Abstract: A plastic container for the storage and transport of liquids, particularly aggressive liquids, comprising a practically rectangular bottom, a top wall with a filling or pouring hole, and standing walls which each connect to the circumferential seam of both the bottom and the top, and four standing edge strips each connecting two walls, which container is manufactured by the blow-molding process, wherein the standing wall portions have a convex form, wherein either the standing edge strips widen at the top and the bottom and, as seen in a cross-section running parallel to the bottom, the standing edge strips have a radius of curvature equal to or greater than that of the standing wall portions to which they are connected.

Abstract: A device for connecting at least a discharge tube and return tube to a bung connection of a container for liquids and the like, said connection being embodied with inner screw thread, which device comprises a cylindrical insert with screw thread arranged on the cylinder outer wall and co-acting with the bung, in addition to a bottom provided with at least two openings, a tube connecting bung for placing with the lower surface on this bottom and provided with passages for the discharge tube and return tube aligned with these openings, and a clamping piece for fixing the connecting bung in the cylindrical insert via connectors wherein there are arranged lugs placed in a determined pattern and recesses receiving these lugs, wherein the clamping piece is connected non-slidably in axial direction to the bung but freely rotatable relative thereto, and wherein the connectors in the insert are arranged at a distance from the bottom in order to form a chamber, the recesses are placed above the chamber in the insert an

Abstract: A device for closing a cover onto a container, wherein the cover and the container each have a protruding flanged edge which come to lie against each other in the closing position and wherein a hook-shaped cam connected to the cover co-acts with a counter-cam connected to the container for the purpose of locking the cover onto the container, wherein both flanged edges have continuous slotted holes in a corresponding pattern, wherein a wedge-shaped hand-tool can be placed into two mutually registering holes in the flanged edges to turn the cover in relation to the container, such that the hook-shaped cam connected to the cover comes into engagement with the counter-cam, whereby with a simple tool all locks are placed simultaneously in or out of engagement during closing or release of the cover.

Abstract: A device for connecting at least a feed off and return tube to a bung-hole of a container for liquids and the like having threads at its inner periphery, said device comprisinga cylindrical insert having threads at its outer periphery co-operating with the thread of the bung-hole, and a bottom part provided with at least two orifices,a tube mounting having a lower surface to be placed on the bottom of said insert and provided with ports being in communication with said orifices of the insert, anda clamp means to clamp said mounting into said insert,wherein the tube mounting and the insert are provided with lugs and co-operating recesses located according to a certain pattern, wherein a recess is arranged in the wall of an orifice debouching in the bottom of said cylindrical insert, and the co-operating lug protrudes axially out of the tube mounting or vice versa, such that with only two lugs a large number of coding possibilities is provided for.

Abstract: Cover for a waste container consisting of a cover plate (3) with peripheral wall which fits onto the standing upper rim (2) of the container, in which cover plate is recessed a circular opening (4) which is closable by a circular lid (7), wherein an outer peripheral wall of the lid and the inner periphery of the recess have co-acting cams for locking the lid in the recess, wherein the cams (23, 24, 60, 62) are disposed in different levels or are elongate and are disposed sloping relative to the line of symmetry of the lid such that an opening is formed between the one end of a cam and the other end of the adjacent cam, which opening serves for passage of the co-acting cam, wherein the axially oriented lower surface of the one cam in addition to the opposite axial surface of the other co-acting cam have indentations for defining different closing positions of the lid in the cover plate, whereby one or more intermediate positions of the lid in which the lid can be removed, and an end position in which the lid i

Abstract: A method and device for manufacturing in accordance with the blow-moulding process a container with connecting bottom, top and side walls from plastic material, wherein a parison B is arranged at predetermined temperature in a closable open mould 1, the mould is closed, pressure medium is fed into the parison B and the finished container is removed from the mould after cooling and opening, wherein prior to closing of the mould the parison is held around at least two disc-shaped elements 5,6 which are placed at a mutual interval and which are clamped fixedly between the mould elements when these are closed prior to pressure medium being supplied, and wherein the clamping action is exerted in axial direction of the parison in order to enclose the discs in the bottom and top walls 23 for forming of the container 1, such that the discs lie directly against the top and bottom wall of the container, and an element 31 like a stirring member extending over the full length of the container can be arranged between thes

Abstract: A plastic container with a bottom and, connecting continuously onto the edge thereof a standing wall of random shape defining an upper circular edge portion on which can be placed a cover provided with a peripheral groove for receiving the edge portion, the cover and the edge portion being provided with co-acting locking elements. The locking elements include on the one hand by a number of L-shaped locking members distributed uniformly over the periphery, one leg being fixed to the cover or to the edge portion of the container such that it is oriented perpendicularly to the bottom, and on the other hand by an outward pointing lip on the edge portion or the cover and against which the other leg of the locking member can be placed.

Abstract: A stackable plastic container includes a hollow body formed of a base, upstanding side walls connected to the base and a top wall with a filling and/or pouring neck, the peripheral edge of the top wall connecting onto the side walls at a shorter distance from the base than the filling and/or pouring neck, and a stacking attachment piece which has a lower bounding plane fitting onto the top wall as well as an upper surface complementary to the base of the hollow body and lying above the filling/pouring neck. Because the filling/pouring neck lies higher than the peripheral edge of the top wall, 100% emptying of the container is always gauranteed. The attachment piece enables stacking because the space between the top wall of the hollow body and the base of a hollow body of another container above it is occupied by the attachment piece.

Abstract: A container, particularly suited to storing sensitive products such as contaminated waste, for example hospital refuse, the container 1 having a base with adjoining upright wall members 4, whereby the open top bounded by the upper edges of the wall members can be closed by a cover 5, whose rim is supported by the upper edges of the wall members, wherein the rim of the cover displays a groove or channel 6 which can accommodate the top edge of the upright wall members, whereby the rim of the cover and the upper edge of the container are provided with integral locking means 8,9,10 for permanently fixing the cover 5 to the container 1, and a sealing means 7, 12 is fitted in the channel, to close the container temporarily while permanent locking of the cover is easy to perform manually, and, moreover, can be confirmed visually.