Abstract: Hemodialysis and similar dialysis systems including a variety of systems and methods that make hemodialysis more efficient, easier, and/or more affordable, and include new fluid circuits for fluid flow in hemodialysis systems and a reciprocating diaphragm pump for pumping fluids. The reciprocating diaphragm pump includes a flexible diaphragm, a first rigid body having a curved pumping chamber wall, a second rigid body having an opposing curved control chamber wall. The diaphragm is interposed between the pumping chamber wall and the control chamber wall to define a pumping chamber and a control chamber. The diaphragm of the pump has a peripheral bead arranged to locate the diaphragm between the first rigid body and the second rigid body and a diaphragm body having a curved, semi-spheroid or domed shape.

Abstract: The present invention relates to concrete mulch and methods for making the same. The concrete mulch is made from crushed waste concrete, a colorant and a binder which colors the concrete pieces to look like natural mulch. The concrete mulch is available in a wide variety of shapes and sizes; however, it is preferred for the concrete mulch to look like natural rock, bark nuggets or natural mulch.

Abstract: A thermoplastic and thermoformable pigment-containing metallic automotive paint is solvent cast and dried to form a finished metallic automotive paint coat for a decorative film used in a thermoforming process to form an exterior paint layer on a molded plastic automotive body panel. The paint coat contains a pigment uniformly dispersed in a polymeric binder material preferably comprising an alloy of a polyvinylidene fluoride (PVDF) copolymer and an acrylic resin in which the PVDF copolymer is provided as a dispersion in the acrylic resin. Preferably, the dispersed form of the PVDF copolymer has a particle size of about eleven microns or less, and more preferably a mean particle size range of about 3 to about 4.5 microns. The dispersion ratio is preferably from 80% to 20% PVDF copolymer and from 20% to 80% acrylic resin, respectively, by a weight. A low molecular weight form of the PVDF copolymer is preferred and characterized by a melt viscosity of 17,000 to 20,000 poise at 230.degree. C.

Abstract: A thermoplastic and thermoformable pigment-containing metallic automotive paint is solvent cast and dried to form a finished metallic automotive paint coat for a decorative film used in a thermoforming process to form an exterior paint layer on a molded plastic automotive body panel. The paint coat contains a pigment uniformly dispersed in a polymeric binder material preferably comprising an alloy of a polyvinylidene fluoride (PVDF) copolymer and an acrylic resin in which the PVDF copolymer is provided as a dispersion in the acrylic resin. Preferably, the dispersed form of the PVDF copolymer has a maximum particle size less than about 35 microns, and more preferably 20 microns, with a mean particle size range of 6 to 10 microns. The dispersion ratio is preferably from 80% to 20% PVDF copolymer and from 20% to 80% acrylic resin, respectively, by weight. A low molecular weight form of the PVDF copolymer is preferred and characterized by a melt viscosity of 17,000 to 20,000 poise at 230.degree. C.

Abstract: An incoming pulse train is evaluated for interpulse spacing and pulse repetition rate by first shaping the pulses into a desired configuration in a dial pulse shaper (12). The shaped pulses are applied to a pulse counter and controller (14) to generate numerator and denominator signals of a divide function. The numerator and denominator signals are gated through a data selector (16) to an up counter controller (24). The up counter controller (24) gates a 2 KHz clock to a counter in a divider and display (18) during the denominator signal and during the numerator signal the counter within the divider display (18) is gated to perform the divide functions. The divider and display (18) carries out a division function of the numerator by the denominator with the quotient representing the percent interpulse interval or the pulse repetition rate depending on the mode of operation.