A flotation machine comprises a cylindrical chamber having a tapered bottom to which there are secured a pipe for feeding a flotation pulp containing mineral particles of fine fraction, and a pipe for discharging gangue. Secured at the walls of the chamber is a trough for collecting froth concentrate and a group of pulp aerators, whereas arranged axially inside the chamber is a group of tapered sh...

Surfactants for conventional flexible polyurethane foam may be improved by the addition of a minor amount of an organic acid salt.

2090324 9300641 PCTABS00161 La présente invention concerne une installation pour l'aide à la gestion des ressources humaines d'un centre de distribution comporant: au moins un capteur pour le décomptage du nombre de personnes entrant dans le centre de distribution; des moyens (40) pour l'acquisition du nombre de personnes en attente devant chaque caisse; une unité de calcul (6) associée à un premi...

MEMBRANE SEPARATION PROCESS D#79,594-F Membrane separation process is improved by use,????????? as a support membrane, of (i) a polyacrylonitrile membrane on which at least a portion of the surface -CN groups have been hydrolyzed -COOH groups or (ii) a membrane formed of polyacrylonitrile and polyacrylic acid.

A system for maintaining a downhole instrumentation package in a roll stabilised orientation with respect to a drill string comprises an instrument carrier which is mounted within a drill collar for rotation about the longitudinal axis of the collar. An impeller is mounted on the instrument carrier so as to rotate the carrier relatively to the drill collar as a result of the flow of drilling fluid...

In a memory system comprising a plurality of memory units (10) each of which possesses unit-level error correction capabilities (20) and each of which are tied to a system level error correction function (30), memory reliability is enhanced by providing means (Fig. 2) for disabling the unit-level error correction capability, for example, in response to the occurrence of an uncorrectable error in o...

A semiconductor memory array comprises a plurality of memory cells (1) each having at least one storage capacitor (2), an addressing circuit (26. 29) which designates the location of each memory cell (1), data lines (6) which transmit data through connections to said memory cells and data writing and reading circuits connected to said data lines (6). The semiconductor memory has a multiple level s...

The improved corrosion-resistant steel plate with an organic coating comprises a steel plate having a zinc or zinc alloy plate layer which is overlaid with a chromate film which in turn is coated with an organic resin paint film. The organic resin coat comprises an epoxy resin having a dialkanolamine incorporated into its bisphenol A skeleton, an amino resin, and silica. The dialkanolamine combine...

A separation preventive pipe joint comprises a socket and a spigot inserted into the socket with an annular packing interposed therebetween. An annular gland connected to the socket has an axial packing presser projection and is internally provided wtih an annular receptacle groove. Arcuate engaging segments are incliningly disposed in a circular arrangement within the receptacle groove and retain...

Docket No.: 60SI-1472 of the Invention Alkoxy-functional RTV silicone compositions are provided containing improved adhesion promoters which are the reaction product of a silanolcontaining polysiloxane fluid preferably comprising (i) monoorganosiloxy; (ii) triorganosiloxy units; (iii) diorganosiloxy units; and, optionally, (iv) siloxy units; and B) an organofunctional-polyalkoxysilane containing p...

The disclosure describes an artificial venous valve which allows unidirectional flow. The valve is intended for Inserting into human venous system. It is designed to permit a centripetal unidirectional flow of blood by means of the movement of a plate which is inserted in a cylindrical or cylindroid support. The operation of the valve is actuated by variations in the pressure gradient on the upstr...

SUBSTITUTE REMPLACEMENT SECTION is not Present Cette Section est Absente

A method and apparatus for removing a pre-placed prosthetic appliance anchored in place in a bone recess by a cement mantle and conditioning the recess for receipt of a replacement appliance. The preplaced appliance is first pulled from the mantle of hardened cement holding it within the recess thus leaving a cavity within the mantle. A screw threaded post having nuts threadably engaged therewith ...

An upholstered furniture system for mounting on a horizontal surface. The system comprises spaced apart vertical arm members, each having an inner surface including back and front portions. Side support members are affixed to the inner surfaces of the arm members for removably supporting a seat support member. Support elements are affixed to the back portions of the inner surfaces of arm members a...

Piece goods trans-loading installation Installations for trans-loading piece goods in the form of load units (3) such as containers, returnable vessels, semi-trailers or the like between road and railborne vehicles (2) comprise a single or multiple storey store (5, 6) for the load units (3) on one side of a single or multiple track railway line (1), a single or multiple lane roadway (9) on the oth...

For use in the cleaning of the filter bags (3) by the back-pressure method, an air filter (1) is provided with a pivotable damper (15) which also comprises a passage (19) for the supply of clean air at the outlet (9) from the filter (1). The damper (15) is arranged in such a manner that in its open position for the outlet (9) it shuts the passage (19), while in its closed position it leaves said p...

ABR?G? DESCRIPTIF Le procédé de soudage d'au moins deux éléments en matériaux thermoplastiques comporte l'étape de chauffer, pour projection sur la zone de soudage, un courant de gaz de projection comprenant au moins 20% d'hélium, le complément étant un gaz neutre ou un mélange de gaz neutres. Pour les applications de soudage avec cordon de soudage, le gaz de projection est chauffé à une températu...

In a cell capacitor of a dynamic random access memory cell according to the present invention, an insulation film is formed on the surface of a fine trench formed in a silicon semiconductor substrate. A contact hole is formed in the insulation film in a region on the side wall of the trench. A polysilicon film is formed on the side wall of the trench in a hollow-cylindrical shape. A silicon layer ...

PCT No. PCT/DK92/00198 Sec. 371 Date Jan. 11, 1994 Sec. 102(e) Date Jan. 11, 1994 PCT Filed Jun. 25, 1992 PCT Pub. No. WO93/00274 PCT Pub. Date Jan. 7, 1993.A popular type of sales packing for sliced meat comprises a cup shaped lower part having an outstanding edge flange, to which is peelably welded a tight cover sheet as an original closure, while for the reclosing of the cup there is provided a...