Abstract: An economical means of safely “containing” or “packaging” commercial electrophilic fluorination agents whereby these agents are readily stored and transported in a package, typically without loss of “F+” activity, and in a form which is readily and directly useable, i.e., in solution or a slurry. Importantly, the solution/slurry medium provides a tremendous safety margin for storage and transportation since the solution medium has an enormous ability to absorb heat (due to the latent heat of vaporization of the liquid) relative to the contained active fluorination agent.

Abstract: A water-free solution and method for dissolving and removing thermal grease from a high frequency logic device (e.g. a microprocessor in the form of a BGA and ASIC in the form of Quad Flat Pack component) assembled onto an electronic card which needs to be reworked. The method and solution of the present invention allow the complete removal of the grease by a simple and fast process, using an alcoholic, inert and cheap solution, without needing a mechanical action (e.g. brushing) and without damaging the card components. Furthermore, given the low surface tension of the alcoholic solution a good diffusion within the small holes and spaces of the card is ensured.

Abstract: A method for removing thermal grease from an electronic card having plated via holes and including electronic components thereon, the method including the steps of providing a substantially water free solution having an alcohol and at least one compound of a neutral ammonium salt of an organic acid and immersing the electronic card in the solution for a predetermined period of time remove the thermal grease from the electronic card.

Abstract: Disclosed are waterborne, stable photoresist compositions and methods of their preparation and use. The compositions are characterized by increased shear and storage stability. The photoresist composition comprises an aqueous emulsion of a 22% or less neutralized carboxylated resin and non-ionic surfactant containing poly(ethylene-oxide) segments, photopolymerizable monomer and photoinitiator. Neutralization is accomplished using either an organic or an inorganic base or mixtures thereof. The photoresist compositions are useful to selectively coat and protect surfaces subjected to corrosive environments, e.g., etchant processes, in the production of circuit traces for electronic circuit boards.

Abstract: An antifoam additive for hydrocarbon oils and in particular fuel oils comprises the combination of an antifoam agent and an ashless dispersant.

Abstract: The present invention provides a method of ablative photodecomposition and forming metal pattern which attains high resolution, is convenient, and employs non-halogenated solvents. The present invention is directed to a process for forming a metal pattern, preferably circuitization on an organic substrate, preferably on a circuit board or component thereof, which comprises coating the substrate with an ablatively-removable coating comprising a polymer resin preferably an acrylate polymer resin and preferably an ultraviolet absorber. A pattern is formed in the polymer coating corresponding to the desired metal pattern by irradiating at least a portion of the polymer coating with a sufficient amount of ultraviolet radiation to thereby ablatively remove the irradiated portion of the polymer coating. Next the patterned substrate is coated with a conductive metal paste to define the metal pattern, and the conductive metal paste is cured.

Abstract: A set of strings for a stringed musical instrument. Each string of the set is attached at one end to a bead to anchor the string in one of the bridge pins. The opposite end of the string is affixed to a pin having a diameter adapted to fit in the bore in a conventional post. The length of the string between the bead and the pin is at least equal to the distance between the bridge pin and the rotatable string post but not greater than the sum of said distance and the circumference of the post. Thus the post is tightened less than one revolution in order to tune the string.

Abstract: A bailer pump designed for securing to a well head comprising an elongated stan pipe projecting upward from the well head supporting a motor driving a reel for cable through a drive train incorporating a magnetic brake, when the current to the motor is interrupted the magnetic brake is activated. A bailer is propelled into and out of the well in a repititious controlled manner. The electrical control mechanisms operate in conjunction with a pivot arm mounted at the top of the stan pipe on an axle. Pillow blocks retain the pivot arm in a tilting position. Tension or lack of tension on the cable passing over the top pulley causes a reciprocal tilting of the pivot arm and the pulley. The tilting arm contacts a micro switch which through time delay and relays start, stop, and reverse the electric motor operating the cable reel. The short delay in the well permits filling of the bailer and a long delay at the well head permits unloading of the bailer.

Abstract: In a piano pedal assembly adapted to control the duration and amplitude of musical tones or notes generated by a piano, the individual pedals of the assembly when attached to the piano, are maintained in their normal position under pressure and adapted when depressed to pivot about a pin. The assembly is mounted on a support such as a base plate, and a pair of pedal mounting blocks having a cylindrical opening, for securing opposite sides of the pivot pin, are mounted within openings in the base plate. The pedal mounting blocks are formed from a low friction material such as Nylon or Teflon and function to provide and maintain precise registration of the individual pedals within the assembly. The piano pedal assembly utilizes fewer and less complex parts and components than prior art assemblies whereby the assembly time and fabrication cost of pedal assemblies are substantially reduced.