A display device comprising a number of light emitting diodes disposed in a matrix array, a switching element being connected in series with each of the horizontal (row) and the vertical (column) scanning lines; said array being scanned in such a manner that the column lines are scanned with a pulse consisting of a negative part and a subsequent positive part while the row lines which are always biased with a negative voltage of a value smaller than that of the said negative part of the column s...

A turboseparator for polyphase media comprising: a guide assembly, a working wheel, and collecting chambers installed near the working wheel periphery. The working wheel blades have a varying profile from the root to the periphery, this profile being of the turbine type near the root. The entrance angle of the profile near the periphery is not over 90.degree.. In a turbine operating with polyphase working fluid, at least one stage is substituted for by the turboseparator.

A semiconductor device having a semiconductor body comprising a first region of a first conductivity type in the form of a layer adjoining a surface and situated on a second region of the body, a thyristor having four successive zones of alternate conductivity types being provided in the first region. The device is characterized in that the thyristor is constructed from a first surface zone of the first conductivity type which is fully surrounded within the semiconductor body by a second surface...

Novel polymethine cyanine dyes are derived from certain enamines containing a cyclohexene ring having a reactive methylene or methyl substituent thereon. These dyes are spectral sensitizers for photographic silver halide emulsions and sensitize such emulsions up to wavelengths ranging about from 550 to 770 mu. Many of the dyes are useful sensitizers for the red to near infrared regions of the spectrum.

An aggregate material for road construction comprising sharp-edged hard particles bonded to the surface of the particles of a basic aggregate by a binder.

A timer device is arranged for electrical connection to equipment to be controlled, such as a movie camera, including a source of potential, such as a battery in operative association with driving means such as an electric motor. The timing device includes a time constant circuit of the RC type in which the capacitor is charged solely from the battery or the like in the equipment. The equipment is of the type having a pair of remote control terminals controlling a supply circuit connecting the b...

A router bit for use with a power driven spindle is adapted for the cutting of plastic, wood and certain soft metals. This router bit is formed with straight flutes in which the cutting edge portions are inserts of hardened material such as tungsten carbide. Each insert is formed and mounted in the body to provide a short flat face extending inwardly from the outer cutting edge to an arcuate concave relief formed in the face of the insert. This short flat face portion of the cutting edge is grou...

Process of treating fresh, cooked shellfish meat by pasteurization after treatment with aqueous solution of sodium chloride, antibacterial agent and strong organic acid. A novel product is produced in the form of a pasteurized shellfish meat, impregnated with the aforesaid solution and sealed from the atmosphere.

A conveying system for supporting rods in a festoon steamer in which a web of material is suspended in loops upon said rods which are travelling upon a horizontal track, a feed-in mechanism being provided at the entrance of the track for gradually advancing the rods and a second mechanism being operative at the end of the track for discharging one by one the advanced rods.

A diffusion membrane material for a specific ion electrode which comprises a polymeric resin and a substantially water insoluble salt of the ion to be detected in admixture therewith. A method of making a diffusion membrane material for a specific ion electrode is also disclosed. The method comprises the steps of mixing a polymeric resin with a substantially insoluble salt of the ion to be detected. The resultant mixture is molded and sintered to provide a bar stock and the bar stock is formed i...