Abstract: A radial bellcrank actuator comprising a piston with a circumferential piston groove, and a bellcrank attached to an output shaft. The bellcrank has a bellcrank piston lobe at one end, and a bellcrank output shaft lobe at the other. The bellcrank piston lobe is attached to the bellcrank output shaft lobe at a bellcrank waist. The bellcrank piston lobe is sized to fit into the piston groove, such that reciprocation of the piston causes rotation of the bellcrank and attached output shaft. Relationships between the dimensions of the bellcrank lobes, the distance between their centers, the thickness of the bellcrank piston lobe, and the waist width are disclosed, which permit the preferred embodiment radial bellcrank actuator to provide up to 90 degrees of rotation. Thus, the instant invention is economical, simple, long-lasting and provides symmetrical loading to its components.

Abstract: Galvanized steel stock treated for the application of a finished coating or top coating. The galvanized steel is roughened with zinc pellets. The use of zinc pellets ensures that there are essentially no impurities in the treated zinc coating which would later form oxidation sites for corrosion.

Abstract: A free flowing powder of discrete particles of a polar group-containing modified propylene polymer (MPP) is disclosed. This MPP powder has an average particle size of less than about 5 microns and comprises about 25-45 wt. % of discrete particles of the MPP and about 55-75 wt. % of a liquid which is a solvent for a film forming resin material, all wt. percentages being based on the total weight of the powder. The preferred MPP is maleic anhydride polypropylene. The preferred film forming resin solvent is methyl ethyl ketone (MEK). The MPP powder is adapted to be suspended in a primer composition containing a film forming resin, preferably an epoxy resin.

Abstract: A process for preparing a free-flowing powder is disclosed, which powder is useful in primer compositions. The process comprises the steps of (a) dissolving a polar group-containing modified propylene polymer (MPP) at an elevated temperature in a solvent for the MPP, (b) cooling the solution to precipitate particles of the MPP, (c) collecting the precipitated particles by simultaneously centrifuging and spraying the particles with a liquid capable of removing the solvent from the particles and which is also a solvent for a film forming resin, such as an epoxy, which is present in the primer composition, (d) continuing step (c) until substantially all of the solvent for the MPP has been removed from the particles, and (e) collecting the resulting powder, which has an average particle size of less than about 5 microns.

Abstract: Primer compositions are disclosed which are a homogeneous, fluid, uncured suspension of discrete particles of a polar group-containing modified propylene polymer (MPP) in a film forming resin material, the particles having an average particle size of less than about 5 microns, and the primer composition being substantially free, i.e., containing less than about 5%, of a solvent for the MPP based upon the weight of said MPP. The preferred MPP is maleic anhydride polypropylene. The preferred film forming resin material is an epoxy resin. The particles of MPP are present in the primer in an amount of at least about 3%, preferably at least 40%, by weight based on the weight of the nonvolatile content of the primer.

Abstract: A method and apparatus are disclosed for determining the concentration of coliform bacteria in a sample. The sample containing the coliform bacteria is cultured in a liquid growth medium. The cultured bacteria produce hydrogen and the hydrogen is vented to a second cell containing a buffer solution in which the hydrogen dissolves. By measuring the potential change in the buffer solution caused by the hydrogen, as a function of time, the initial concentration of bacteria in the sample is determined. Alternatively, the potential change in the buffer solution can be compared with the potential change in the liquid growth medium to verify that the potential change in the liquid growth medium is produced primarily by the hydrogen gas produced by the coliform bacteria.

Abstract: Rovings impregnated with solid or preferably semi solid thermosetting resin and which can be handled in textile processing equipment are provided by overcoating the impregnated roving with a thermoplastic resin dispersed in a volatile liquid medium which does not dissolve the thermosetting resin to form an encapsulating membrane of thermoplastic resin around the impregnated roving to thereby provide the strength, flexibility, and surface properties needed for textile handling without degrading the properties desired in the final cured molded product.

Abstract: Rovings impregnated with solid or preferably semi solid thermosetting resin and which can be handled in textile processing equipment are provided by overcoating the impregnated roving with a thermoplastic resin dispersed in a volatile liquid medium which does not dissolve the thermosetting resin to form an encapsulating membrane of thermoplastic resin around the impregnated roving to thereby provide the strength, flexibility, and surface properties needed for textile handling without degrading the properties desired in the final cured molded product.

Abstract: Rovings impregnated with a semi solid mixture of thermosetting resin and thermoplastic resin and which can be handled in textile processing equipment are provided by overcoating the impregnated roving with a thermoplastic encapsulating resin to form an encapsulating membrane of thermoplastic resin around the impregnated roving which provides the strength, flexibility, and surface properties needed for textile handling. The thermosetting resin is preferably an epoxy-resin dicyan-diamide combination and it is preferably used in admixture with a polysulfone resin.

Abstract: Rovings impregnated with solid or preferably semi solid thermosetting resin and which can be handled in textile processing equipment are provided by overcoating the impregnated roving with a thermoplastic resin dispersed in a volatile liquid medium which does not dissolve the thermosetting resin to form an encapsulating membrane of thermoplastic resin around the impregnated roving to thereby provide the strength, flexibility, and surface properties needed for textile handling without degrading the properties desired in the final cured molded product.

Abstract: A multi-point fluid sample collection and distribution system is provided wherein the sample inputs are made through one or more of a plurality of sampling valves to a progressive cavity pump which is not susceptible to damage by large unfiltered particles. The pump output is through a filter unit that can provide a filtered multi-point sample. An unfiltered multi-point sample is also provided. An effluent sample can be taken and applied to a second progressive cavity pump for pumping to a filter unit that can provide one or more filtered effluent samples. The second pump can also provide an unfiltered effluent sample. Means are provided to periodically back flush each filter unit without shutting off the whole system.

Abstract: A supply package for wet-impregnated multifilament roving is provided in which the multifilament roving is impregnated with a curable liquid having a tack less than about 6 (measured on a Thwing-Albert inkometer) in an amount at least sufficient to fill the spaces between the filaments in the roving, but not in excess of about a 3:2 ratio of curable liquid to fiber, by volume. This impregnated roving is way wound onto a cylinder to provide a crossing angle between the rovings in adjacent layers of at least about 10.degree. to provide free volume storage capacity between the angled rovings which accepts any liquid which may run off. In this manner the wet-impregnated roving can be stored wet in the way wound cylinder and easily withdrawn therefrom when needed.