Abstract: An apparatus for interlocking the top layer of corrugated cardboard cartons in a palletized load of said cartons while also providing edge protection, load containment, a flat even surface to stack additional palletized loads upon, and the ability to stack palletized units of boxed product while not damaging the stacking tabs used in produce corrugated cardboard carton designs. The apparatus has two sides at substantially right angles to each other that meet to form an edge. Material is removed from at least one side to create a plurality of slots for receiving the stacking tabs in the tops of the corrugated cardboard cartons. The apparatus is placed on the edge of the upper layer of cartons on a palletized load to interlock the cartons for greater load stability and to reduce load failure.

Abstract: A collapsible artist's water color palette comprising a plurality of rectangular trays non-fixedly attached to one another such that simple manipulation into a stacked, compact configuration for transport, or alternatively, a side-by-side, planer, configuration for mixing may be accomplished. In the stacked configuration, an upper tray serves as a lid for the tray below and, thus, prevents spillage of wet, runny paints and contamination of individual paint receptacles. A lid is provided to cover the uppermost tray when in the stacked configuration, and doubles as an additional working surface when in the planer configuration. Moreover, the subject invention provides a unitary structure so arranged with its integral components that paint receptacles and mixing surfaces may remain in an upright position during use and manipulation from one configuration to another, thus further reducing the possibility of paint spillage and contamination.

Abstract: A tool packaging container including a rectangular body portion having a recess at a central portion, a flange at a bottom, and a plurality of vertical dovetail grooves at both sides, and two rectangular extension containers connected with both sides of the rectangular body portion. Each of the rectangular extension containers is one-half as long as the rectangular body portion and provided at one side with a plurality of dovetails and at another side with a plurality of dovetail retainers. The dovetails of the rectangular extension containers are adapted to engage the dovetail grooves of the rectangular body portion and are adapted to engage the dovetail retainers of another one of the rectangular extension containers. Each of the rectangular extension containers is formed with a neck at an upper portion, a pair of lugs at one end.

Abstract: This invention relates to a combined minidisc box, especially a kind of combined minidisc box which can be connected with each other with its left, right, top and bottom sides. The combined minidisc box comprising an upper case and a lower case, wherein the lower case having flanges which can be fitted with grooves of the upper case, two sides of the upper case having respectively a continuous interval dovetails and dovetail slots. Each dovetail and dovetail slots of one side being faced to each dovetail slots and dovetail of the other side, at the top of the upper case having fitting holes and the bottom having fitting posts. The two continuous interval dovetails and dovetail slots of the combined minidisc box can be fitted and connected respectively with continuous interval dovetail slots and dovetails of other combined minidisc boxes.

Abstract: The use of two identical clips designed for use in holding stacks of JEDEC type trays for electronic devices in a manner to protect the devices comprises a platform supporting rails engagable with the end tabs on the trays to support the trays and the clips. A latch is provided to hold the clip in place and a handle is provided to grasp the stack of trays.

Abstract: Improved collapsible storage container (10) of the type having a pallet base, front and rear gates (15, 16) hinged with respect to the base (11), a pair of opposed side panels (17, 18) also hinged with respect to the base (11), the base (11) having a stub corner post (12) at each of its four corners, wherein each said corner post (12) is provided with locating means (22) at its upper end arranged to engage and locate a corresponding bottom corner portion of the base of an adjacent container when stacked thereontop, and wherein each side panel (17, 18) is provided with cut out means (25) at each of its two bottom corners, which are shaped and dimensioned so as to allow the side panel to be folded upwardly, unobstructed by the locating means, to its erect condition.

Abstract: A product display package includes a formed transparent display enclosure such as a blister-type container having a back section and a front section. Each section is generally a rectangular-dished element with sections having abutting edge flanges defining a box-like container for holding and displaying a product. The front section has a front wall including an outwardly embossed logo. The logo has a unique coloring for enhanced display. The back section has a flat back wall including a recess aligned with the embossed logo. In stacked relationship, the logo of a back package protrudes into the recess in the back wall of the abutting front package to provide a compact stacked assembly of the packages. A card insert within the back section abuts the back wall and top wall of the back section. The top wall of the front section has an inward projection abutting the edge of the card top wall to hold the card in place.

Abstract: A multi-pack container assembly comprises a plurality of containers and webs joining the containers, each web configured to include an area of reduced structural integrity for tearing a plurality of frangible ribs interconnecting adjacent containers and traversing the tearing area.

Abstract: An improved stackable container adapted to positively lock with a second container. The container includes a base and a lid for covering a storage space within the base. The base includes a downwardly depending rim having an inner diameter sized to fit over an upwardly extending cylindrical step on the lid of a second container, the downwardly depending rim and upwardly extending step including locking structures for positively locking a base of one container to a lid of another container. The locking structure preferably includes a plurality of multiple thread segments evenly spaced around the lid and base. There are preferably twelve thread segments evenly spaced around the step of the lid and within the rim of the base, the vertical height of the step being relatively small and the angle of rotation to lock the lid and base together is correspondingly small.

Abstract: A small container includes two hollow plastic parts detachably interconnected together. Each part includes substantially cylindrical side walls and opposite end walls which are disposed perpendicular to a longitudinal axis of the container. Rounded connecting portions are provided between the end walls and the side walls. A projection is provided on one end surface and a complementary recess is provided on an opposite end surface whereby a plurality of containers may be interconnected end-to-end. A plurality of ribs extending in the longitudinal direction of the container alternate with a plurality of grooves continuously about the entire periphery of the container whereby a plurality of containers may be laterally interconnected together by sliding the rib of one container into a groove of another container.

Abstract: A thermoformed bowl filled and sealed with a sample food product forms a sample package. The bowl is sized and shaped to the contours of and so as to nest upon the shoulders of a plastic one gallon jug or bottle. The package has a centrally located die-cut hole to lock under the bottle neck boss. Free samples of the food product can thus be distributed to accompany regular sales of one gallon plastic containers of milk.

Abstract: A container for holding a plurality of magazines, includes a first side wall having a first bottom edge, a first rear edge, a first top edge and a first front edge; a second side wall having a second bottom edge, a second rear edge, a second top edge and a second front edge; a bottom wall connecting the first and second bottom edges of the first and second side walls together; a rear wall connecting the first and second rear edges of the first and second side walls together; the bottom wall and the rear wall maintaining the first and second side walls in substantially parallel, spaced apart relation; the first and second top edges of the first and second side walls being unconnected with each other; and the first and second front edges of the first and second side walls being unconnected with each other; wherein side walls of a first such container fits within side walls of a second such container with a friction fit.

Abstract: A thermoformed bowl filled and sealed with a sample food product forms a sample package. The bowl is sized and shaped to the contours of and so as to nest upon the shoulders of a plastic one gallon jug or bottle. The package has a centrally located die-cut hole to lock under the bottle neck boss. Free samples of the food product can thus be distributed to accompany regular sales of one gallon plastic containers of milk.

Abstract: A blow-molded toothpaste tube being rectangular-oval in configuration for display without a carton, and having a bottom and top narrow, flat, parallel panels and wider front and rear panels for brand identification and indicia. The tubes are stackable horizontally on one of the narrow panels to a selected vertical height on a shelf.

Abstract: A stackable tray system used, for example, as an organizer tray system in offices, includes two or more trays spaced vertically from one another. Support elements are provided for separating the trays and for supporting the upper tray in each tray pair. Furthermore, the support elements, in combination with the upper tray in a pair and a slide retainer, permit the upper tray to be moved horizontally with respect to the lower tray to provide a cascading appearance. With the upper tray displaced horizontally from the lower tray, access to the lower tray is facilitated, both to add material thereto or to remove contents of the tray.

Abstract: A closure plug consisting of opposing frusco-conical sections to apply lateral forces to axially compress and radially expand o-ring means to seal the plug within an opening through a fire-rated barrier may support or enclose insulating materials filling all or part of the opening through the barrier.

Abstract: A bill payment center container is provided with removable trays so that the items desired for paying bills can be located in a single convenient location. A cover with a slot is provided so that when a bill envelope passes through the slot it is received by one of the trays.

Abstract: A stackable container having excellent resistance to impact breakage includes (1) a plastic tank for containing liquids having at least one opening in its upper end and upper and lower abutments extending around sidewalls, (2) a top member engaged to the upper end of the tank having a downwardly facing abutting edge resting upon said upper abutment and (3) a bottom member engaged to the lower end of the tank having an upwardly facing abutting edge resting upon said lower abutment and having a plurality of downwardly extending legs. Clip means cooperate with serrated areas on the tank and top member and with additional serrated area on the tank and bottom member to secure said top and bottom members to the tank.

Abstract: An electronic system having a plurality of electronic devices contained in a plurality of stackable enclosures is provided. Each of the plurality of stackable enclosures is stackable and interlockable together with another one of the plurality of stackable enclosures. Each of the plurality of stackable enclosures comprises a housing having a top surface and a bottom surface. A first plurality of projections are provided to extend upwardly from the top surface. The first plurality of projections are spaced to define a first group of grooves therebetween. A second plurality of projections are provided to extend downwardly from the bottom surface. The second plurality of projections are spaced to define a second group of grooves therebetween. Each of the second group of grooves corresponds to a respective one of the first plurality of projections. Each of the first group of grooves corresponds to a respective one of the second plurality of projections.

Abstract: A connector assembly for electrically connecting an electronic apparatus to a printed circuit board includes a matable socket connector and header connector. The socket connector includes a lower housing which supports the electronic apparatus and which is capable of containing an insulative curable potting compound. A plurality of electrical contacts is supported by the lower housing in electrical engagement with the electronic apparatus. A cover is supportable over the lower housing for enclosing the housing. The electronic apparatus is supported within the socket connector in position so that the curable potting compound may completely surround the electronic apparatus providing an environmental seal. The socket connector is insertable into the header connector supported on the printed circuit to establish electrical connection therebetween.

Abstract: A container system comprising at least two containers, wherein said at least two containers are each dimensioned to have a low external surface area to volume ratio, said system comprising connecting means between adjacent ones of the containers each comprising a tube adapted to fit within respective apertures in the containers to be connected and a sealing means surrounding said tube and adapted to be maintained in sealing engagement about the tube and apertures by compression between the containers joined by the connecting means.

Abstract: This invention relates to a container and in particular to one which mainly includes a body portion having a space provided with a first elongated member at the left side and a second elongated member at the right side on which there are a plurality of holes, a gate inserted into the groove of the first elongated member and having a projection on one end by means of which the cover may be moved to go along the curved groove to open or close the container, and a top cover having a plurality of pins adapted to engage with the holes of the body portion and a curved groove at the inner side to receive the upper edge of the cover, whereby similar containers may be horizontally or vertically connected together.

Abstract: An add-on compartment for a trash receptacle includes a open topped material receiving compartment having spaced apart front and back panels protruding transversely outwardly from one side of the compartment for receiving a trash receptacle between them. The panels extend outwardly sufficiently to overlie the walls of the trash receptacles so that the combination compartment and receptacle give the appearance of a unitary structure. A trash bag retaining lip is formed on the upper edge of the compartment and a depending skirt may be provided to cover at least the front wall and outer most side wall of the compartment to provide a smooth continuous appearance with the front panel and a trash receptacle to be received between the panels.

Abstract: A container stacking apparatus for use in supporting a pair of cargo containers in stacked relation on at least one first cargo container, the container stacking apparatus comprising an elongated frame adapted to be supported on the at least one first cargo container, the elongated frame including a mechanism for supporting the pair of cargo containers in end-to-end relation thereon, a mechanism for releaseably locking the frame down on the first cargo container, and a mechanism for releaseably locking the pair of cargo containers down on the frame.

Abstract: A stackable container (1) partially defined by two spaced apart side walls (3), a portion (5) of each said side wall converging inwardly toward the other side wall to define a surface profile on each side wall which is a mirror image of a corresponding part of the other side wall whereby like containers (1) can be stacked in an overlapping manner to form a closed packed array.

Abstract: Disclosed are blow molded multiple compartment plastic containers in one configuration having partition members between the compartments that initially form portions of a mold for the container. When molding is complete, the partition members form part of the container, with the molded plastic material of the container substantially surrounding the partition members. In another configuration the containers are modular, mating engagement members being formed in facing walls of separate container portions that are joined subsequent to molding. In this configuration, the container portions can be made detachable or permanently attached. Also disclosed are methods for molding the containers.

Abstract: A removable partition for dividing a container into compartments. In a first embodiment the partition takes the form of an upper paper disk and a lower foam disk. The edges of the partition are bent upwardly such that the edge portion of the foam will contact the interior of the container, providing a much better hold than just paper. In a second embodiment, the partition is formed of upper and lower paper disks. The disks are secured together in an area spaced inwardly from the edges, such that the edges of the disks are not connected. The edges may thus be slightly spaced and provide a wider area of engagement with the inner walls of the container, providing a better hold than a single paper disk.

Abstract: A foot plate and beverage container support assembly having a handle arranged on the bottomside of its base, to permit a user to conveniently carry food, beverages and utensils with one hand while permitting the user's other hand to be free eating or drinking from that held food plate and beverage container support assembly.

Abstract: A stackable, lightweight water dispenser bottle and method of using a plurality of such bottles in conjunction with a conventional water cooler is disclosed. The bottle comprises a generally parallelepipedal container body with rounded edges and corners with a plurality of dimples in a top portion and complementarily shaped protuberances on a bottom portion. The top portion has a central depression therein with a round hole surrounded by a cylindrical collar sealed by a screw-on cap. A neck portion rising from a central depression in the bottom portion terminates in an opening communicating with the interior of the container body and is sealed with a plastic cap after the water bottle is filled. A first such water bottle can be inverted and sealingly inserted into the opening at the top of a water cooler to partially fill the cooler.

Abstract: A suitcase assembly consisting of at least two suitcase components each of which having a generally rectangular configuration. Projections and/or recesses are provided on each of the suitcase components for detachably connecting the suitcase components in vertically overlapping relationship and also in side-by-side relationship. The projections and/or recesses for connecting the suitcase components have opposing flat surface portions and opposing unclaimed surface portions.

Abstract: A container (1), such as a yogurt or cream pot, is of tube-like form with a side wall of circular cross-section tapering towards the base (2) from an open mouth (3). The base and mouth comprise opposite ends of the container. A flange plate (4) surrounds the open mouth (3) and is provided with sockets in the form of through holes (5) punched through each of the four corners. The base (2) of the container has a central cruciform projection (6) and in the angles between each pair of arms of the cruciform a projecting plug or stud (7) is formed. The holes (5) and studs (7) comprise mutually interchangeable connection parts. A plurality of like containers (1) can, when empty, be assembled in a desired spatial relationship by interengaging a stud (7) in a hole (5). The building system so formed thus forms a knock-down constructional toy.

Abstract: A pipe plug of the type including a tie plate having a threaded bolt extending upward from a stepped circular base for mounted an elastic seal ring, a wedge ring and a cone permitting the cone to rotate on the threaded bolt to force the wedge ring to squeeze the seal ring to extend outward for sealing a tubing. The upper step of the stepped circular base of the tie plate is inserted in the seal ring when the seal ring is mounted on the lower step of the stepped circular base so that the seal ring can only be stretched outward.

Abstract: A desk organizer or the like includes a plurality of vertically stackable trays having partitions formed therein for storing articles of various sizes and shapes. Each tray has a hollow upright center post which is received within the center post of the tray positioned immediately on top of it. The posts have apertures formed in their distal ends and are so dimensioned that as the organizer is fully assembled each aperture is in closely spaced relation to the respective apertures in the posts of adjacent trays. When it is desired to manually separate particular trays to gain access to certain contents of the organizer, the user may insert the index finger of a single hand into the apertures and grip the desired number of posts, which allows one or more trays to be lifted and separated from the tray to which access is sought. A cover is provided with a knob-like projection having an aperture formed therein so that the cover may be gripped in a manner similar to the manner in which the trays are gripped.

Abstract: A fluid container assembly including one large, relatively narrow container having an orthogonally shaped recess or depression in a wall portion thereof, and two small fluid containers nested within the recess. The recess has means therein engagable with mating means on each of the small containers for retaining the small containers within the recess against accidental dislodgement and so that the external walls of the containers are flush. Each fluid container is provided with a tamper indicating insert such that tampering renders difficult withdrawing fluid.

Abstract: A stackable set of tray carrying units is disclosed wherein each unit has a floor member and a ceiling member. Each of the floor and ceiling members has downwardly extending feet, and the ceiling member also has upwardly extending split posts. The floor and ceiling members are connected together by vertical beams having upper and lower I-beam extensions which frictionally engage with the respective feet of the ceiling and floor members. The stacking arrangement is such that each of the split posts of the ceiling member is sized to frictionally fit within one of the feet of a floor member assembled on top of the ceiling member, with the web of the lower I-beam extension of a beam in an upper one of such units having an interference fit with the space defined by the split post of a lower one of such units.

Abstract: A modular cooler that is made of individually insulated modular cooler compartment units that can be stacked together to make a custom sized cooler for any occasion needed. The basic unit is a cylindrical bottom container having specific interlocking structure on its top edge. A tubular compartment unit having mating interlocking structure on its bottom edge is detachably engaged with the interlocking structure of the bottom container unit. A locking ring surrounds both of these interlocking structures and by rotating it a short predetermined distance the two units can be locked together or unlocked. One form of locking ring has a solid central wall that forms it into a compartment divider. Additional units can be stacked together by using additional tubular compartment units and locking rings. A disc-shaped top cover has interlocking structure on its bottom edge. O-rings are positioned between the interlocking structures to make the adjacent compartment watertight and airtight.

Abstract: An assembly created of multiple layers of semi-rigid trays. The size of the surface area of the assembly can be increased by use of side interlocking elements on each tray. These side interlocking elements do not consist of extra parts which require fairly dexterous manipulation, sometimes in the center of a large surface area. Additionally, these side interlocking elements are rotation symmetrical and self-centering, all of which enhances the potential for automated handling. The tray layers are separated by containers which are held by formations in the upper and lower surfaces of each tray. The formations in upper surface of the lower tray layer and the lower surface of the upper tray layer cooperate to hold the containers such that the containers touch each other along their sides and are maintained in a substantially vertical position, which is particularly suited for containers prone to bulging and creeping.

Abstract: A container (1), such as a yoghurt or cream pot, is of tube-like form with a side wall of circular cross-section tapering towards the base (2) from an open mouth (3). The base and mouth comprise opposite ends of the container. A flange plate (4) surrounds the open mouth (3) and is provided with sockets in the form through holes (5) punched through each of the four corners. The base (2) of the container has a central cruciform projection (6) and in the angles between each pair of arms of the cruciform a projecting plug or stud (7) is formed. The holes (5) and studs (7) comprise mutually interchangeable connection parts. A plurality of like containers (1) can, when empty, be assembled in a desired spatial relationship by interengaging a stud (7) in a hole (5). The building system so formed thus forms a knock-down constructional toy.

Abstract: A tray for packaging semi-circular split ring bearing halves is provided having a plurality of elongated compartments. Each compartment includes a herringbone-type of arrangement of ribs on the bottom wall thereof to receive bearing halves. The bearing halves are separated from one another by the ribs. Trays loaded with bearing halves may be stacked one upon the other with the compartments of one tray being nestable within compartments of a lower tray.

Abstract: An interlockable reusable container for a food product, especially for a leftover piece of pizza pie, made of a thermoplastic material comprising a pie-shaped base, two substantially flat side walls attached to the base meeting in a common vertex, one of these side walls having an exterior tongue member and the other having an exterior groove member which are shaped so that the reusable container is laterally interlockable with another reusable container, a rear wall attached to the side walls and the base and a removable lid having a lid panel which rests on the side walls and a plug member which fits in the top opening of the reusable container when the lid is in place on the container. The lid panel and base may have a similar tongue and groove system so that the reusable containers can be stacked compactly in stable vertical stacks.

Abstract: A food container comprises top and bottom members, with the bottom member including a lower base wall and an upwardly extending side wall. Spaced apart downwardly extending depressions are formed in the lower base wall, and each of these depressions has an inside wall surface spaced inwardly from the surrounding side wall. The inside wall surfaces of the depressions collectively define an outline, and the top member has a raised central portion the outline of which is substantially identical to but slightly smaller than the outline defined by the depressions. This relationship enables the raised central portion of the top lid member to interlockingly fit between the depressions when assembled food containers are stacked one above the other. The raised central portion of the top lid member has less height than the depressions which spaces the lower base wall from the raised central portion when assembled containers are stacked.

Abstract: A storage pack is provided comprising at least two stacked and nested trays each loaded with a plurality of semicircular split ring bearing halves. Each tray includes a plurality of elongated compartments each of which has a rib structure on the bottom wall thereof defining a herringbone-type arrangement. Bearing halves are loaded into each tray compartment on one edge thereof with the ribs separating adjacent bearing halves. The ribs are of less height than the width of the bearing halves so that when one loaded tray is stacked and nested on another, the bearing halves assume the vertical load without loading the ribs.

Abstract: There is provided an apparatus for a compartmentalized trash separation container which is compatible with plastic bags and used to separate garbage for recycling purposes, and further having a compartment specially designed for receipt of newspapers or the like. There is provided a retaining apparatus in which the plastic bags installed within the compartments of the container would drape over protruding lips around the compartments. A retainer member with a protruding edge arranged to substantially circumscribe the protruding lips of each compartment is aligned, pressed over the bag and locked in place. The locking mechanism, in one embodiment, is a frictional block arranged to press against the protruding edge of the retainer, and alternatively the lock comprises a ribbed protrusion arranged to lock within a ribbed receptacle.

Abstract: An oil change kit container holds packages of new oil to be purchased and, after the new oil is removed, holds the used oil and used filter removed from the vehicle and facilitates the collection and reprocessing of the used oil. The container includes a large recessed opening on the top through which the packages of oil are removed and into which the oil exiting the crankcase flows. The opening is sufficiently large to permit the container to be set below the oil plug and not be moved during the draining of the oil. The container also includes an indent to hold the new oil packages firm within the container during transit. A handle is provided in association with the indent for carrying the container. The container also includes feet on the bottom and feet receptacles on the top for permitting the containers to be easily stacked. The container is made entirely of plastic by conventional molding techniques.

Abstract: The disclosure relates to a system for stacking cases in a nesting relationship. A number of cases, each substantially identical to the other are configured to permit stacking in a nested relationship in a number of directions. Each such case includes corner brackets with recesses and protrusions which interact with complementary brackets on adjacent cases. Corner brackets in cooperation with other edge brackets also permit stacking in a nested relationship when the covers for these cases are removed and the orientation of the cases is shifted. A latching means is also provided to secure the cover in place without adversely affecting the latching mechanism.

Abstract: A stackable tray for holding a plurality of pie pans includes four like interconnected side walls and a horizontal platform joined to the side walls approximately midway of the height of the sidewalls. The platform is provided with circular openings each dimensioned to suspend a pie pan within the opening by the engagement of the peripheral flange at the top of the pan with the platform around the periphery of the opening. Centrally located hand hold openings are formed in each side wall and upper and lower stiffening webs extend across the upper and lower surfaces of the platform between the openings.

Abstract: Stackable crates of synthetic material for bottles, especially wine bottles, having a compartmental subdivision for the accommodation of one bottle each in one compartment, first supporting surfaces for stacking the crates one upon another in a vertical position, second supporting surfaces at at least two opposite side walls for stacking the crates in a horizontal position, with each compartment comprising portions of elastically shapable material adapted to be brought into engagement with the bottle wall at circumferentially spaced intervals, and with two sizes of crates provided, of which the smaller crates--measured outside--are half the length of the greater crates but the same width, and in that the second supporting surface are arranged in such a manner that the supporting surfaces of the smaller crates may respectively be supported by supporting surfaces of both halves of the side walls of the greater crates, and the greater crates may respectively be supported in the horizontal position while being re

Abstract: The invention concerns a multiple, especially two-part, plastic bottle carrier with divisions paralleling one wall, each half of the carrier being demarcated by an auxiliary partition with interlocking fasteners and a vertically displaceable bolt (18) that can be displaced by [handles] that pivot on the halves of the carrier with flank ends (211) that project beyond the pivots on the halves in recesses (186) provided therefor in the bolt. The invention consists in that a spring-loaded catch (e.g. 211 & 1911) is provided that allows the end (211) of the handle to snap into the recess (186) as the handle pivots into its horizontal locking position while overcoming the force of the spring even though the bolt has already been shifted out of its release position and into its locking position.

Abstract: A modular storage system is made from at least two stackable storage receptacles of one-piece molded plastic construction. Each receptacle has a plurality of T-shaped locking tabs formed integrally with the basket. Each tab is adapted to pivot from an as-molded position to a position in which it releaseably engages an overhead receptacle, as well as to a position in which it releaseably engages an adjacent receptacle.

Abstract: A microtest plate is characterized by a tray conveniently moulded of foam plastics, having a multiplicity of compartments and a multiplicity of individual wells fitted into the compartments, at least some of the wells preferably being moulded integrally with one another, and preferably being arranged in one or more rows.