Abstract: An abrasive article having certain minimum levels of permeability to fluids comprises about 40 to 80%, by volume interconnected porosity and effective amounts of abrasive grain and bond to carry out soft grinding and deep cut grinding operations. The high permeability to the passage of fluids and interconnected porosity provides an open structure of channels to permit the passage of fluid through the abrasive article and the removal of swarf from the workpiece during grinding operations.

Abstract: An efficient method for manufacturing bonded abrasive articles comprises the use of elongated abrasive grain having a length to cross-sectional width aspect ratio of at least 5:1 to yield abrasive articles which are highly permeable to the passage of fluids. A method for measuring permeability is provided. The abrasive articles are used to carry out soft grinding and deep cut grinding operations. The permeable abrasive articles provide an open structure of pores and channels permitting the passage of fluid through the abrasive article and the removal of swarf from the workpiece during grinding operations.

Abstract: The present invention is a high speed cutting belt for cutting various aggregate and non-aggregate, natural stone and composite building materials with steel or non-steel reinforced materials. The cutting belt comprises a tensile member base, a plurality of cutting segments brazed with brass shim stock to anchors and crimped to the tensile member base, and molded in urethane to form a continuous, flexible belt, said belt having a 90.degree. "V" shaped bottom inner surface and a flat, outer top surface.

Abstract: A vitreous bonded abrasive grinding wheel comprises silicon carbide abrasive grain, hollow ceramic spheres and a low temperature, high strength bond. The wheel has improved corner or profile holding characteristics and improved mechanical properties and is suitable for grinding non-ferrous materials.

Abstract: A pressure sensitive adhesive consisting of a polyurethane foam is used for adhering decorative parts to automobiles and other vehicles. The adhesive is characterized by high tensile strength and elongation, excellent peel strength and good thermal and mechanical stress tolerance.

Abstract: Textured indentations in the cutting surface of the core of a cutting tool are designed to accommodate a single layer of superabrasive grain. The superabrasive grain contained in these textured indentations is thereby oriented during metal bond brazing such that a cutting edge of the superabrasive grain is oriented outward from the plane of the cutting surface of the core. Enhanced bond life, cutting performance and tool life are achieved.

Abstract: Uncured molded abrasive articles having low volatile organic chemical content are prepared using water as a temporary binder. The abrasive articles preferably contain a uniformly coated abrasive grain comprising a novolac resin having a phenol:formaldehyde ratio of 1:0.2 to 1:0.35 and containing less than 0.5% free phenol.

Abstract: The invention relates to an improved grinding wheel for grinding eye glass edges. The grinding wheel comprises a base member and an abrasive coating of diamond and metal. The base member 3 consists substantially of plastic material and an annular member 2 of metallic material is provided between the base member 3 and the coating 1. The metallic material of the annular member 2 has a strength withstanding the forces occuring in sintering the coating to the annular member.

Abstract: An improved method for preparing a molding material for abrasive articles has been developed. The method includes the step of continuously blending an abrasive material with a curing agent and measured portions of two phenol-novolac resins, one of which has a phenol-formaldehyde molar ratio in the range of about 1:0.2 to 1:0.35. The blending composition can also include various other materials, such as fillers. The resulting product is a flowable, granular material homogeneously coated with the phenol-novolac resins. The product can be directly molded, i.e., without an aging step, into various abrasive articles, such as grinding wheels.In another embodiment, either a continuous or discontinuous technique can be used to blend the phenol-novolac resins, and the molded product is then cold pressed or warm pressed at a pressing temperature less than about 140.degree. C.

Abstract: A vitreous bonded abrasive tool comprises 12 to 50% bond, 5 to 50% metal coated superabrasive, at least 10% porosity and 2 to 20% solid lubricant. The abrasive tool containing titanium or nickel coated diamond is particularly effective in grinding ceramic material, such as sapphire.

Abstract: The present invention provides a vitreous-bonded abrasive grinding wheel wherein the abrasive grit portion comprises a sol-gel alumina abrasive and wherein the wheel has improved corner or form holding characteristics and mechanical properties. The invention further includes the bond composition which allows for improved corner or form holding and mechanical properties with sol-gel alumina abrasives.

Abstract: A maintenance-free sliding bearing composed of a metal support and a layer which is directly applied thereto and which consists of a copolymer of ethylene-tetrafluoroethylene forming an intermediate layer to which a second sliding layer of plastics is applied.

Abstract: A universal sampling device for retrieving samples of high and low viscosity substances at various depths and from specific portions of contained bodies of materials without being completely submerged therein, is disclosed. The sampling device is made of chemically inert material, has manually operable inlet and outlet vent valve means attached to opposite inlet and outlet ends of a relatively long tube into which the sample enters upon opening of the inlet and outlet valve means at the desired point in the substance to be tested. Means are provided for manually closing and opening of the inlet valve means such as pushing and pulling a valve stem by hand into sealingly engagement with an inlet valve body. Another method attaches a valve stem to an adjustable valve control rod extending upwardly through the tube and outlet valve means.

Abstract: Apparatus for heating a fiber using microwave energy. The apparatus has a source of microwave energy feeding and applicator. The applicator is configured to concentrate the microwave energy on a chamber holding a fiber. Fibers made or coated using chemical vapor deposition in the apparatus are also disclosed.

Abstract: The present invention provides a vitreous-bonded abrasive grinding wheel wherein the abrasive grit portion comprises an alumina abrasive and wherein the wheel has improved corner or form holding characteristics and mechanical properties. The invention further includes the bond composition which allows for improved corner or form holding and mechanical properties with alumina abrasives.

Abstract: The present invention provides a composition comprising a blend of:(A) from about 90% to about 10% by weight of polymethylpentene, wherein the polymethylpentene has a molecular weight between from about 200,000 to about 700,000, and a melt flow rate between from about 20 grams/10 minutes to about 200 grams/10 minutes;(B) from about 10% to about 90% by weight of polypropylene, wherein the polypropylene has a molecular weight between from about 150,000 to about 350,000, and a melt flow rate between from about 1 gram/10 minutes to about 10 grams/10 minutes;whereby the blend of (A) and (B) has improved elongation and improved release properties.The invention further provides a blend with improved tensile strength, improved elongation, and improved release properties, and a method of producing a article with improved release properties from the blend.

Abstract: The present invention is related to an abrasive tool comprising a core and abrasive segments attached to said core wherein said abrasive segments comprise a bond material and superabrasive grains and wherein said segments comprise at least two circumferentially spaced regions and wherein said superabrasive grains are alternately dispersed in said regions in high and low concentrations of superabrasive grains. The present invention is further related to an abrasive tool comprising a core and abrasive segments attached to said core wherein said abrasive segments comprise a bond material and superabrasive grains, wherein said abrasive segments comprise at least two circumferentially spaced regions and wherein said superabrasive grains are alternately dispersed in every other region.

Abstract: A system for attaching fireproofing panels to a poured structure. The panels are made with projecting members. In use, the panels line a form with the projecting members facing inward. When the form is removed, the panels are embedded in the poured structure by virtue of the projecting members. The same bolts are used to secure the panels to the form and to secure the joints between panels after the forms are removed.

Abstract: The present invention is a disposable bailer having an elongated tube with opposite inlet and outlet ends of the tube, both ends being integral with the tube and tapered; with an inlet valve means, the inlet end of the tube being continuously molded with the tube to form an internal cavity for containing the inlet valve means.

Abstract: Improved hot-pressed vitrified bodies are described, which comprise an abrasive material, a vitreous bond; and at least one extender agent. The extender agent may be formed of hollow ceramic bodies such as glass or mullite spheres, alone or in combination with a non-reactive material such as graphite. An improved method for preparing vitrified abrasive wheels is also described.