Abstract: A beverage container lid includes a round rim and a flange extending beyond the rim. The rim and flange form an outer perimeter having a plurality of local maxima, at least one of which is proximal to a spout, such that the container, when tipped over with the spout oriented downward, will gravitationally roll until the rim rests on one of a plurality of local minima, which in embodiments requires rolling through an angle of no less than 30 degree and/or no more than 90. The local maxima can be equally spaced about the center of the lid and equidistant from the lid center. Between each adjacent pair of local maxima, the perimeter of the lid can be shaped substantially as an arc of a circle, where the circles can have equal radii. In some embodiments the flange extends beyond the rim everywhere.

Abstract: A container made of an elastomer such as silicone with an integrated leak resistant seal and pressure shield. Seal incorporates press-fit elements with sizes and shapes sufficient to provide a strong seal that resists leakage of liquids from inside the container, seal is integrated into the container and requires no external clips or clasps. The pressure shield increases leak resistance by at least 300% and is formed by adding material to the inside of the container and not to the engaging portions of the seal and works by deflecting pressure away from the two leak resistant seal portions. Additional features are provided to facilitate opening such as extended flaps for pulling the sides open, and asymmetric cavities for press-fit elements to reduce the initial opening force. The container may include a hole and be of asymmetrical shape, such as trapezoidal, to provide a wide opening along with a strong seal.

Abstract: A disposable child's drinking cup has a lid with a drinking spout defining multiple open holes sized to resist leakage in the absence of suction, such as by the development of surface tension at the holes, and to allow flow when suction is applied. The holes are formed during molding of the lid. An inner contour of a groove of the lid and an outer contour of the cup body rim are selected to provide a slight snap fit of the lid onto the cup body, to provide a secure seal.

Abstract: A tamper-evident rigid plastic food container system wherein the outer periphery of the mating surfaces of the lid and tray are permanently bonded together after the food product has been placed in the tray, a set of perforated rows at an inner periphery, the interconnect of which needs to be torn in order to open the lid. Intentional, inadvertent, or malicious ingress into the container can only be made by tearing at the perforations and thereby evidencing the potential tampering and contamination of the packaging contents. The lid and tray edges may further include mechanical interference fits, including snap-fit grips that may be of the releasably lockable kind to permit sealing, release, and re-sealing multiple times without deterioration in reliability, and which can further prevent or minimize leakage of liquid food product.

Abstract: A lid of a disposable beverage cup, which has at least one drinking hole provided for a consumer to drink the beverage stored in the beverage cup, and at least one vent hole provided for maintaining the pressure equivalence between an inner side and an outer side of the beverage cup, includes at least one drinking hole plug arranged for detachably coupling with the drinking hole to seal and close the drinking hole so as to prevent the beverage from leaking out of the beverage cup.

Abstract: A lid that can be sealed to a container to provide packaging includes an edge with a pull tab which facilitates removal of the lid from the container. The lid and pull tab are injection molded integrally, and the pull tab has the form of a flexible grid-like flap that is bendable to a substantially upright position. The pull tab is formed by a number of spaced, parallel and interconnected bars that extend in a direction substantially at right angles to the direction of pulling of the pull tab.

Abstract: In a container for solid, paste-like or flowable products, particularly food products, comprising a lower container part for containing the products and a container top part for closing the container, wherein the container bottom part has a rim which extends around the container bottom part opening, the container top part has a collar element which extends around the rim of the container bottom part and an essentially flat areal cover element connected to the collar element and releasably connected to the rim of the container bottom part when, after filling of the container bottom part with a product, the container is closed by the container top part.

Abstract: A lid is reliably engagable with a tray while being easily releasable without disturbing tray contents and without undue lid stress. At least two lift tabs or indentations are provided at separated locations about the lid periphery, thereby providing two distinct initial disengagement locations and overcoming any tendency of the elastic lid to reactively grip the tray when disengagement is initiated. Initial disengagement at the two locations thereby enables easy removal of the entire lid. Lid release can require simultaneous and/or sequential actuation of tabs and/or indentations. Embodiments further include locations that can be pressed while corresponding tabs are lifted. Some embodiments include a peripheral skirt that is short enough to allow a user's fingers to pass beneath and support the tray sidewalls when lifting the tray-lid assembly from a horizontal surface, avoiding any need for the lid engagement to bear the weight of the tray and its contents.

Abstract: A tamper evident package for food products is provided having a tray and a lid, which may or may not be permanently attached to each other, and includes a plastic tray for receiving a plastic lid for mating the lid and the tray, wherein the plastic lid is integrally formed with a plastic tear away band at the periphery of the lid, and a perforated section on the lid removably connects the lid and the tear away band in order to tear away the band from the lid.

Abstract: Improvement in a can of the type which comprises: a body portion; a neck portion of reduced contour and having an upper end edge provided with an outer peripheral projection and defining the contour of an upper opening; a transition portion joining the body portion and the neck portion; and a lid having a peripheral tubular portion to be fitted in the interior of the upper opening of the neck portion and having a free upper edge carrying an outer circumferential rib under which is applied an annular gasket to be seated onto the upper outer edge of the neck portion upon the fitting of the lid in the upper opening. The transition portion may externally incorporate, in a single piece, a plurality of spaced apart longitudinal ribs joining the transition portion to an adjacent lower region of the neck portion.

Abstract: A tamper evident container (10) where the base (12) has an inverted U-shaped section (25) connected to the base sidewall (21), and an annular flange (16a) extending from the base inverted U-shaped section (25) such that the base annular flange (16a) extends in a plane generally parallel to the base bottom wall (23). The lid also features an inverted U-shaped section (45) connected to the lid top surface (43), and an annular flange (16b) extends from the lid inverted U-shaped section (45) such that the lid annular flange (16b) extends in a plane generally parallel to the lid top surface (43). The base and lid inverted U-shaped sections (25, 45) are sized such that, when mounted to one another, the base and lid annular flanges (16a, 16b) abut one another and may be bonded together to thereafter form a tearable strip.

Abstract: A bowl liner for a mixing bowl of a stand mixer includes a shell and a rim secured an upper end of the shell. The shell is sized to be received in the mixing bowl, and is formed from an elastomeric material. The shell has a mixing chamber defined therein. The rim includes an outer perimeter surface that has a keyed surface section to locate the liner relative to the stand mixer.

Abstract: A lockable, reversible lid for a container having a lip. The lid includes a cover having a perimeter, a first side and a second side. A locking tab pivotally extends from an end portion of the perimeter, such that the locking tab is disposable between the container body and the container lip when the lid is positioned upon the container with the first side disposed toward the container. The lid may be inverted by slipping the locking tab past the container lip, removing the lid, and setting the inverted lid on the container with the first side disposed away from the container.

Abstract: A closure configured to be engaged with a container, wherein the closure includes a cap and a twist ring. According to aspects of the disclosure, the cap may include: a generally cylindrical main body, a lid, a sidewall extending substantially perpendicularly from the lid, a hinge which allows the lid to pivot between a closed position and an open position, and a lift tab configured to protrude outwardly from the cap. According to aspects of the disclosure, the twist ring may be configured to extend around the cap. Further the twist ring may include: a generally cylindrical main body, a rim extending in a substantially horizontal plane and a sidewall extending substantially vertically from the rim. According to aspects of the disclosure, the twist ring may be configured to be rotated in order to be positioned to selectively prevent the lid of the cap from being pivoted from the closed position to the open position.

Abstract: A cup assembly for holding a sample to be analyzed spectrochemically, includes a tubular longitudinal member which is disposed symmetrical about a central axis. The tubular member extends longitudinally between a first end and a second end. An indented peripheral flange is defined at the second end. The indented flange has an inverted L shaped cross-section. An annular collar extends longitudinally between a first end and a second end. An internal peripheral flange is defined at the first end. The internal flange has an inverted L shaped cross-section complementing the indented flange of the tubular member. When a substantially thin film is interposed between the second end of the tubular member and the first end of the annular collar, the film is retained between the sample cell body and the collar between the indented flange and the internal flange. The cup may have a funnel shaped sample retaining chamber.

Abstract: A food container includes a body and a lid. The body has a first containing space which has a first opening and a first rim on the edge of the first opening. The lid has a second rim coupled to the first rim. The first rim is extended to form a first horizontal section which is extended to form a first bent section. The first bent section further is extended to form a first latch section. The second rim is extended to form a second horizontal section, a second bent section and a second latch section. The first and second latch sections have respectively a first and second positioning portion. When the lid covers the body, the second horizontal section presses the second bent section in contact with the first bent section so that the first and second positioning portions are engaged, thereby to enhance coupling strength and sealing tightness.

Abstract: A container for holding goods comprises a basket having a base and a sidewall, a lid mateable with the basket, a first sawtooth structure formed within the sidewall and a second sawtooth structure formed within the lid and substantially mirroring the first sawtooth structure when the lid is mated with the basket.

Abstract: A container for receiving objects has a lower part with an opening and a receiving space, which is accessible via the opening, for objects, an upper part which can be connected to the lower part via at least one connecting region, wherein the at least one connecting region is designed in such a manner that the receiving space is tightly closed, and a device for releasing the connection between the upper part and lower part. The device for releasing the connection is formed between the opening and the at least one connecting region.

Abstract: A container includes a container body which defines a volume wherein a product is to be held and a cover that engages the container body to provide sufficient sealing in conjunction with the container body for the product contained therein. The container body defines an opening to the volume and the opening defines a throat of the container. The cover is configured to act as a plug in the throat of the container which provides an interference fit. The cover has an outer flange which defines tabs and the container body has an outer flange which defines notches which are configured to mechanically interlock with the tabs when the tabs are bent to engage the notches and thereby secure the cover to the container.

Abstract: A container useful for singly dispensing a tablet includes a leaf integrally formed with the sidewall and projecting generally radially inward to a distal portion. One or more such leaves define a dispensing opening having a smaller diameter than the mouth of the container. The leaves or other undercut structure can be formed using a mold element having a leading portion for forming a portion of the part beyond the resilient projection and a following portion for forming a portion of the sidewall short of the resilient projection. The following portion is withdrawn at least partially away from the outside surface of the resilient projection, leaving a space between the leading and following portions. The leading portion is withdrawn from the mold cavity against an undercut portion of the resilient projection, folding the resilient projection into the space left by retracting the following portion.

Abstract: The invention is directed to a single use disposable storage container and a lid therefor. The container includes a base and lid. The base includes a generally inverted U-shape rim for mating with the lid to secure the lid to the container base. The container lid includes a composite of paper and plastic. The plastic portion of the lid generally includes an inverted U-shape ring for mating with the base and securing the lid to the base. The plastic ring includes a peripheral ledge and seat extending from an inner side wall of the ring. The paper center panel is secured to the peripheral ledge and seat.

Abstract: A food container includes a body and a lid. The body has a first containing space which has a first opening and a first rim on the edge of the first opening. The lid has a second rim coupled to the first rim. The first rim is extended to form a first horizontal section which is extended to form a first bent section. The first bent section further is extended to form a first latch section. The second rim is extended to form a second horizontal section, a second bent section and a second latch section. The first and second latch sections have respectively a first and second positioning portion. When the lid covers the body, the second horizontal section presses the second bent section in contact with the first bent section so that the first and second positioning portions are engaged, thereby to enhance coupling strength and sealing tightness.

Abstract: A container has a lid (20) that can be opened only by lifting and pulling a pull tab (30), with lifting of the pull-tab resulting in an evident change. The pull tab (30) is held down by attachment (interference fit, weld, glue) to a lid surface (38) by a hold-down (40) that is joined to the pull tab by a pair of bridges (52, 54). When the pull tab is lifted, the bridges are broken. Thereafter, the pull-tab springs up slightly from the lid plane, under the force of one or more spring walls (80, 81) and a hinge (34), which makes it evident that the container has been opened.

Abstract: A container including a container body and a sealing cover. A peripheral wall of the container body has at least one recessed wall portion disposed in one corner thereof and forms a retracted external space area and concave camber between the recessed wall portion and a hem. A pull tab extends from an outer side of a cover sealing rib and is inserted into above said concave camber.

Abstract: A container 100 includes a cover 102 and a base 104. The container cover 102 includes a first closure portion, an engagement portion 208, and an alignment portion. The base 104 includes a second closure portion. The first closure portion of the cover 104 is sealingly engageable with the second closure portion of the base 104 to define a sealed storage area. The covers 102 stack together in two different ways. First, the covers 102 can be stacked into an “aligned” stack. Second, the covers 102 can be stacked into a releasably locked stack. The alignment portion of the cover 102 is engageable with the alignment portion of a second cover 602 to form an aligned cover stack. The engagement portion 208 of the cover 102 includes one or more engagement lugs 424 that are engageable with corresponding engagement lugs 624 of the engagement portion 608 of a second cover 602 to form a releasably locked cover stack 750.

Abstract: A food container made of thin plastic sheet material comprises a bowl and a lid, each having a peripheral sealing region with a downwardly facing channel generally shaped like an inverted “U”. The outward edges of the channels are lockingly engaged. The channels mate and engage to form a primary seal at a conical interface and a secondary seal at a rib. The rib may be on either the base, the lid, or both. Leverage provided by elastic forces in the lid's channel tightens the seals.

Abstract: The invention is directed to storage containers and lids for storage containers which provide for a secure closure and a storage container which is airtight and leakproof. The lid of the present invention includes a generally U-shaped closure made of a plastic material for securing to a container base; a center window also made of a plastic material and preferably the same as the U-shaped closure; and a thermoplastic material which provides for a sealing gasket on the underside of the U-shaped closure for mating with the container base and a perimeter seal on the outside of the U-shaped closure and around the outer circumference of the center window. The lid may further include a gripping tab made at least in part of thermoplastic material in the lid corner for opening or closing the container, and wings made of a thermoplastic material in one or more portions or corners of the lid.

Abstract: A container has a base with a bottom wall rib structure which deforms downwardly when an unresisted load is applied. The rib structure stiffens the base, and also can elevate the food product from liquid within the container. The bottom wall has a central platform which extends upwardly from a lower encircling segment. The lower encircling segment marks the lowermost portion of the base as molded, and extends inwardly from the lower margin of the sidewall. Two generally parallel longitudinal ribs extend across the platform and project upwardly from the platform. The longitudinal ribs extend from the lower encircling segment at the front of the base to the rear of the base. Short bridging ribs are evenly spaced parallel to one another and extend laterally between and connect the two longitudinal ribs. A plurality of cross ribs extend outwardly from each longitudinal rib to the encircling segment.

Abstract: A tamper-evident rigid plastic food container system wherein the outer periphery of the mating surfaces of the lid and tray are permanently bonded together after the food product has been placed in the tray, a set of perforated rows at an inner periphery, the interconnect of which needs to be torn into order to open the lid. Intentional, inadvertent or malicious ingress into the container can only be made by tearing at the perforations thereby evidencing the potential tampering and contamination of the packaging contents. The lid and tray edges may further include mechanical interference fits, including snap-fit grips that may be of the releasably lockable kind to permit sealing, release and re-sealing multiple times without deterioration in reliability, and which can further prevent or minimize leakage of liquid food product.

Abstract: A liquid container includes a brim forming an opening into a liquid reservoir chamber formed in the cup. A lid is coupled to the brim to form more than one seal with the container.

Abstract: A container lid for use with a container with a neck. The lid includes a top and bottom, a skirt extending downward from the circumference of the lid, and a circumferential flange extending radially outward from the lid. The skirt preferably includes at least one integral bead shaped to engage the neck or rim of the container. The lid preferably includes a convex center section including at least one vent. The at least one vent is preferably integral with the lid, and is opened by the steam pressure buildup inside the container when the contents are heated. When the cover is locked on the container, the skirt provides a seal against the outside of the container neck.

Abstract: A shipping plug is disclosed herein. The shipping plug is formed from a cylindrical member that is configured to be operatively disposed within a bore of a component to create a seal therewith. The cylindrical member is a resilient material, and has an upper wall, a lower wall, and a circumferential side defined between the upper and lower walls. A recess is defined in the upper wall. The recess includes a bottom end and at least one wall extending between the bottom end and the upper wall. The recess is configured to operatively receive a complementarily shaped rod which selectively distorts the circumferential side of the cylindrical member in response to a twisting or rotating action exerted thereon to temporarily release the seal.

Abstract: A substantially moisture tight container and lid assembly for storing and packaging moisture-sensitive items comprising an assembly with a container and a lid, the lid is attached by a hinge to an upper housing portion of the container, the container has a container base, and a sidewall depending upwardly from the base, a top container surface extends inward from the sidewalls, the top container surface is provided with an opening that permits access to the interior of the container, the lid portion has a lid base with an outer periphery that extends over at least a portion of the container portion, the lid base is provided with a skirt that depends downwardly from the base portion, the skirt is configured at a location on the base portion that allows the skirt to enter into a sealing relationship with the container portion, the lid includes a member that depends downwardly from the lid, the member is configured to abut at least a portion of the interior side of the container when the lid is in the closed pos

Abstract: An improvement to a container of the type that includes a vacuum formed transparent base and lid, the container having opposite sides that each forms a base flap (20) and a lid flap (22) that lie adjacent and parallel to each other, wherein the container indicates if it has been opened after a store clerk has loaded food into the container. An indicator sheet (34) lies between the base and lid and has cut-out characters (60) lying in holes (62) of a carrier (64), the carrier being bonded to the base flap and the characters being bonded to the lid flap. The container is opened by a person pulling up the lid flap, with the characters lifting out of their holes as they move up with the lid flap, and with the carrier that forms the character holes remaining on the base flap. When the lid is closed by pressing down the lid flap against the base flap, there will be some misalignment of the characters with the holes that they previously lay in, creating gaps that are readily noticeable.

Abstract: A two-piece lid is provided and includes a base portion defining at least two openings of differing sizes and a single cover portion connected to the base for covering the openings. At least one opening is constructed as to maximize the size of the opening. A confectionery container comprising the two-piece lid is also provided.

Abstract: A container for carry out heated food items, such as rotisserie chicken, has a base which is connected to a lid by a mating peripheral closure which defines a liquid tight seal. The closure has an encircling inclined wall on the base, which helps to direct the lid into engagement with the base, and which also defines a cavity within the closure which can retain liquid. The base may be provided with two fold up straps which are retained by structure in the lid to lie generally flat to serve as a convenient carrying handle above the lid. The base has rib structure allowing it to distend downwardly when loaded with food to space the heated food from the customer's hand while engaged with the handle.

Abstract: A cover-handle assembly for a kitchen vessel comprises a cover element having an outer central support element swingably housing plate gripping means which, in a rest position thereof, adjoin the surface of the cover element and, in a use position thereof, project with a slanted attitude from the cover element surface.

Abstract: A device used to aid in the opening of a container that further protects against the inadvertent opening of the container, as well as provides greater hoop strength when compared to similar containers for use in, among other things, the containment, storage, transport and/or handling of a material, is described herein.

Abstract: The invention is directed to a pour and seal assembly and method of using the same. The assembly includes a closure configured to seal an opening of a food stuffs container including a lid configured to securely cover an opening to a container holding food stuffs, a lid collar configured to, in part, form the opening and further configured to engage the lid and seal the opening to the container, and an internal collar configured to be arranged at least partially in the lid collar and to hold a portion of the container against the lid collar and further, in part, seal the opening to the container.

Abstract: A container structure includes a lid and a holder. The lid has a through hole having air-permeable troughs having inner and outer openings. The inner and outer openings of adjacent air-permeable troughs are in opposite directions. An elastic plug is fitted within the through holes, and an air-permeable passageway is formed. By providing the air-permeable passageway, high-temperature circular vapors are regulated and vented. Thus, the lid is prevented from being blown open by the vapors. Clip-on pieces and lower ribs are provided on a sealing portion of the lid. Upward bending portions and upper ribs are provided on a marginal frame portion of the holder. The lid is securely fitted onto the holder by mutual restriction of the lower and upper ribs. Pressing the clip-on pieces down will deform the sealing portions, and will free the lower ribs from the restriction of the upper ribs to open the lid quickly.

Abstract: A preservation container cover includes a flexible film to contact with the rim of the container, an upper sealing ring, and a lower sealing ring affixing a periphery portion of the flexible film. The upper sealing ring has a ring slot extending along the periphery portion of the flexible film. The lower sealing ring comprises a ring plug along the periphery portion of the flexible film. The ring slot and the ring plug form a clamp structure to affix the flexible film. The present invention is convenient to use, adaptable to various containers of different types and sizes, and won't cause waste of natural resources and environment problems.

Abstract: A closure for a microwavable container has a top wall and a skirt with at least one tab formed of a pair of straps and a thumb grip. The tab has an internal bead extending about its inner periphery which provides a shoulder which abuts a shoulder on the bead of the container to retain the closure on the container. The tab can be gripped by the user's thumb to apply force outwardly and upwardly to disengage the internal bead.

Abstract: The present invention is directed to an improved container closure or lever cap comprising one or more of the following features: (i) an improved interface on the interior surface of the closure that consists of strategically positioned locking lugs to securely affix the closure onto a container, (ii) a repositioned lever handle and fulcrum to optimize function and mechanical advantage, (iii) a retro-fit sleeve for an incompatible container, which on the inner surface is fashioned to interface with twist necks bottles, or other closure designs and mechanisms incompatible with the interior fitting of the lever cap, and which on the exterior is fashioned to receive the interior fitting of the lever cap, (iv) a tamper-evident safety indicator, (v) a specialized vertical sloping sidewall at the container's distal end near the opening to improve the closure's vertical lift during operation, (vi) a child safety design and mechanism that requires two functions to unlock the lever and position it for normal operation

Abstract: A package includes: (a) a base having a first perimeter; (b) a cover having a second perimeter; (c) a hinge pivotally coupling the base and the cover and located at a first portion of the first perimeter and at a first portion of the second perimeter; and (d) a first non-reusable security element capable of keeping the base and the cover in a closed position and located at a second portion of the first perimeter and a second portion of the second perimeter.

Abstract: A food container arrangement formed of plastic sheeting, includes a cup (12) and a cover (14) for holding foods. The cup can be held in an auto cup holder (E) while part of the cover lies over the cup and part lies beyond the cup rim. The cup and cover can be formed of a single piece of plastic sheeting, with rim joining portions (30, 32) that lie facewise adjacent with a tear line (34) between them where the sheeting can be torn to separate them. The cover has an upper surface with a groove (80) that can receive the rim of the cup when the cover lies in an upside-down position. The cover groove walls include a projection (112) and the cup rim has an L-shaped insertion slot (100) that the cover projection fits into to prevent the cover from falling off.

Abstract: A container for collecting and storing breast milk. More particularly, one embodiment provides a container for collecting and storing breast milk obtained using a breast pump, comprising: a body, wherein the body has an open end with a lip, a closed end and a cavity between the open end and the closed end for receiving therein the breast milk; a cap; a hinge disposed adjacent the open end of the body for connecting the cap to the body; a sealing mechanism disposed on the cap, wherein the sealing mechanism provides a resealable, watertight seal between the cap and the lip of the body when the cap is placed thereon; and at least one thread disposed at the open end of the body, wherein the thread is configured to provide a screw-on connection between the body and the breast pump.

Abstract: A substantially moisture tight container and lid assembly for storing and packaging moisture-sensitive items comprising an assembly with a container and a lid, the lid is attached by a hinge to an upper housing portion of the container, the container has a container base, and a sidewall depending upwardly from the base, a top container surface extends inward from the sidewalls, the top container surface is provided with an opening that permits access to the interior of the container, the lid portion has a lid base with an outer periphery that extends over at least a portion of the container portion, the lid base is provided with a skirt that depends downwardly from the base portion, the skirt is configured at a location on the base portion that allows the skirt to enter into a sealing relationship with the container portion, the lid includes a member that depends downwardly from the lid, the member is configured to abut at least a portion of the interior side of the container when the lid is in the closed pos

Abstract: The present invention discloses a fastening structure having a fastening flange extended outward from the periphery of a cover, and the fastening flange has a latch portion under the fastening flange for latching and fixing the cover; and a hinge portion for connecting the fastening flange at the periphery of the cover, and the hinge portion has a plurality of sections of crevices for reducing a hinge area that connects the fastening flange to the cover. The invention also discloses a sealed box that includes the fastening structure, and a container having a latch structure disposed at a top edge of the container and used together with the latch portion for latching and fixing the cover. Without changing the thickness of the hinge portion, the invention can save efforts for the operation of the sealed box while maintaining the stress of the hinge portion.

Abstract: Polymeric containers that have a container body and a removable and replaceable lid configured for sealing engagement with the body. The sealing arrangement between the container body and the lids includes a discontinuity feature that provides a passage for fluid from the exterior of the container to the sealing arrangement, which reduces the forces needed to open (e.g., unseal) or vent the container. The containers are often thermoformed, and might be considered “disposable” containers.

Abstract: A container device with a tightly engaged cover comprises a container; each of at least two lateral walls having a buckling recess; a cover; each of at least two sides of the cover being formed with downward buckling plate; an inner side of each buckling plate having at least one buckle; an upper side of one end of the buckle having a buckling block. When the cover covers upon the container, the buckling plates of the cover will be expanded so that the cover covers the container. The buckles of the buckling plates of the cover will align to and enter into the buckling recesses of the container so that the buckles move downwards through a length; and thus the buckling blocks of the buckles will engage in the buckling recesses of the container; and the container is engaged with the cover by horizontal insertion and buckling effect.