Abstract: Dangerous packages, such as high activity nuclear packages, are placed in adjacent compartments (22) formed in the body (10) of transport packing. The compartments (22) are closed by individually closure plugs (28) and by a common cover (34) that works in cooperation with one face (17) of the body (10) with three seals in series. Connectors installed on the cover (34) and opening up between the seals, are used to make an inspection of the helium confinement. The steel inner casing (24) in each compartment (22) is doubled up on the outside with a copper weld free casing (50). This arrangement significantly improves the confinement inspection, enables a global helium inspection, and if necessary can be used to isolate an unsealed compartment (22).

Abstract: A clearing device for a centrifugal separator holds a cake on a filtering medium lining at least the perforated part of a rotating basket. The clearing device includes several clearing members which, when arranged at rest, are more or less parallel to the generatrices of the perforated wall of the basket and between this wall and the filter medium, are spaced angularly, each clearing member resting, via one of its ends, on one wall of the basket and being equipped, at the other end, with a control means capable of receiving a longitudinal compressive force which, by deforming the clearing members causes the formation of at least one convex projection which locally deforms the filtering medium. The clearing device also includes actuating means capable of coming into contact with the control means of each clearing member to shift it in the direction for forming the projection.

Abstract: A device for cooling containments, and particularly silos for storing irradiated nuclear fuels, comprising at least two rows of vertical tubes that clamps maintain applied against the wall to be cooled, the free space or housing which contains tubes being filled with a mass of a material ensuring good heat transfer. The ambient air may, by natural convection, traverse the tubes to dissipate the heat into the atmosphere.

Abstract: The device comprises a first wide-mesh cloth or screen which bears against the calender of a basket, at least one tight supple tube connected to a source of gas under pressure which is against the first cloth or screen, a second cloth or screen identical to the first covering the tube such that the tube is sandwiched between the cloths or screens, and a fine-mesh filtering cloth covering the second cloth or screen.

Abstract: A continuous decanter assembly suitable for processing nuclear materials comprises a mechanical assembly for driving a decanter bowl and an Archimedean screw. Sealing structure is provided to enable the decanter bowl and screw to be disconnected from the mechanical assembly and accessed by an operator without risk of nuclear contamination.

Abstract: Multi-Stage centrifugal extractors for separating two liquids of differing densities wherein each stage includes a decantation chamber which surrounds and receives liquids from a mixing chamber and wherein a portion of at least one of the separated liquids is recycled from the decantation chamber to the mixing chamber at each stage.

Abstract: A seal system for mounting a centrifuge within an opening between an area which is sterile and a contiguous area wherein the rotating basket of the centrifuge and its enclosure are accessible within the sterile area and are hermetically sealed with respect to the contiguous area.

Abstract: In order to dispense with any deformable protective bellows element in a centrifugal machine, the connection between the fixed supply pipe and the retractable pouring spout is disposed inside the containment envelope, while the spout with its support sleeve and its control mechanism are carried by a removable extraction stopper.

Abstract: This invention is directed to a manipulator for automatically supplying centrifuge machines for rotating bobbins of yarn in which the manipulator includes a carriage equipped with stop wings and tightening arms which grip the bobbins conducted to the carriage by a conveyor and wherein the carriage moves the bobbins to the baskets of the centrifuge machines and thereafter returns to its initial position while flaps mounted on the carriage cover the centrifuge machine as the bobbins are rotated therein and thereafter the flaps urge the bobbins from the centrifuge machines to a receiver plate.

Abstract: A device for loading and unloading a rotating basket in a centrifuge for spin drying bobbins of yarn wherein a hub is provided centrally of the basket and which guides an annular bearing plate which is vertically shiftable with respect to the basket so as to be selectively engageable with and supportive of a bobbin of yarn which is lowered into the basket, subjected to centrifugal action, and thereafter raised to a discharge position above the basket.

Abstract: In order to limit the horizontal displacement of the rotating assembly of the decanter at transitory speeds consecutive for example to an earthquake or other outside disturbance, a second series of shock absorbers is provided, disposed about the conventional shock absorbers and interposed, like the latter, between the bearing and the fixed frame, the operational characteristics of the shock absorbers of the two series being, of course, different so that those of the second series do not disturb the normal role of those of the first series.

Abstract: Installation for the centrifugal spin-drying or combined spin-drying and drying of fibrous or porous materials comprising, in combination, a spin-drier and a material carrier adapted to receive at least one pile of spools or similar of fibrous or porous materials, said material carrier being formed from a plurality of supports each adapted to receive a pile of spools or similar, disposed along at least one ring about a common axis formed by a central caisson, said spin-drier being equipped with a basket comprising a plurality of pockets or similar each adapted to receive a pile of spools or similar carried by a support of the material carrier, said supports being designed to be each housed in a pocket of the basket of said spin-drier and the common axis about which said supports are disposed in a ring being formed by a hollow central caisson adapted to fit into the central pivot of the centrifugal spin-drier.

Abstract: The invention relates to a bearing device for centrifuge, wherein the shaft of the centrifuge is supported by two elementary bearing support bodies mounted elastically on the frame independently of each other by elastic blocks and sleeves. Each body is fixed to a sleeve, these two sleeves, oriented towards each other, being connected by an elastic sheath so as to form a sort of hermetic oil chamber. The shaft drive pulley is of diameter less than that of the openings of the frame which surmount it, so that the assembly composed of the rotating pieces and the bearing arrangement can be extracted through the top by removing some screws, without actual dismantling.

Abstract: The present invention relates to a centrifuge with a turbine system for hydraulic control and the like, wherein the system comprises an annular member having a groove mounted to slide in a housing hollowed in the lower face of the bowl 4, this groove member being fast with a support wedged on the conical bearing surface of the shaft. The liquid arrives through the ports in a plate whose ports discharge into the groove. The liquid injected in 14 raises a movable bowl member and uncovers the ports for draining the sludge from the bowl. By overflow, a drain valve is suppled of the groove into another hydraulic path with liquid to open the bowl. The bowl 4 may thus be withdrawn from the shaft by being lifted without dismantling of its lid. The invention is applicable to centrifuges with hydraulic controls.

Abstract: A centrifugal separator including a bowl rotatable about an axis having a bottom and a cover separated by an intermediate flange portion having an annular row of discharge openings, a hollow piston-like member in the bowl axially moveable between a position in which it is sealed against the cover and a position in which it is retracted from the cover and communicates with said discharge openings, a liquid control system for moving the piston-like member between said axial positions while the bowl is rotating, and an hydraulic seal system including an annular gutter-shaped member around the inside of said intermediate flange portion and containing a dense sealing liquid such as mercury and an annular sealing member extending from the periphery of the piston-like member into the gutter-shaped member and sealed therewith by the sealing liquid, the sealing liquid and the control liquid interfacing near the gutter-shaped member and effecting a balance therebetween due to gravitational and centrifugal forces acting

Abstract: In an installation for the centrifugal extraction of one liquid by another, of the type comprising a series of elementary machines in each of which two non-miscible liquids are conducted through a common pump, then they are separated by centrifugation and are collected in two separate collector spaces, these two liquids passing through the installation in opposite directions, at least one of the liquids leaving at least one of the machines is transferred into the collector space of the other liquid in another machine of the series.

Abstract: In a continuously operating centrifugal separator of the kind comprising a bowl which rotates at a high speed and a conveyor screw which rotates at a slightly different speed within the bowl and co-axially thereto in such manner as to move the solid phase separated against the inner wall of the bowl, towards solid discharge ports provided adjacent the smaller base of a frusto-conical end portion of the bowl, at a lower radial distance from the axis of the machine than liquid discharge ports located adjacent the periphery of the other end of the bowl and which determine the formation within the bowl of a rotating liquid mass or pond having a cylindrical inner surface, the liquid product to be treated being fed axially into an inner chamber of the hollow hub of the conveyor screw from which it flows toward the annular space provided between the said hub and the inner periphery of the bowl through generally radial feed channels located about midway of the ends of the bowl, these feed channels open substantially