Abstract: A method of fabricating a printed circuit board power core is disclosed wherein ceramic particles that have a diameter that is approximately equal to the desired dielectric thickness are combined with dielectric powders that have a relatively very small size. To produce a dielectric core using this technique, a dielectric material mixture is applied between two conductor layers and bonded therebetween. This dielectric material mixture preferably has a concentration of large particles equal to the desired core thickness with a loading factor of large/small particles less than the maximum ratio needed to provide the desired dielectric constant, but greater than the ratio required to provide stability during the pressing and curing steps.

Abstract: The cleaning tape comprises a substrate on which is overlaid a coating that provides a mechanical abrading surface to clean the elements in the tape path, such as the read/write heads. The coating has a high coefficient of friction to remove and retain the residues that have accumulated on the read/write heads. The coating is impregnated with or encloses a cleaning solvent that is controllably released by the mechanical movement of the cleaning tape over the read/write heads. The cleaning solvent can be isopropyl alcohol or other solvents that are encapsulated in some manner in the cleaning tape. As the solvent is released on to the read/write heads, it chemically loosens the debris which the abrasive coating can then mechanically remove from the read/write heads and also retain on the abrasive coating.

Abstract: A stackable linear actuator using flat, planar carriages. Each carriage is formed of two thin fiber reinforced outer surfaces having a low density composite core between each of the outer surfaces. A flat single layer coil is mounted within the composite core. The carriages are mounted for relative movement in a vertical stack. Between each carriage is a set of permanent magnets of opposing polarity. The sets of magnets are aligned so that magnets of similar polarity are aligned vertically. A steel plate is attached at the top of the stack. Another steel plate is attached to the bottom of the stack. These plates shunt the magnetic flux to form a continuous loop of magnetic flux through the entire stack. The carriages are operated by supplying the coils with current of varying intensity and polarity.

Abstract: Adhesive Compositions comprising a solid component of from about 60 to 90 percent of a solid resin and from about 10 to 40 percent flexible resin which are suspended in a liquid component comprised of from about 80 to 98 percent solvent and from about 2 to 20 percent curing agent and wherein the solid component comprises from about 10 to about 30 percent of the overall composition and the liquid component comprises about 70 to 90 percent of the overall adhesive composition can be used to "quick tack" electrical components in minimal amounts of time and with minimal amounts of electrical resistance between the components.

Abstract: A method and apparatus for positioning a magnetic read/write head with precision orientation on a suspension assembly arm. The arm contains a plurality of mounting indicia. Computer controlled apparatus, including an optics system, scans the mounting indicia and the head and mounts the head on a predetermined desired location on the arm and with the desired orientation.

Abstract: A method and apparatus for positioning a magnetic read/write head with precision orientation on a suspension assembly arm. The arm contains a plurality of mounting indicia. Computer controlled apparatus, including an optics system, scans the mounting indicia and the head and mounts the head on a predetermined desired location on the arm and with the desired orientation.

Abstract: The invention provides a hard, strong ceramic body and a ceramic raw batch and method for manufacture whereby the body, after being formed of the raw batch in the shape and size desired, can then be fired to monolithic structure without any shrinkage or distortion during the firing operation. The raw batch contains aluminum oxide, magnesium oxide, glass frit and a silicone resin, these constituents being present in a ratio such that after the firing operation the resulting monolithic body contains from about 70% to 95% by weight crystalline material and the remainder interstitial glass, the crystalline material consisting predominantly of magnesium aluminate spinel and alumina. The ceramic and method have particular utility for making dental crowns and other dental appliances where a precise fit along with high strength and wear resistance are desirable.