Abstract: The present invention is a metal bond comprising a filler with a Vickers hardness from about 300 kg/mm.sup.2 to about 800 kg/mm.sup.2 wherein the Vickers hardness of the filler is maintained above 300 kg/mm.sup.2 upon firing of the bond at a temperature above 700.degree. C. for at least about 10 minutes. The present invention further is an abrasive tool comprising a metal core; an abrasive composition comprising diamond and the above metal bond, bonded to the metal core.

Abstract: A method of removing material from a surface comprising abrading a surface comprising the step of abrading a surface with an abrasive tool or an abrasive powder comprising a boron suboxide (BxO) composition, wherein during the abrading step the boron suboxide (BxO) composition is maintained at low temperatures. The abrasive which is from the boron suboxide (BxO) family of compounds exhibits an unexpectedly high quality of abrading comparable with the highest quality particulate natural and synthetic diamond, which has a hardness about double that of the boron suboxide (BxO) of the present invention.Further, the invention includes a lapping and polishing powder and lapping slurry wherein the powder is made from a dense, finely crystalline boron suboxide material with a Knoop hardness KHN.sub.100 of at least about 2800 kg/mm.sup.2 and preferably at least 3800 kg/mm.sup.2.

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: A device made of non-contaminating inert material for taking and preserving a fluid sample containing volatile substances for analysis having a tubular body with gas tight valves at opposite end portions which are opened to allow fluid to pass into and out of a chamber and closed to seal off the escape of and preserve a fluid sample therein during transfer to a laboratory for analysis. Opposite end portions of the tubular body are adapted for attachment of a lower one-way inlet check valve unit and an upper outlet extension unit thereto used with a supporting line or rod to lower and raise the device into and out of a body of fluid and thereby take a fluid sample thereof for analysis. Closing of the valves traps fluid and seals off the sample taken into the chamber between the valves and is removed therefrom by piercing a septum located adjacent the chamber and between the valves by suitable means including a hypodermic needle.

Abstract: Gasket formed in place on a surface of an article by producing an initial elongated bead of a selected cross-sectional area and bringing a mold cavity having the same cross-sectional area into contact with the surface to produce the final shape of the bead on the surface.

Abstract: Abrasive tools are described which comprise abrasive grits held in a glass-ceramic bond in which at least 75% of the bond material is in bond posts or in coatings on individual grains.

Abstract: A compressible, flexible, resilient wedge shaped sealing strip for maintaining conforming sealing engagement with opposing spaced walls of various structures and sealing joints therebetween has a flexible resilient hollow body with an outer layer of foam both made of a material having the ability to recover from a compressed state and thus continuously exert and force the sealing strip into sealing engagement with the opposing spaced walls of the structure.