A sintered hardmetal (cemented tungsten carbide) product has a core made of a first grade of cobalt or nickel bonded cemented tungsten carbide with a surface layer of a second grade of distinctively different cobalt or nickel bonded cemented tungsten carbide. The first grade, or core, is generally a relatively tough (impact resistant or shock resistant) grade of cobalt or nickel bonded hardmetal w...

Viene indicato un dispositivo elettromagnetico a indotto tuffante, in particolar modo per una valvola elettromagnetica, con una bobina, con un indotto, il quale è disposto all'interno della bobina con possibilità di spostamento in senso assiale, e con un giogo il quale circonda la bobina. Inoltre viene indicato un procedimento per la fabbricazione di un tale dispositivo elettromagnetico. Un tale d...

The inspection system provides a number of optical images of the bottle mouth, directed onto at least one image detector, with subsequent image evaluation for acceptance or rejection of the inspected bottle. Pref. a mirror device (6) with a number of planar mirrors (9) is used for providing the optical images of the bottle mouth, received by the CCD image sensor of a video camera (5). The images a...

Un articolo avente fori laterali (11), ad esempio un distanziatore (10) per un radiatore per riscaldamento centrale, è costituito da materiale in particelle costipate in uno stampo comprendente una piastra (1) avente una cavità verticale (2), un punzone superiore (7) ed un punzone inferiore (4). Un'asta di anima interna (3) forma un passaggio centrale nel distanziatore (10) ed aste di anima latera...

PCT No. PCT/FR95/00824 Sec. 371 Date Apr. 14, 1997 Sec. 102(e) Date Apr. 14, 1997 PCT Filed Jun. 21, 1995 PCT Pub. No. WO95/35158 PCT Pub. Date Dec. 28, 1995The invention relates to a process for atomizing a dispersible liquid material or a mixture of dispersible liquid materials, characterized in that the dispersible liquid material (3) or the mixture is dispersed in the form of particles (7) by ...

Free-running moulding powder contains opt. modified suspension PTFE(s), trialkylamine oxide(s) (I) and opt. fillers(s). Also claimed is a method of producing the powder. Pref. the powder contains up to 75 wt.% filler(s), rest PTFE and opt. other usual constituents, esp. 0.2-1 wt.% (I) and 5-70 wt.% filler(s). (I) is of formula (IA): R<1>R<2>R<3>N -> O (IA) (where R<1> = 6-22C alkyl or a mixt. of t...

A multiple glazing unit comprises at least two vitreous material panels positioned in face-to-face spaced apart relationship, having a gas space (9) therebetween delimited by a peripherally extending spacer (3), a cordon of resin (6) securing the panels together. A fixing element (2) is immersed in the resin to constitute means for fixing the glazing unit to a support structure, the fixing element...

The micro-gyrometer is designed to detect rotation around a first direction (z). It includes a plate (1) which is orthogonal to the first direction, suspended w.r.t a fixed frame (8), and excited at its resonant frequency in a second direction (x) perpendicular to the first direction (z). Rotation around the direction (z) causes vibration of the plate in a third direction (y) orthogonal to the two...

E' descritto un differenziale del tipo ad ingranaggi elicoidali per veicoli comprendente un dispositivo distanziatore composito perfezionato avente una sezione esterna del distanziatore generalmente a forma di C per mantenere gli ingranaggi laterali in relazione distanziata assialmente, ed una sezione interna amovibile di anima del distanziatore per mantenere i semiassi in relazione distanziata as...

Coatings, in particular base lacquers, that contain at least one hydroxyl group-containing polyester are characterised in that (1) the hydroxyl group-containing polyester has a mean molecular weight Mw from 40,000 to 200,000 and a heterogeneity Mw/Mn > 8; (2) at least 50% by weight dicarboxylic acids or their esterifiable derivatives are used to produce the polyester, the proportion of phthalic an...

A lubricant and surface conditioner for formed metal surfaces, particularly aluminum and tin beverage containers, reduces the coefficient of static friction of said metal surfaces and enables drying said metal surfaces at a lower temperature. The conditioner includes (i) a water-soluble organic material selected from amine oxides and quaternary ammonium salts, ethoxylated castor oil derivatives, a...

This invention is directed to an efficient, mild, high yield process for the large scale synthesis of N-(4-hydroxyphenyl)-retinamide comprising the preferred steps of reacting retinoic acid with dimethylchloroformamidinium chloride to from retinoyl chloride which in turn is reacted with bis-(N,O)-trimethylsilyl-p-aminophenol to eventually form N-(4-hydroxyphenyl)-retinamide and to the novel use of...

In cold flow processing of metals, especially steel, coatings of transition metal halogenides, especially FeCl3, have proved suitable because they efficiently counteract cold welding problems. The coatings may be applied in the form of a melt or a saturated or diluted, aqueous solution of the transition metal halogenide. If a melt is used, it may be mixed with one or more common solid lubricants s...

A lubricant oil composition suitable for use as a tractor hydraulic fluid which comprises (a) a lubricating oil base stock which is a blend of a major amount of paraffinic mineral oil and a minor amount of a naphthenic mineral oil, and (b) a blend of a polymethacryalte viscosity index improver having a weight average molecular weight of 25,000 to 150,000 and a shear stability index less than 5 and...

Perfected pallet characterized because it is formed of a body in a single piece formed by molding in plastic, preferably with a mixture of polyethylene and --polypropylene, whose body has a quadrangular flat portion of reduced height from one of whose large surfaces emerge a series of perpendicular prismatic portions, parallel and facing each other, between which are spaces to introduce and couple...

Combined structure for the multi-staged biological cleansing of waste water containing organic dirt material, comprises three concentric ring chambers (5, 7, 12) formed by ring shaped intermediate walls (4, 13). The waste water in the inner chamber (5) is moved by a circulating unit (9), and the middle ring chamber (7) also contains a circulating unit (11) and is used for the anoxic denitrificatio...

A conveyor for waste has a waste feed shaft which is laterally connected to a horizontally divided conveyor channel. A screw conveyor being drivable by a motor is located in the longitudinal direction of the conveyor channel. The conveyor channel opens into a housing, in particular into a pyrolysis reactor, which by way of example is operated in conjunction with a low-temperature carbonization com...

The present invention relates to a process for continuous gas-phase polymerization of olefin(s) in a fluidized and/or mechanically stirred bed reactor, comprising a stage of drawing off the polymer out of the reactor, wherein a portion of the bed is transferred into a lock hopper and is then isolated from the reactor in the lock hopper for a period of 5 to 120 seconds so that a substantial amount ...

The present invention relates to an apparatus for gas phase polymerisation of olefins(s), essentially comprising a fluidized bed reactor and at least one conduit for drawing off polymer provided with an isolation valve and connecting the vertical side wall of the reactor to a lock hopper, the said conduit leaving the vertical side wall of the reactor while being directed downwards so that each par...

A catalyst, or a precursor thereto, comprises, as the active material or as a support therefor, a ceramic foam having a network of irregular passages extending therethrough, said passages having an average minimum dimension in the range 20 to 300 mu m, said foam having a total porosity in the range 40 to 85% and an apparent density of at least 0.7 g.cm<-><3>. The foam may be made by forming a neg...