Abstract: A thermoplastic elastomer (TPE) is disclosed which is markable by a laser operating at an ultra-violet wavelength because of the presence of between about 0.05 and about 0.1 weight percent of titanium dioxide or between about 0.1 and 0.3 weight percent of zinc oxide.

Abstract: A method of solenoid valve control includes measuring voltage across the solenoid valve and current through the solenoid valve, and using the results to aid in controlling the solenoid valve. For instance, one or both of the measured values may be used to determine when actual engagement of the solenoid valve occurs. An initial lower voltage and lower current can be used, and then as conditions change, the changes in condition can be accounted for by increasing voltage and current to maintain the desired response time of the solenoid valve. By measuring and controlling voltage and current less of a margin can be used, both in setting voltage/current levels and in selecting the time over which a pull voltage/current is utilized. This reduces the wasted energy in the system, as well as reducing the temperature rise in the solenoid valve.

Abstract: A thermoplastic elastomer (TPE) compound is disclosed which has very low hardness by virtue of the use of a combination of porous styrene block copolymer thermoplastic elastomer of a molecular weight greater than 200,000 and plasticizer oil of a molecular weight less than 400 present in an amount between 85 and 91 weight percent. Super-soft extruded or molded plastic articles can be formed from pellets of the compound, with a resulting Shore OOO Hardness of between 45 and 60. Molded articles can be prepared using hot melt adhesive dispensing units.

Abstract: A thermoplastic elastomer (TPE) is disclosed which is markable by a laser operating at an ultra-violet wavelength because of the presence of between about 0.05 and about 0.1 weight percent of titanium dioxide or between about 0.1 and 0.3 weight percent of zinc oxide.

Abstract: A thermoplastic elastomer (TPE) is disclosed which is foamed and has low density by virtue of the use of glass microspheres.

Abstract: A method of solenoid valve control includes measuring voltage across the solenoid valve and current through the solenoid valve, and using the results to aid in controlling the solenoid valve. For instance, one or both of the measured values may be used to determine when actual engagement of the solenoid valve occurs. An initial lower voltage and lower current can be used, and then as conditions change, the changes in condition can be accounted for by increasing voltage and current to maintain the desired response time of the solenoid valve. By measuring and controlling voltage and current less of a margin can be used, both in setting voltage/current levels and in selecting the time over which a pull voltage/current is utilized. This reduces the wasted energy in the system, as well as reducing the temperature rise in the solenoid valve.

Abstract: A bonded-abrasive tool includes a matrix of an organic bond, abrasive grains dispersed in the organic bond and a grinding aid in the form of either an inorganic nonhalogenated filler or a hydrated filler. The inorganic nonhalogenated filler can react with free radicals released from the organic bond during grinding. The hydrated filler endothermically releases water. A coated-abrasive tool includes a flexible substrate, abrasive grains bonded to the flexible substrate, and an organic bond containing a grinding aid including an inorganic nonhalogenated filler or a hydrated filler coated on the substrate.

Abstract: Bonded abrasive products comprising alumina-based abrasive grains and a geopolymer bond system are significantly improved by providing the grain with a vitreous coating before incorporation in the geopolymer bond.

Abstract: A resin bonded abrasive tool consists of abrasive grain and an organic bond comprising a thermosetting resin, such as epoxy resin, phenolic resin or rubber or blends thereof and a precursor filler system capable of forming in situ an active filler system by reacting under the heat generated during grinding. The organic bond optionally further comprises a filler system. A method of making the resin bonded abrasive tool consists of mixing the abrasive grain and the organic bond with the precursor filler system, pressing the resulting mixture into shape, and curing the abrasive tool at about 150 to 200.degree. C.

Abstract: Arylethynyl phthalic anhydrides have been synthesized and shown to have particular application as endcappers or pendant groups in high performance/high temperature thermosets which include amine terminal or amine pendant groups.

Abstract: A capacitive ratioing oscillator circuit utilizing a prior art pressure capsule, but through modification of the state variable oscillator circuit achieves a digital output which varies with the square root of the capacitance ratio C35 C.sub.p /C.sub.r. In this sensor the dielectric constant of the pressure media is measured in time with the pressure difference measurement. The oscillator includes a differentiator-inventor step herein each of capacitors C.sub.r and C.sub.