Abstract: A hand sanding block for use with an endless abrasive belt of the type normally used with power sanders. The block has a body and a slidable nose which is biased outwardly. A pin limits the outward travel of the nose relative to the body. A detent is provided so the nose may be temporarily secured in a retracted position for ease of loading and unloading sanding belts.

Abstract: An abrasive holder has a moulded base for a pad of a closed cell foam or cork. The support has a handle for finger and thumb operation. The pad is glued to the base and supports a peel-off piece of abrasive cloth or paper having an adhesive face. The holder is for fine work or working in contact with glass. The pad prevents scratching while permitting surface preparation up to the glass border. Acrylic emulsion adhesives and foam densities of 30-200 kg.backslash.m.sup.3 are disclosed.

Abstract: A sander device is provided for sanding an outside corner of a structure, such as a building wall or a furniture item or the like, defined by a pair of angularly oriented surfaces. The sander device comprises a mounting bracket defining a pair of support plates oriented at a selected angle, e.g., a right angle, relative to each other, and wherein the support plates are adapted to receive and support sandpaper sheets at the selected angle. The mounting bracket with sandpaper sheets mounted thereon is removably mounted onto a base which includes a handgrip to facilitate manipulation of the sander device relative to a corner structure to be sanded.

Abstract: Abrasive articles and methods for their manufacture are described. The articles are screen abrasive articles including a durable backing member having a patterned array of portions thereon arranged around a plurality of openings extending through the backing with the openings comprising between about 20% and about 80% of the total area of the backing. A coating of abrasive material is adhesively affixed to the array of portions on the backing, forming abrasive surfaces arranged around the openings to cooperatively function as a single abrasive surface while the openings allow debris to pass through the article during abrasive applications. In at least one aspect of the invention, the portions of the backing include a plurality of first surface portions and a plurality of second surface portions having surface areas greater than the surface areas of the first portions.

Abstract: A contour sander for sanding a curved surface includes a hard backing plate having a support face for supporting a sheet of sandpaper. The backing plate is uniformly flexible along substantially its entire length for conforming generally to the curvature of the surface. A pliable handle extends along the length of the plate and follows flexure of the plate when a sanding pressure is applied against the handle.

Abstract: A new Countouring Sanding System for sanding various shapes of surfaces while providing the user an ergonomic sanding block decreasing wear on the user's hands. The inventive device includes an ergonomic sanding block, a template securing means attached to the ergonomic sanding block, and a molding template removably secured within the ergonomic sanding block by the template securing means.

Abstract: A blade sharpener for a pocket knife is in the form of an appendage which can be removably secured to the knife handle and which carries a superabrasive layer sharpening surface, such as an electroplated diamond grit. The appendage may take the form of a pair of tweezers, such as those commonly found on Swiss army type knives, with the superabrasive layer being attached to its inside surfaces.

Abstract: An abrading device comprising two planar members that are disposed in a spaced apart relationship by at least one spacing member, a plurality of abrasive particles distributed over only the outermost surfaces of said two planar members, the space between said planar members being large enough to accommodate and protect the extended fingers of a person using the device.

Abstract: A container assembly for a sharpening stone which can be converted from a package for transport and display into a pedestal for supporting and exposing the sharpening stone for use. The assembly is formed of a sheet of polymeric material having a plurality of panels joined by living hinges. A generally box-shaped package can be formed for containing the sharpening stone by folding the panels in one direction and joining end flaps and panels by the use of detents. A pedestal for exposing the sharpening stone can be formed by folding the respective panels on the assembly in the opposite direction and joining into a box-shaped configuration with the use of the end flaps, panels and detents.

Abstract: A device for testing for the presence of lead on a painted surface includes a porous dauber formed from an absorbent sintered plastic. The dauber is preimpregnated with a powdered mixture containing rhodizonate dye which is activated by dipping the dauber in a small quantity of water. After activation, the dauber is rubbed on the surface and is then visually observed for a reaction with lead that may be in the surface. The device also includes an abrasive element that can be used to abrade the painted surface before contacting the same with the dauber.

Abstract: A sanding block having a generally rectangular block with a top, a bottom, a front side, a back side, a right side and a left side. An elongated kerf, is formed along the entire length of either the front side or the back side and the kerf has an accurately positioned bottom. One end of the block is tapered and the block is used by forming six folds in a standard 9".times.11" piece of sand paper which can then be slid over the block, secured in the kerf and used as a sanding block.

Abstract: A tool assembly for finishing a spherical surface of a bowling ball includes a tool having a pliable solid right cylindrical body with concave-shaped depressions formed in opposite faces of the body and a pair of abrasive disks disposed in the depressions. The body is shorter in axial length than in diameter, with the opposite faces thereof being spaced apart by the axial length, and generally parallel to each other. The depressions are centered on the opposite faces and oriented back-to-back. One concave depression has a larger chordal length than the other but both concave depressions have spherical radii similar to that of a bowling ball. The abrasive disks are releasably attached, with hook and loop material, in the concave depressions so as to lie substantially flush against the surfaces of the depressions.

Abstract: A pad for cleaning porcelain greenware comprising an abrasive sheet for contacting and cleaning porcelain greenware; a foam backing member; and a glue secured to the abrasive sheet and to the foam backing member for securing together the abrasive sheet and the foam backing member. A process or a method for wetcleaning porcelain greenware comprising the steps of: providing a porcelain greenware; providing a container with water; providing the pad; contacting the porcelain greenware and the pad with the water; and sliding the abrasive sheet against the porcelain greenware.

Abstract: A windshield wiper blade cleaning device is disclosed having a channel for receiving the tip of a wiper blade, the channel having a frictional base for removing dirt from the tip of the blade as the blade is drawn longitudinally through the channel. In an alternate embodiment, the channel also has frictional walls for cleaning the sides of the blade. In described embodiment, the base and/or walls are made frictional by means of projections, filaments, or abrasive materials.

Abstract: A twisted stem helical internal abrading and finishing tool is formed from abrasive containing plastic strips having transverse offset slits along the lateral edges and a longitudinal middle unslit portion. The strips may be stacked with the longitudinal middle unslit portions aligned with the longitudinal axis of a cotter pin, one end of the stack being placed in the bight of the cotter pin. The cotter pin is twisted about its longitudinal axis to form a helical twisted stem from which the slit lateral side or edges extend forming rectangular abrasive fingers uniformly helically arranged. The end of the cotter pin opposite the bight may be inserted into the chuck of a drilling or turning machine to hold and rotate the tool about the axis of the stem.

Abstract: The present invention relates to an abrasive article for abrading material from a workpiece. In one embodiment, the abrasive article includes a back-up pad having first and second major surfaces. The first major surface includes a shaft adapted to connect the abrasive article to an abrading apparatus for movement relative thereto. Adjoining the second major surface are first and second resilient support portions, to which are attached first and second abrading members, respectively. When an operator applies a first force to the abrading apparatus, the first abrasive surface contacts and abrades the workpiece. When the operator applies a second force that is greater than the first force, both the first and the second abrasive surfaces contact and abrade the workpiece.

Abstract: An improved endless belt sanding block, typically having four flat rigid support sections connected by a set of hinges (12), (16), (22), and (28) to form a foldable closed loop. Two of the support sections, an upper tapered support (18), and a lower tapered support (26), have thickened ends which hinge together at the inner surface of the foldable loop. A base support (10), typically the longest support section, and a top support (14), typically intermediate in length, complete the closed loop. When tapered supports (18) and (26) are folded inward at the juncture of their thick ends, the sanding block is in a contracted position and an endless sanding belt (32) may be placed around the outer surface of the sanding block. Conversely by folding outward, the thick ends pry outward against the endless sanding belt causing it to tighten. A brace section (24) inside the foldable loop connects to the same hinge used at the tapered supports juncture to form a triple hinge (22).

Abstract: A hand sanding block is formed with two blocks, which may be of equal or unequal lengths of like cross section and disposed in coplanar relationship with opposed inner ends. The blocks are freely movable towards and away from each other almost to the point of separation, by means of a pair of spaced dowel pins projecting from one block for telescopic engagement in corresponding spring loaded sockets in the other block and are normally held apart in spaced relationship by the springs in the sockets. For mounting and removing an endless sanding belt the blocks are pressed together so the inner ends are in abutting relationship and once the belt is in place, the holding pressure is released so the blocks can move apart to provide tension on the belt.

Abstract: A tool for filing or abrading surfaces or for sharpening instruments such as knives, chisels and the like includes two spaced thin ferromagnetic rails having co-planar upper edges. A magnet is located between the rails with a ferromagnetic plate magnetically held to the rail. The plate has an exposed abrasive coated surface. A first magnetic pole of the magnet concentrates and conducts magnetic flux to the plate through the rails with sufficient force to hold the plate in position against the upper edges of the rails without the need for a retaining cavity to further restrain the plate from moving during use.