Abstract: A hand-held container for paint and painting implements. The body of the paint container includes an internal reservoir for holding paint and a magnet housed within the body for securing a paint brush or the like within the reservoir. An automatically adjusting, flexible handle that includes a living hinges provides a means for holding a person's hand against the exterior of the body. The paint container also includes a body that is dividable into multiple compartments. A textured surface covers a portion of exterior of the handle and the body and creates a non-slip surface useful for gripping the container. A portion of the container is shaped in a manner that allows the container to function as a pitcher for dispensing fluids such as paint. Stabilizing legs formed on or attached to the front portion of the container allow the container to be also be used as a paint tray.

Abstract: An electronic pill dispenser includes a container and a cap removably attached to the container. Components of the pill dispenser include a power source, pill dispenser circuitry, a real time clock, a counter, a display, a dispensing mechanism, a sensor, a visual indicator, an audible indicator, an input/output interface, an input output port, and a communication bus electrically interconnecting the components. The pill dispenser may also include a physical indicator, a locking mechanism, a transceiver, an antenna, and a modem. The pill dispenser enhances patient compliance for following through a particular drug regimen by offsetting negative effects of memory loss and other cognitive dysfunctions, attenuation of special senses, poor eyesight, lack of patient education, etc. The pill dispenser also helps the mentally unstable. The pill dispenser reminds users and dispenses pills to authorized individuals at appropriate times, and is economical and convenient.

Abstract: A gravity-feed dispenser includes an internal blocker assembly to prevent folded sheet from falling away from the dispensing aperture. A preferred embodiment includes a spring biased blocker arm which cooperates with a spring biased guide plate to maintain the napkins in position throughout dispensing of the stack, especially when the stack is depleted and of insufficient weight to urge the remaining sheets into position. In a preferred embodiment, the dispenser is provided with a convertible support, suitable for mounting the dispenser on either a wall or a countertop with a quick release mounting bracket.

Abstract: Disclosed is a candy storage and dispenser device. A multi-compartment dispensing device offers a unique device for storing and dispensing candy. Accordingly, multiple types and/or colors of candy may be contained in a transparent housing to create a very colorful presentation. Any number of candy types, including powdered, beads, pellets and the like, may be stored and dispensed with the multi-compartment device. The compartments are joined by a series of apertures which may, or may not, be regulated by a movable barricade. Then, when desired, the multiple candies are dispensed through the series of compartment apertures and a dispensing aperture. One version comprises a flute-shaped device having an operational mouthpiece.

Abstract: A product container configured to be magnetically affixed to a support surface to contain and dispense a product in a location adjacent to the support surface includes an enclosure configured to contain the product and to provide for dispensing of the product therefrom. An access opening is formed in at least one side of the enclosure, the access opening being configured to provide access to the product to allow an individual to withdraw the product from the enclosure. A magnet is re-usably attached to the enclosure and is configured to magnetically affix the enclosure to the support surface. The magnet has indicia disposed thereon to convey information relating to the product.

Abstract: A system for selectively supplying either a first or second diluent to a beverage dispensing valve is characterized by a manifold having first and second diluent outlet ports. Two different selection fittings plug, one at a time, into the manifold outlet ports. One, a first diluent selection fitting, when plugged into the manifold outlet ports delivers the first diluent from the manifold first diluent outlet port to the beverage valve while simultaneously closing the manifold second diluent outlet port. The other, a second diluent selection fitting, when plugged into the manifold outlet ports delivers the second diluent from the manifold second diluent outlet port to the beverage valve while simultaneously closing the manifold first diluent outlet port. The two selection fittings are keyed to connect with the manifold in one orientation only, so neither can be used to serve the purpose of the other.

Abstract: A dual service system and method for selectively compressing and dispensing methane, hydrogen, and variable mixtures of methane and hydrogen for use as a gaseous fuel. The use of an in-line gas density meter, hydraulic intensifier, pressurized gas cooler, optional intermediate storage and multiple dispensers are disclosed. An inline gas density meter is used in combination with a programmable logic controller and a control valve on the hydrogen supply line to create a closed feedback loop for selectively controlling the hydrogen content of the resultant pressurized fuel gas.

Abstract: Dispensing apparatus is provided for dispensing viscous product from containers (10) of product, usually by extruding product from a container outlet. Product is discharged by a plunger (13) which causes product to be discharged and the plunger is operated by a drive arrangement having a linear actuator (15) by which the plunger is moveable. The linear actuator uses an electric motor as the prime mover and the motor's rotary motion is converted into a linear motion of the plunger. By the use of a linear drive it is possible to achieve constant velocity of movement of the plunger independent of the resistance to movement, within the predetermined limits. The movement of the plunger can be controlled according to the resistance encountered. The apparatus also includes means for removing containers from their seating after discharge.

Abstract: Apparatus (104) for dispensing material produced by a chemical reaction between a first chemical reagent and a second chemical reagent. The apparatus comprises injection means (306) configured to produce a jet of the first chemical reagent and a jet of the second chemical reagent such that the jets collide to produce the material. The apparatus further comprises a storage chamber (317) and a closing device (321). The storage chamber is arranged to provide temporary storage space for the material, and it has an inlet for receiving said material and an outlet (319) for dispensing the material. The closing device is moveable between a first position in which the material is prevented from passing through the outlet of the storage chamber, while allowing material to be received into the storage chamber through the inlet, and a second position in which the material is allowed to be dispensed through said outlet.

Abstract: A dispensing device for fluid substances includes a receiving element for receiving fluid substances, formed of at least two rigidly interconnected containers with adjacent outlets on the front sides thereof, a mixing nozzle which is connected to the receiving element by a mixing nozzle holder and which is fluidically and conductively connected to the outlets, and a pressure-producing means for ejecting the fluid substances through the outlets. The mixing nozzle holder is a detachable catching closure.

Abstract: A product dispenser is used for compelling a flowable product from a package. The package is positioned within a container that may be coupled to a base member that slides in and out of a housing so that the container may function as a drawer. An extruder member compresses the package against the bottom wall to compel product therefrom. A retention device secures an end of the package in the container and prevents the package from becoming bunched up within the container. By doing so, the retention device helps ensure that the maximum amount of product is compelled from the package by the time the extruder member reaches its terminal position.

Abstract: A bag-in-box beverage container and dispenser is provided, incorporating an outer box fabricated preferably from corrugated paperboard material, and an inner liquid containing bag, fabricated from a suitable material. The outer box has two pairs of opposing side panels, and at least one diagonal corner panel. One of the side panels has an openable structure for permitting access to the interior of the box, to enable a consumer to grasp and withdraw the dispensing fixture of the inner liquid containing bag, and capture it within the openable structure. In embodiments having more than one diagonal corner panel, at least one of the diagonal corner panels is larger than at least one of the other diagonal corner panels, to permit the container to be tipped onto that elongated diagonal corner panel, for facilitated dispensing of the liquid contained in the inner bag.

Abstract: The proportioner (10) has a variable speed controlled DC motor (12) having a gearbox (14) and crankshaft (16) at either end which are connected to reciprocating piston pumps (18). The outputs (18a) of the two pumps (18) are fed to a manifold (22) where the pressure of each output is measured. The user sets a setpoint pressure (e.g. 1000 psi) and the controller (26) then compares the pressures of the two components and controls the higher of the two relative to the setpoint. Ratio assurance is monitored by continuing to look at both output pressures. If one side falls below a predetermined percentage of the setpoint (50% in the preferred embodiment), an alarm may be raised or operation stopped.

Abstract: The invention relates to a device for dispensing a mixed multi-component compound from a cartridge. The device has several containers that house the components and a mixing nozzle. The device is characterized in that it comprises a holder for the mixing nozzle that is connected to a holder for the cartridge. The former holder allows the nozzle to be attached to the cartridge.

Abstract: This invention provides several iterations for dyeing individual hairs or hair tufts, and comprises a body with a dye cavity in which one or more dye partitions can be filled, where dye materials are pressed out through screw drive or compression means, and where the dye materials are protected from air until extruded, such that unused portions can be stored rather than thrown away. In a preferred embodiment the dye cavity contains dye partitions for dye material and developer, which are forced by pressure into a mixing spiral which mixes them together and applies the active mixture to a person's hair through either a top attachment or pincers, both of which are constructed of spongy material which soaks up the dye mixture from the mixing spiral. The invention also provides a latex tube which prophylactically isolates the dyed hair such that the dye does not spread in an undesired manner.

Abstract: A device for dispensing a multicomponent composition comprising a mixture of different fluid components includes a first and at least a second fluid component inlet. The device also includes a mixing area located downstream from the fluid component inlets and an outlet extending from the mixing area. Each of the fluid component inlets is adapted to communicate with a source of a different fluid component. The mixing area is adapted to receive a flow of a first and at least second fluid component. Within the mixing area, the flow of the first fluid component is disrupted to allow mixing with the flow of a second fluid component to form a flow of multicomponent composition. The mixing area is further adapted to disrupt the flow of the multicomponent composition before the flow of the multicomponent composition exits through the outlet.

Abstract: An apparatus and process for mixing and depositing a strand reinforced concrete mix at a job site from a concrete delivery truck including a mixing means on the truck for mixing separate concrete ingredients at a job site, which truck further includes a fiber strand chopping device on the truck disposed and adapted to introduce chopped fiber strand lengths into the separate concrete ingredients and water and deposit the mix selectively at the job site without clumping and grouping of the fiber strand lengths in the mix.

Abstract: A container (3) has a first part (11), a second part (9) hinge (13) through which the first and second parts are hingeably connected so that the parts are hingeable relative to one another between a first position which places the container in a closed state and a second position which places the container in an open state. The first and second parts are also pivotally connected (A-A) so that the parts are able to be pivoted relative to one another to different angular positions.

Abstract: An apparatus attachable to a bag containing a bulk particulate material and having a discharge spout for dispensing material from the bag generally consisting of first and second annular clamping members displaceable axially between a first, spaced apart condition permitting a portion of the spout to be drawn in position therebetween, and a second, adjacent condition clamping the spout portion position therebetween, and means for releasably retaining the members in the clamping condition.

Abstract: A container cartridge for a beverage dispenser includes a bottom wall, a side wall and a top wall having a spout. The bottom wall, the side wall and the top wall, including the spout, are integrally formed of a polyethylene. The side wall is sufficiently thin so as to be foldable. Thus, after use, i.e. when the container cartridge has become empty, the container cartridge can be collapsed by folding the side wall. The thus collapsed container cartridge can be efficiently transported.

Abstract: A pump-action nozzle is described. The nozzle includes an internal chamber and an outlet through which fluid is dispensed and ejected from the device. The outlet has an outlet valve configured to open and permit fluid to be dispensed from the chamber only when the pressure therein exceeds a predetermined minimum threshold pressure. The nozzle also includes an inlet through which fluid can be drawn into the chamber. The inlet has a valve configured to open and permit fluid to be drawn into the chamber only when the pressure within the chamber falls below the external pressure. The body of the device includes a base portion and a housing portion, together defining the internal chamber of the device and being slidably mounted to one another such that said housing portion can be slid towards the base portion to reduce the internal volume of the chamber.

Abstract: A fluid dispenser has an adjustable size dispensing orifice. It includes a fluid dispenser container having a hollow inside for storage of flowable material, the container having a top with a fluid outlet and having an adjustable size dispensing orifice unit connected to the outlet. It also includes the aforesaid adjustable size dispensing orifice unit which has a base member with a dispensing orifice connected to the containers at least one shutter, and a shutter movement ring connected to the shutter and rotatably connected to the base member. The shutter movement ring has a first position and a second position and adapted for rotation to open and close the shutters. The shutter(s) have travel pins that are either integrally formed as part of the shutters or are inserted into a leg of the shutters. The travel pins extend into the shutter movement ring and the base member. One of either the base member and the shutter movement ring has a radiant travel guide and the other has a non-radiant travel guide.

Abstract: A piston stroke limiter provided in association with a positive displacement pump bottle has a piston restriction clip that may be selectively secured to the piston of the positive displacement pump. The height of the clip limits the stroke of the pump so that less fluid is dispensed from the positive displacement pump bottle than would be dispensed if the clip were removed. A protective overcap is provided in preferred embodiments to protect portions of the positive displacement pump during shipping.

Abstract: A self-contained viscous liquid dispenser with a spray pump mechanism includes a housing defining an internal liquid reservoir. A spray pump mechanism is configured with the housing and includes a horizontally disposed pump chamber fitted through an opening in the housing to extend into the reservoir. A pump cylinder is slidably disposed and retained in the chamber. Upon actuation of the pump cylinder, a valve and spray forming mechanism converts a liquid stream expelled from the pump chamber into a spray.

Abstract: A liquid cosmetic product dispenser comprising mainly a reservoir, an internal piston and an applicator nozzle provided with an end valve, characterised in that the said reservoir consists of a base provided with an axial rod on which the said piston can move longitudinally by rotating the said base in relation to the said nozzle.

Abstract: The invention relates to a spray can which is made of metal and which is ergonomically designed in order to ensure a secure hold of the can when spraying. This spray can comprises a lower can portion and an upper can portion, the lower can portion containing a bottom and being of almost cylindrical configuration, so that a cross section of the spray can in this portion is circular. The upper can portion contains a shoulder area and a can opening with a collar for an insertable spraying system from which the contents of the can are discharged. In order to obtain an easy-to-handle spray can which is ergonomically shaped and presents no drawbacks with regard to safety, it is proposed that the upper can portion additionally contains a shaping area, which may also extend above the shoulder area. A cross section in the shaping area of the spray can is configured differently than the almost circular cross section of the lower can portion.

Abstract: A mechanical device for attachment to an aerosol can to allow for holding the can with a comfortable handle, and to facilitate controlled sprayed dispensing of the contents using a trigger-type actuator. An extension pole for attachment to the device is provided for use in applying sprayed substances in high or difficult to reach areas. The extension pole further includes a trigger extension mechanism that enables the operator to accurately control the trigger of the aerosol sprayer mounted on the extension pole.

Abstract: Disclosed is a self-aligning auger drive assembly. The assembly includes a hopper with an auger supported therein. A shaft is connected to and extends from the auger externally from the hopper. A coupling is associated with the shaft and is operatively associated with a biasing device which creates an engaging force to promote engagement of the coupling with a motor assembly driver. A portion of the coupling defines a recess which receives at least a portion of the driver as the driver is rotated.

Abstract: A fluid bottle is provided with an interior partition wall and an interior opening that divide the fluid bottle into an interior passage section and a reservoir section. The interior passage transports fluid content between reservoir and discharge spout of bottle. The partition wall keeps fluid content in reservoir as bottle being rotated from storage position to alignment position. At alignment position, the discharge spout of bottle is at about the lowest level of the bottle, which enables discharge spout accessing and aligning to the fill port of a receiver. Consequently, the fluid bottle prevents a premature fluid discharge or spillage while discharge spout accessing and aligning to the fill port.

Abstract: A container in the form of a petrol can (10, 100) comprises a body (11; 200, 201; 300, 301) having an inlet (30; 208; 309) and an outlet (20), a valve (39, 40, 45, 51) to control liquid flow through the outlet, and an actuator (19) controlling valve movement and operable at the exterior of the body. The body defines a sealed enclosure when the inlet is closed and the actuator (19) is in its non-operative position. A dispensing spout (27; 101; 206; 306) is non-removably attached at the outlet, and if this is flexible it can be flex so that part thereof is lockingly stored in a channel (25; 207; 307) of the body when the spout is not in use. The body can be in one-piece and define rear and top handles, or can have a inner part (200; 201) to which is secured an outer body part (300; 301) which defines said handles.

Abstract: A vented closure for a liquid container which will not freely pour includes a cap hinged at one side and movable between open and closed positions relative to a base collar. In an open position, a primary fluid passageway extends through a shaped mouthpiece which is elongated and tapered to conform to a user's mouth. One or more air vents of small size are located in a protected floor of the base collar at positions spaced within predetermined ranges of offsets from the dispensing opening so as to convey liquid into contact with the air vents in a manner to self-seal the air vents by surface tension of the liquid until an unbalance force is present. The cap and collar mate along an offset diagonal edge, and a grip area for the user's thumb or finger is offset from a center line. The offsets cause the cap to flip open with additional clearance and without obstructing a user's nose.

Abstract: A nozzle and method are described for delivering a flow of liquid metal from a metallurgical vessel. In combination with inert gas, the nozzle can shield the flow of liquid metal from oxygen and, additionally, can be used to purge liquid metal residing in the metallurgical vessel. The nozzle includes a substantially gas-impermeable liner surrounded by a permeable composition. The gas-impermeable liner may comprise a resin-bonded material, and the permeable liner is preferably a carbon-bonded or castable refractory. A metal housing may surround the nozzle.

Abstract: The heavy-duty garment hanger is a hanger of hollow stainless steel construction, which can hold heavy articles of clothing. The hanger is made from hollow filamentous tubing shaped into an upwardly projecting hook adapted to engage a structure allowing the hanger to hang and a body having shoulder portions extending generally outwardly from the hook and an elongated cross member interconnecting the shoulder portions. A second length of hollow filamentous stainless steel tubing may be inserted and disposed concentrically within a portion of the first length of tubing, then bent to form the hook. A plug is inserted into the end of the hook.

Abstract: The transport apparatus is provided with a path that extends past a plurality of article transferring locations, a plurality of article transporting vehicles that run on the path, a travel driving means provided on each of the article transporting vehicles for controlling movement of the article transporting vehicle, and a ground-side controller for managing operation of the plurality of article transporting vehicles by managing the travel driving means, wherein the ground-side controller is capable of transmitting run command information and stop command information, relating to each of the article transporting vehicles, to their corresponding travel driving means, and wherein the travel driving means drives and stops the article transporting vehicles based on the run command information and the stop command information from the ground-side controller.

Abstract: A golf cart trunk has a trunk enclosure (1) affixed to at least one support component (2) proximate aft of a seat (3) of a golf cart (4). The trunk enclosure includes a predetermined door (7) that is openable, closable and lockably closed with a lock (32).

Abstract: The Celltrekker is a kit that eliminates the sometimes cumbersome and restrictive access afforded by current cellular telephone (or similar sized object) conveyances or holders. Other holders contain clips, buckles, pockets, snaps, pouches, or other types of fasteners which may require the user to manipulate said fasteners in order to gain access to the cellular telephone or similar sized object. Using the Celltrekker as designed, the user may access the cellular telephone or similar sized object by simply grasping it and pulling it away from the belt-mounted (or otherwise mounted) patch of “loops”. The user may re-attach the cellular phone or similar sized object to the holder by simply pressing the “hooks”—equipped object to the holder containing the “loops”. Celltrekker, as designed, provides unfettered access and can be adapted to fit any flat-sided or slightly curved surface, keeping obvious parameters in mind.

Abstract: The dispenser dispenses tickets such as instant-winner lottery tickets from a strip in which the individual tickets are delineated by perforation lines. The dispenser includes a separator to tear the tickets apart before issuing them from the machine. The separator preferably is rotary and has a dull helical blade which rotates to contact the ticket strip adjacent a perforation line, and presses against the strip to tear the tickets apart along the perforation line at a point which progresses across the strip along the perforation line. Preferably, a bar code reader is provided for reading codes on tickets in the dispensing machine. The bar code reader is used in reading information from the tickets to initialize the dispenser control system and in accounting for the sale of tickets, and in the verification of winning tickets being sold. A game is provided in which the concept is that a jackpot is built up using the detection of each ticket sold.

Abstract: A pneumatically operated stapler that has a single selectively operable adjusting mechanism that is constructed and arranged to be adjusted within a range of leg deflecting positions is disclosed. The stapler includes a staple leg diverting member that is carried by a portable structure for lateral movement into and out of a drive track. Successively driven staples are driven with a selected leg deflection between a minimum deflection and a maximum deflection. The adjusting mechanism is selectively adjusted within the range of positions to adjust the amount of bias of a biasing structure acting on the leg diverting member.

Abstract: In ultrasonic welding of a seam, such as for creation of an imaging belt, an ultrasonic welding horn is applied to an overlap area. The welding horn has a contact surface within a certain set of dimensions comparable to the overlap area. The welding horn defines a conical main body that tapers to the dimensions of the contact area through a short length.

Abstract: Wire bonder having a bonding head which has a bonding tool and a bonding wire guide and, especially, a bonding wire cutting device which comprises a cutter for separation of that section of a bonding wire which projects beyond a bonding contact, the wire bonder having a camera with a downstream image processing device for recording and processing an image of its working region at a workpiece, wherein with the image processing device there are associated storage means for storing desired data and/or desired images of at least one desired position of the bonding tool and/or of the bonding wire guide and/or of the cutter and/or positional relationships between at least two of those components or between at least one of those components and a substrate surface or a projecting bonding wire tail at the start and/or in at least one work phase of a bonding process and also a comparison control and comparator means connected, on the input side, to the storage means, on the one hand, and to the image processing device,

Abstract: A bonding tool for use in multi-head tape automated bonding (TAB) is provided. The bonding tool comprises a plurality of TAB bonding heads, the TAB bonding heads providing for electrical dissipation wherein current flow is low enough so as not to damage a device being bonded and high enough to avoid the build up of a charge that may discharge to the device being bonded.

Abstract: Solder metal consists essentially of 8.8 to 5.0 mass % of Zn, 0.05 to 0 mass % of Bi and the balance of Sn and unavoidable impurities.

Abstract: Determining the quality of a solder paste deposit includes comparing the fluorescence from a solder paste deposit with that of a deposit having an ideal mixture of flux and metal spheres.

Abstract: A gas turbine engine includes alternating rows of rotary airfoils or blades and static airfoils or vanes. The vanes are made of a base metal, such as cobalt or nickel superalloy. If a crack forms in one of the vanes, a braze alloy is applied to the crack. The braze alloy is a powdered slurry. The braze alloy includes approximately 50 to 100% of a base material and approximately 0 to 50% of a braze material. The base material of the braze alloy has the same composition as the composition of the base metal of the vane. The airfoil is then exposed to microwaves which melt the braze alloy in preference to the base metal to repair the crack in the vane.

Abstract: An aluminum tubular unit for long-term, leak-free storage of fluids is formed in which an aluminum cap is ultrasonically welded to an end of the aluminum tube. The ultrasonic weld is formed from a device capable of producing a torsional vibration pattern. The ultrasonic welding of the cap to the tube eliminates the use of seals and pins to seal the cap to the tube and further eliminates the need for having a hole in the cap to mechanically couple the respective end cap to the cylindrical tube. Furthermore, since ultrasonic welding does not generate significant heat, highly volatile and flammable fluids can be present within the tube when the caps are ultrasonically welded to the cylindrical body. In addition, one or more fins used may also be welded to the outside diameter of the cylindrical body using a related ultrasonic welding process.

Abstract: An apparatus and method for securing one or more workpieces before welding in a weld head unit. The apparatus includes a welding collet which incorporates a cantilevered, flexible spring “finger” or beam to support the workpiece. The finger is adapted to more uniformly distribute bending stresses along the clamping portions of the collet.

Abstract: Systems and methods for transient liquid phase bonding are described herein. Embodiments of these systems and methods utilize sandwich interlayers to produce stronger, more homogeneous bonds than currently possible. These sandwich interlayers comprise a middle bonding layer sandwiched between two outer bonding layers. The middle bonding layer comprises a different composition, and may even comprise a different form, than the outer bonding layers. In embodiments, these sandwich interlayers may be used to join a single crystal material to a polycrystalline material to make a gas turbine engine component, such as an integrally bladed rotor.

Abstract: A product packaging comprising a non-rigid wrapper sheet with a top side and a bottom side and a thickness defined between the top side and the bottom side. The non-rigid wrapper sheet includes a frangible seal. The frangible seal includes a top recess located in the top side of the non-rigid wrapper sheet and a bottom recess located in the bottom side of the non-rigid wrapper sheet and being adjacent to the top recess. The top recess is at least partially offset from the bottom recess as defined by the non-intersection of two separate planes extending perpendicularly through the top side of the non-rigid wrapper sheet with one plane also passing through the lateral center of the top recess and the other plane also passing through the lateral center of the bottom recess.

Abstract: A blank capable of being formed into a carton for enclosing a plurality of containers that includes a first side panel, a top panel, a second side panel, a bottom panel, an adhesive flap, at least one first end flap extending along a first marginal area of the blank, and at least one second end flap extending along a second marginal area of the blank. A tear line is formed in the top panel, the first side panel, and the second side panel. In some embodiments, the tear line in each side panel extends perpendicular from the top panel and continues to at least one turn to proceed into side panel end flaps. One or more stair steps can be included in each side panel along the tear line. Separation of a detachable portion from the carton along the tear line creates an opening through which the containers can be removed.

Abstract: A closing flap or clip is adapted to cap the edge of a carton in a first position and to free the access to a part of the edge in a second position. The flap passes from the first position to the second position by pivoting around a geometric axis that is perpendicular to the carton edge. The flap is formed from two panels or webs that are configured to fit on each of both sides of the edge when in the first position. First ends of the panels are crossed by the geometric axis. The flap has a hinge linking the two webs and includes means for connecting second ends of the opposing webs to their respective first ends.