Presenting a plurality of characteristics by presenting each characteristic using a symbol which per se identifies the characteristic by three concurrent visual impressions (quantity, tone, and extent) and is adaptable for use with any desired grey or tone scale.

In the production of a substitute leather material, a laminate of a nonwoven batt needled to the backside of a knit or woven fabric is often used as a substrate or support. During needling, loops and strands of the batt are drawn through the fabric by the needles, resulting in a large number of fiber ends and loops projecting from the surface and forming a visible linear pattern. The surface of the fabric is brushed at an acute angle to the pattern of the projections to mask the pattern and leve...

A toner composition comprised of a resin and a pigment coated with a nitrogen containing compound thereby causing a change in the charge characteristics of the pigment, the nitrogen containing compound being selected from the group consisting of (a) quaternary ammonium compounds of the formula: ##STR1## wherein R is hydrogen, hydrocarbon radicals containing from 1 to about 22 carbon atoms, or mixtures thereof, and A is an anion selected from sulfate, sulfonate, nitrate, borate, chlorate, and hal...

A method for altering the characteristics of liquid telechelic polymers by means of reducing the reactive group content and adjusting the viscosity of a given liquid telechelic polymer. This is accomplished by means of a two stage process which comprises reacting some of the polymer's available reactive groups with a difunctional reactant and adding a diluent to produce a final composition of desired viscosity and reactive group content.

In apparatus for measuring reaction and/or diffusion of particles suspended in a fluid, which apparatus includes a supply tube for supplying a stream of the particle-containing fluid, a tapered tube surrounding the supply tube for providing a first entraining fluid stream and for encasing the particle-containing fluid in the first entraining fluid stream for the purpose of hydrodynamically focusing the particle-containing stream into a thin stream enclosed by the first fluid and in which the par...

A plurality of sound passages connect cavities on both sides of the edge portion of the diaphragm in a horn type loudspeaker, the passages having a length less than the half-wave of the high reproduction threshold frequency of the loudspeaker.

The method for imparting permanent press characteristics to textile articles without using textile resins and textile resin catalysts includes applying to the textile article, a urethane acrylate prepolymer or an epoxy acrylate prepolymer or an acrylated polyester prepolymer or a water soluble monomer having a molecular weight less than 300 and selected from the group comprising acrylic acid, methacrylic acid, esters and substituted esters of acrylic acid and methacrylic acid and amides of acryl...

A circuit for modifying the color characteristics of a video signal by deriving a luminance signal which may have certain characteristics stressed, deriving color control signals according to the color system being used, multiplying the luminance signal by the control signals to derive two luminance control signals, and using the luminance control signals to modulate two respective quadrature-related carrier signals to derive a corrected video signal.

A frequency characteristics-controlling device which comprises an operational amplifier provided with two input terminals mutually bearing an inversion-noninversion relationship with respect to an output signal; a bridged-T circuit consisting of resistors and capacitors, the input terminal of said bridged-T circuit being connected to the inversion input terminal of said amplifier and the output terminal of said bridged-T circuit being connected to the output terminal of said amplifier; a first g...

The temperature characteristics of a motor which has a ferrite permanent magnet has been improved. The present motor comprises a stator assembly having at least a yoke for providing a magnetic path and a coil wound on said yoke, and a rotor assembly rotatably inserted in said stator assembly, having at least an elongated spindle rotatably supported by said yoke, and a cylindrical permanent magnet made of a ferrite material pierced by said spindle and being symmetrical wth respect to said spindle...