Apparatus for separating solid particles from a liquid suspension and/or purification or leaching of solid particles, consisting of a cylindrical column (1) which near one end is provided with a rotatable scraper (4) for the disintegration of a washed compacted bed (2), an inlet (27) for wash liquid and an outlet (16) for the disintegrated particles, and contains near the opposite end of the colum...

Zur Verbesserung der Fertigung von Statoren (10) für Elektromotoren wird ein Werkstückhalter (1) vorgeschlagen, der in aufeinanderfolgenden taktunabhängigen Bearbeitungsstationen, analog zu dem bereits in dem CH-Patentgesuch Nr. 4557/83-7 beschriebenen Bearbeitungs- und Transportsystem für Rotoren, arbeitet. Jeder Werkstückhalter (1) ist portalartig ausgebildet und besteht aus zwei mit Führungspla...

Holz, das sich insbesondere zur Herstellung von Klangkörpern eignet, wird nach einem Verfahren vergütet, bei dem kurz vor oder während einer thermischen Behandlung unter Druck geringe Mengen reaktiver Bausteine duroplastischer Polymere in das Holz eindringen.; Wood that is especially suited for the manufacture of resonating bodies, is improved according to a process in which small amounts of react...

A monomode optical transmission fibre (1) is described, having a tapered end portion (5) on which a lens (10) is arranged. This lens is obtained by immersing the fibre end in a transparent liquid material (7) whose melting temperature is lower than that of the fibre materials and whose refractive index is substantially equal to that of the fibre core (2), and by allowing the drop which adheres to ...

A fluid paste is prepared containing cosmetic powder in a liquid ingredient. A container (1) having one or more compartments (3-6) with open top and bottom is arranged in overturned position on a moulding surface (14) with an interposed sheet of absorbant material (15). The fluid paste (17-20) is poured into the container (1) through the bottom opening and then dried to form a solidified pastille ...

Apparatus for cooling a work roll in a rolling mill for rolling metal strip, has a plurality of sprays arranged in closely spaced rows extending in the longitudinal direction of the work roll, the sprays spraying water onto the work roll surface in a manner such that the surface of contact of the cooling water of each spray on the work roll surface is oblong in shape and the longitudinal axes of t...

An image processing device for two-dimensional raster images is described. The receiving means thereof are followed by a sub-sampling circuit (28) for increasing the pitch of the raster received in accordance with an adjustable scale. To the sub-sampling circuit there are connected a buffer (30, 32) and a correlation circuit (36, 38) for comparing a number of columns of pixels with a reference ima...

A semiconductor device having a hetero-junction (3) between a semiconductor layer (2A,B) having a larger band gap and a semiconductor layer (1) having a smaller band gap, in which a bidimensional charge carrier gas (4) is formed, which is limited to a mesa-shaped part (5) of the layer structure. According to the invention, the sidewall (6) of the mesa extends to within the semiconductor layer (2) ...

Eine Lichtleitfaser auf der Basis von Siliziumdioxid mit einer deren Brechungsindexprofil zumindest im optischen Leitungsbereich bestimmenden Fluordotierung enthält mindestens eine den thermischen Ausdehnungskoeffizienten erhöhende Substanz, die zumindest im optischen Leitungsbereich gleichmäßig verteilt ist. Durch die gleichmäßig verteilte Substanz wird der Einfluß der Ziehkraft FZ (beim Ausziehe...

An apparatus and method are provided for fabricating cutting tools and tool cutting edges and for improving the structures of cutting tools, particularly the cutting edge portions thereof. In one form, the method involves subjecting the edge EI or edges of a cutting tool 10 such as a blade or other form of cutting tool, to the intense heat of a radiation beam such as an intense light beam generate...

Fe-Co spinels, containing low levels of cobalt, which are fully reduced/carburized ex situ, provide exceptionally high activity and selectivity in the conversion of CO/H2 to C2-C20 alpha olefins in both a fixed bed and slurry type process. These unsupported iron-cobalt catalysts maintain good activity and selectivity under low pressure reaction conditions.

A one-piece collapsible stand, especially for a book, made of suitable material, like corrugated cardboard or polypropylene, by stamping or molding. In its collapsed configuration, all components of the stand are co-planar. The stand comprises a frame-like bottom plate (2), to which a center leg (7) and two side legs (11, 13) are connected by integral hinges (9, 15, 17). Complementary latch notche...

A delayed coking process in which the coker furnace feed is free of conventional heavy recycle. Elimination of this material from the coker furnace feed produces, based on fresh feed to the process, increased liquids and decreased coke. Coker furnace feed (10) is initially combined with a diluent hydrocarbon (50) having a lower boiling range than conventional heavy coker recycle (64) and then tran...

Bis-(alpha-alkylbenzyl)ethers are obtained by the reaction at elevated temperature of the corresponding alpha alkylbenzyl alcohol in the presence of an acidic clay catalyst having a surface area of at least 100 m<2>/g, quenching of the catalyst and recovery of the desired ether by distillation directly from the reaction mixture containing the quenched catalyst. Where the starting material is alkyl...

A thin-film polymer-blend membrane comprises a blend of an inorganic compound and a compatible organic polymer. The inorganic compound may be a heteropoly acid or salt thereof, a phosphoric acid or sulfuric acid and is usually present in the blend in an amount of from 1% to 70% by weight of the blend. The blend may have electrically conductive particles added and/or may be supported on a porous su...

A method for modifying the catalytic activity of a crystalline zeolite having a constraint index of 1 to 12 and a silica-to-alumina ratio of 30 to no greater than 300, comprises contacting said zeolite with gaseous boron trifluoride under conditions effective to reduce the alpha activity of the zeolite.

The invention relates to a shoe (10) with a tongue (12) and laces comprising: (a) retainer means (16; 46); (b) said tongue (12) having a front face (28) and a rear face (30); (c) said retainer means (16; 46) being affixed to the front face (28) of said tongue (12); (d) a slot (26) extending entirely through the front face (28) and the rear face (30) of said tongue (12), said slot (26) being disp...

A method for enhancing the shape selectivity and adjusting catalytic activity of a crystalline zeolite, including a highly siliceous zeolite, is disclosed. Such a method involves contacting the zeolite with an ammonium fluoride solution in the absence of an aluminum source, optionally contacting the treated zeolite with a warm aqueous solution of an ammonium salt and then calcining the fluoride an...

A method of making an imide resin composition comprises: (a) mixing at least one lactam and/or amino acid (component A) with at least one aromatic dianhydride (component B) in a mole ratio of A:B of up to 10:1, (b) mixing a solvent with the mixture from step (a) and heating the resulting mixture, and (c) mixing at least one diamine (component C) with the product of step (b) to give a solution of t...

This invention relates to a cosmetic liquid cleanser for the treatment of blemished, scarred or inflamed skin with acne (comedones). In particular there is described a cosmetic liquid cleanser comprising boric acid or borax 0.1-5.5% (by weight), camphora 0.02-1.2% (by weight), ammonium hydroxide 0.001-1.1% (by volume), a peroxide 0.05-2.0% (by volume) and optionally salicyclic acid 0.1-5.5% (by we...