer housing, a grate-engaging flange, a flexible bristle-receiving retainer and a plurality of wire bristles. The outer housing has upper and lower portions. The grate-engaging flange extends from the lower portion of the housing in generally perpendicular relation thereto. The flexible retainer is disposed in the upper portion of the housing. The bristles have upper portions embedded in the retainer and grate-engaging free ends that extend no more than one-half inch beyond the grate-engaging flange.

A method for breaking in the surface condition of an asphalt test track for vehicles, comprising: modifying the condition of the surface of the test track with a treatment machine; placement on the treatment machine (1) of at least one rotary abrasive disc (4); and moving the treatment machine on the test track so as to reduce the friction coefficient to achieve a friction level corresponding to that of a broken-in track.

A surface of a workpiece is treated by rotating about an axis a brush having a multiplicity of radially projecting bristles with tips engaging a surface of a workpiece to be treated while positioning a stop nonrotatable with the brush in engagement with the bristles radially inward of the stop so as to rearwardly deflect the bristles prior to contact with the workpiece and thereby store kinetic energy in the bristles so that as the bristles pass the stop the kinetic energy is released and the bristles spring elastically forward and percussively strike the workpiece surface. A roughness of the workpiece surface is determined and the stop is positioned radially relative to the axis or the brush is positioned relative to the workpiece at a spacing in accordance with the determined roughness.

A rotary wire brush, such as a wheel brush, e.g., double-stringer or dually brush, cup brush, bevel brush, or knotted end brush, composed of knotted brush wire tufts of multistrand construction each having at least a plurality of brush wire strands, preferably at least a plurality of pairs of, i.e., at least three, strands each formed of at least a plurality, preferably at least a plurality of pairs of, i.e., at least three, wires. The wires forming strands are twisted, braided, or twisted and braided, and the strands that form tufts are twisted, braided, or twisted and braided. A preferred brush employs a center disc, e.g., hub, with radially offset tuft anchor holes, which can have different sizes, from which twist knot tufts, which also can have different sizes, can outwardly extend from the disc different distances by being configured with an offset trim preferably having different trim lengths

A double-stringer rotary brush assembly formed of a pair of brush wire mounting hubs having sets of alternating radially staggered radially innermost and outermost brush wire tuft mounting holes having different hole sizes with brush wire tufts extending radially outwardly therefrom having at least one of (a) different lengths, (b) an offset trim, and/or (c) differently sized knots anchoring the tufts thereto. One hub can be angularly offset relative to the other hub angularly offsetting the holes of one hub relative to the other hub from being concentric. The tufts extending from one of the radially innermost and outermost holes are stiffer than the tufts extending from the other one of the radially innermost and outermost holes imparting to the brush assembly tufts having different surface finishing and abrasive removal characteristics.

An exterior material may be configured to form an exterior of a home appliance, the exterior material includes a base material having a hierarchical circular structure pattern on the surface. The hierarchical circular structure pattern may include a plurality of circular structures having diameters different from each other, and a pattern density may be, in percentage of area of the surface, about 20 to 90%.

A cleaning tool is disclosed for cleaning an object (e.g., a threaded fastener) and retaining debris from cleaning the object. The cleaning tool can comprise a housing operable to be rotated by hand or by a hand tool, and a cleaning chamber formed through the housing. A plurality of retaining cavities are formed through the housing and in fluid communication with the cleaning chamber, and a plurality of cleaning elements (e.g., shafts having bristles) are supported by respective retaining cavities, such that a portion of the cleaning elements (e.g., wire bristles) extend into the cleaning chamber for cleaning the object upon rotation of the housing relative to the object. Elastic elements can be supported by the housing for biasing the cleaning elements to accommodate cleaning different sizes of objects. Associated systems and methods are provided.

The Ergonomic Handle Scraper includes an ergonomic handle device that may be adapted to perform a wide variety of tasks such as scrubbing, scraping, scooping, cutting, brushing, painting, sanding, grating, shaving, etc. The device may be produced in a wide variety of shapes and sizes and may be constructed from a wide variety of materials and manufacturing processes. The Ergonomic Handle Scraper provides a user with a compact, ergonomic handle which may be used in conjunction with other adjoining and complementary shapes, materials, surfaces, textures or tools. More specifically, the ergonomic handle is the basic component that enables other components to be combined with or extended from the handle.

The present wire brush is adapted to clean a grill grate and basically comprises and outer housing, a grate-engaging flange, a flexible bristle-receiving retainer and a plurality of wire bristles. The outer housing has upper and lower portions. The grate-engaging flange extends from the lower portion of the housing in generally perpendicular relation thereto. The flexible retainer is disposed in the upper portion of the housing. The bristles have upper portions embedded in the retainer and grate-engaging free ends that extend no more than one-half inch beyond the grate-engaging flange.