US2767754A - Plastic container - Google Patents

Plastic container Download PDF

Info

Publication number
US2767754A
US2767754A US271313A US27131352A US2767754A US 2767754 A US2767754 A US 2767754A US 271313 A US271313 A US 271313A US 27131352 A US27131352 A US 27131352A US 2767754 A US2767754 A US 2767754A
Authority
US
United States
Prior art keywords
receptacle
flange
closure
ledge
disc
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US271313A
Inventor
Frederick E Lederer
Jr Benjamin M Levin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US271313A priority Critical patent/US2767754A/en
Application granted granted Critical
Publication of US2767754A publication Critical patent/US2767754A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D43/00Lids or covers for rigid or semi-rigid containers
    • B65D43/02Removable lids or covers
    • B65D43/0202Removable lids or covers without integral tamper element
    • B65D43/0204Removable lids or covers without integral tamper element secured by snapping over beads or projections
    • B65D43/021Removable lids or covers without integral tamper element secured by snapping over beads or projections only on the inside, or a part turned to the inside, of the mouth
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018Overall construction of the lid
    • B65D2543/00037Disc closures
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018Overall construction of the lid
    • B65D2543/00231Overall construction of the lid made of several pieces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018Overall construction of the lid
    • B65D2543/00259Materials used
    • B65D2543/00314Combination, e.g. laminates, several different materials
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444Contact between the container and the lid
    • B65D2543/00481Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/0049Contact between the container and the lid on the inside or the outside of the container on the inside, or a part turned to the inside of the mouth of the container
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444Contact between the container and the lid
    • B65D2543/00481Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/00537Contact between the container and the lid on the inside or the outside of the container on the outside, or a part turned to the outside of the mouth of the container
    • B65D2543/00546NO contact
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444Contact between the container and the lid
    • B65D2543/00592Snapping means
    • B65D2543/00601Snapping means on the container
    • B65D2543/00611Profiles
    • B65D2543/00629Massive bead
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444Contact between the container and the lid
    • B65D2543/00592Snapping means
    • B65D2543/00601Snapping means on the container
    • B65D2543/00675Periphery concerned
    • B65D2543/00685Totality
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444Contact between the container and the lid
    • B65D2543/00592Snapping means
    • B65D2543/00712Snapping means on the lid
    • B65D2543/00722Profiles
    • B65D2543/00759Flange or lip
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00Lids or covers essentially for box-like containers
    • B65D2543/00009Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444Contact between the container and the lid
    • B65D2543/00592Snapping means
    • B65D2543/00712Snapping means on the lid
    • B65D2543/00787Periphery concerned
    • B65D2543/00796Totality

Definitions

  • the present invention relates to reusable packaging containers made of plastic which are particularly suited for use in connection with refrigerated foods.
  • Another object of the present invention is to provide a moldable pliant storage receptacle which may be used for refrigerated food packaging and which may be sealed by a rigid flat closure element reliably effecting moistureproof seating engagement between the two capable of withstanding the rigors of freezer and refrigerator compartment exposure.
  • Yet another object of the present invention is to provide a packaging container for various classes of comes- Itibles which require isolation against influences of humidity and dehydration, which lends itself to close placement for the economical utilization of storage space, and which may be repetitively opened and closed while utilizing as a closure element a simple profiled planar partition provided with a lift tab.
  • a receptacle component in substantially rectangular shape with a parapet type of retaining flange which extends around the uppermost outer periphery of its defining walls.
  • the flange is marginally offset from the principal portions of the defining walls and is significantly shaped on its interior surfaces with a gently inwardly converging slope beneath which there is provided a perimet-ric recess and a seating ledge.
  • the closure member is made of a profiled flat partitioning element having on its inner surface a bonded film of polyethylene. This member is accurately dimensioned so as to be received snugly within the receptacle recess under conditions of marginal encompassing pressures.
  • the recess of the receptacle is preferably sloped at its uppermost engaging surface so as to exert a downwardly directed camming force whereby to urge the polythylene film on the closure member against the seating ledge.
  • Fig. 1 is a plan view with portions in section of a rectangular receptacle with a closure partition applied embodying various features of the present invention
  • Fig. 2 is a side elevational view on an enlarged scale of the closure partition alone with a portion thereof broken away and in section;
  • Fig. 3 is a slide elevational view of the apparatus disclosed in Fig. 1;
  • Fig. 4 is an enlarged fragmentary sectional view taken approximately on line 4-4 of Fig. 1 showing the cover partition in an intermediate position of application;
  • Fig. 5 is a view similar to Fig. 4 showing the cover partition fully installed in its perimetric seating groove of the receptacle;
  • Fig. 6 is a fragmentary plan view on an enlarged scale of the cover partition featuring the lift tab detail
  • Fig. 7 is an enlarged detail sectional view similar to Figs. 4 and 5 but showing a modified form of parapet flange and seating groove.
  • receptacle or container member which is, illustrated as having identical side wall portions 11 which slope convergingly inward and downward and which join at the corners with curved sections designated 12.
  • a bottom wall 13, Fig. 3, may advantageously be recessed as at 14 so that the receptacle will rest on a lowermost perimetric edge flange 15 in the event that any bulging or deformation is impressed upon the bottom wall.
  • the receptacle walls merge as at 16 into a parapet flange 17 which bulges slightly outwardly terminating with a beaded curvature as at 18 to afford reinforcement.
  • This arrangement permits a number of such receptacles to be stacked in tier alignment.
  • the flange 17 may have an outer wall surface which is substantially vertical but its inner surface 19 is preferably convergent to a marked degree ending with a protuberant ridge as at 2-1 thence receding into a rectangular recess 22 of which one side wall 23'forming the uppermost boundary of the recess is a sloping surface and of which the other side wall 24 is preferably horizontal.
  • the horizontal surface may include a seating ridge such as that shown in the modified illustration Fig. 7 as at 25.
  • the recess 22 preferably parallels the general contour of the flange 17 even as at 26, Fig. 1, in connection with the corner radii curvatures.
  • a cover closure member generally indicated 27 is accordingly of similar profile so that when positioned after the manner illustrated in Fig. 5 the sloping recess surface 23 will engage the outermost edge of the cover member throughout its entire extent exerting a downward pressure component thereto. This effect holds the bottom surface of cover 27 firmly against the ledge 24 or where preferred against the shallow ridge 25 to effect a moistureproof barrier thereat.
  • the placement of the cover portion 27 may be achieved quite rapidly by inducing a mild deformation of the flange 17 during the time that the cover undergoes the intermediate stage of application featured in Fig. 4.
  • the cover member itself is preferably made of a comparatively rigid material such as bonded laminations of sulphite fibre impervious to moisture penetration and yieldable to a limited extent only by a transverse bowing thereof in a manner suggested by the illustration of Fig. 4.
  • a comparatively rigid material such as bonded laminations of sulphite fibre impervious to moisture penetration and yieldable to a limited extent only by a transverse bowing thereof in a manner suggested by the illustration of Fig. 4.
  • a comparatively rigid material such as bonded laminations of sulphite fibre impervious to moisture penetration and yieldable to a limited extent only by a transverse bowing thereof in a manner suggested by the illustration of Fig. 4.
  • the under surface of the cover partition 27 may be coated to its full extent or even peripherally with a film of polyethylene 28.
  • a more durable cover structure is had when the film is applied prior to the profiling or stamping of the cover so as to produce sharp identical outline in the two principal laminations.
  • a more positive sealing barrier may be effected where both of the engaging components are in this way comprised of polyethylene plastic due to the characteristic tackiness or waxiness of the material contributed in plural degree by both of the engaging surfaces.
  • the parapet flange designated 35 is characterized by an interior wall surface 36 differing from the wall surface 19 in significant and contrasting manner as best revealed by the inwardly sloping curvature or approach portion 37.
  • This arrangement permits a portion of the wall surface 37 to be more nearly perpendicular to the rigid cover. Accordingly, during placement of the closure cover 27 where one edge may be snapped into the recess 22a ahead of another the final edges to be seated are less likely to back out due to the retentive characteristics of the perpendicular wall section preceding the ridge 38.
  • the approach surface 37 may be described as a reverse curvature respecting ridge 38 and is deemed for certain uses preferable to the continuous angle slope of the preferred embodiment shown in Figs. 4 and 5.
  • the container can be readily and easily cleaned around the edges and bottom for repeated uses. Merely flexing the flanges 17 and 35 will loosen encrustations and open the grooves 22 and 2211 wide enough to be worked clean.
  • a packaging container for frozen foods comprising a receptacle having a rectangular shape with side walls converging downwardly and joined at their mutual junctures with minor radius fillets, a parapet flange defining the uppermost periphery of said receptacle, said flange being an outwardly offset of said side walls as well as of said radius fillets and including an interior surface tapering inwardly and downwardly and extending to an undercut recess, said recess having a V-shaped profile one of the sides of which is substantially horizontal and marginally longer than the other to constitute seating ledge, and a closure for said receptacle comprising a flat disc dimensioned to lodge in said V-shaped recess under pressure fit contacting engagement with the other side of said of said V-shaped recess wherefor said disc is held in sealing engagement with said seating ledge, said disc being made of springably rigid material such as laminated sulphite board and having applied to its interior surface to the extent at least of its ledge engaging
  • a container for refrigeration storage of foods comprising a receptacle, side walls to said receptacle joined with minor radius curvature wall portions, :1 laterally offset flange at the uppermost periphery of said receptacle having an interior wall surface with a perimetric inner flange and a V-shaped groove adjacent said inner flange, one of the sides of said groove being substantially horizontal and forming a seating ledge, the other of the sides of said groove sloping upwardly and inwardly, and a closure for said receptacle which comprises a disc member profiled to lodge tightly in said V-shaped groove so that the sloping side of said groove cams said disc into sealing engagement with said seating ledge, and a polyethylene film adherent on the under side of said disc to form an effective moisture sealing engagement with said sealing ledge.
  • a container for frozen foods comprising a cup member molded of polyethylene in rectangular form flat side walls to said member connected together at corner junctions with minor radius cuwatures, a parapet flange extending around the top of said side walls and having an interior surface tapering inwardly and downwardly, a perimetric ledge inside said flange at the level of said side walls, said cup member having a V-shaped groove between said ledge and said interior surface, and a rcstorablc closure of flat stock springably rigid material profiled to be snugly received within said groove, the upper surface of said Vshaped groove impinging upon the pcrimetric boundary of said closure whereby to cam said closure into sealing engagement with said ledge.
  • a packaging container for refrigerated foods comprising a rectangular receptacle molded of polyethylene and comprising downwardly and inwardly tapering side walls mutually adjoined with minor radius fillets, a bottom wall to said receptacle, a peripheral offset flange constituting an uppermost extremity of said receptacle and having an interior surface tapering inwardly to effect a passageway constriction terminated by a retention ridge, a V-shaped groove below said ridge of which the upper surface slopes pyramidally and of which the lower surface extends horizontally and a removable closure panel comprising a flat disc member profiled to seat within said V-shaped groove, and comprised of bonded layers of which a lowermost one is made of polyethylene, whereby retention pressure of said flange imparted through said pyramidal slope of said V-shaped groove effects sealing of said disc member lowermost layer with said receptacle horizontal surface.
  • a packaging container for refrigerated foods comprising a receptacle molded of polyethylene and comprising side walls, corner fillets connecting said side walls. a bottom wall to said receptacle, a flange circumscribing said side walls and fillets and having on its interior surface a perimetric closure receiving recess, said recess being of V-shaped cross-section and merging into a sealing ledge. and a closure disc having a polyethylene sealing surface and adapted to be placed into sealing engagement with said ledge.
  • a container for refrigeration storage of foods comprising a receptacle having side walls and rounded corner portions, a laterally offset flange skirting said walls and portions having an interior surface which extends first downwardly then curves inwardly and merges into a passage constriction flange, the level immediately beneath said constriction flange having a substantially V-shaped groove, the upper side of which slopes upwardly and inwardly and the lower side of which extends horizontally to form a seating ledge, and a closure disc for said receptacle profiled to be frictionally engaged by said offset flange interior surface at its downwardly extending portion pending encounter with said passage constriction flange, said disc being so conformed with respect to said groove to lodge tightly therewithin with the sloping side of said groove camming said disc into sealing engagement with said seating ledge, and a polyethylene film adherent on the under side of said disc to form an effective moisture sealing engagement with said seating ledge.
  • a container for refrigeration storage of foods comprising a receptacle, side Walls to said receptacle, a laterally offset flange at the innermost periphery of said receptacle having an interior wall surface with a perimetric inner flange and a V-shaped groove adjacent said inner flange, a beveled cam surface adjacent said inner flange, a polyethylene, substantially horizontal seating ledge intersecting said beveled camming surface, a closure for said receptacle comprising a disc member profiled to lodge in the V-shaped groove formed by said ledge and said camming surface, said camming surface being adapted to force said disc into sealing engagement with said seating ledge and a polyethylene film adherent on the under side of said disc to form an effective moisture sealing engagement with said seating ledge.

Description

23, 1956 F. E. LEDERER ETAL 2,767,754' I I 4 PLASTIC CONTAINER Filed Feb. 15, 1952' IN V EN TORS/ United States Patent PLASTIC CONTAINER Frederick E. Lederer, Chicago, and Benjamin M. Levin, Jr., Glencoe, Ill.
Application February 13, 1952, Serial No. 271,313
7 Claims. (Cl. 150-.5)
The present invention relates to reusable packaging containers made of plastic which are particularly suited for use in connection with refrigerated foods.
It is a principal object of the present invention to devise a rectangular packaging container consisting of a receptacle portion and a closure portion of which the receptacle portion may be molded of a deformable plastic material such as polyethylene and having an abutting surface sealing ledge and of which the closure portion is flat stock rigid material with a plastic surface layer to abut said ledge under conditions of facile application and removal attended by moisture-proof sealing interengagement between the two components.
Another object of the present invention is to provide a moldable pliant storage receptacle which may be used for refrigerated food packaging and which may be sealed by a rigid flat closure element reliably effecting moistureproof seating engagement between the two capable of withstanding the rigors of freezer and refrigerator compartment exposure.
Yet another object of the present invention is to provide a packaging container for various classes of comes- Itibles which require isolation against influences of humidity and dehydration, which lends itself to close placement for the economical utilization of storage space, and which may be repetitively opened and closed while utilizing as a closure element a simple profiled planar partition provided with a lift tab.
The foregoing and other objects of the present invention are attained in accordance with a preferred practice by forming :a receptacle component in substantially rectangular shape with a parapet type of retaining flange which extends around the uppermost outer periphery of its defining walls. The flange is marginally offset from the principal portions of the defining walls and is significantly shaped on its interior surfaces with a gently inwardly converging slope beneath which there is provided a perimet-ric recess and a seating ledge. The closure member is made of a profiled flat partitioning element having on its inner surface a bonded film of polyethylene. This member is accurately dimensioned so as to be received snugly within the receptacle recess under conditions of marginal encompassing pressures. The recess of the receptacle, moreover, is preferably sloped at its uppermost engaging surface so as to exert a downwardly directed camming force whereby to urge the polythylene film on the closure member against the seating ledge.
In order that this invention may be more fully understood reference will now be had to the accompanying drawing and to the following detailed description in which a preferred embodiment thereof is contemplated for illustrative purposes.
In the drawing:
Fig. 1 is a plan view with portions in section of a rectangular receptacle with a closure partition applied embodying various features of the present invention;
Fig. 2 is a side elevational view on an enlarged scale of the closure partition alone with a portion thereof broken away and in section;
Fig. 3 is a slide elevational view of the apparatus disclosed in Fig. 1;
Fig. 4 is an enlarged fragmentary sectional view taken approximately on line 4-4 of Fig. 1 showing the cover partition in an intermediate position of application;
Fig. 5 is a view similar to Fig. 4 showing the cover partition fully installed in its perimetric seating groove of the receptacle;
Fig. 6 is a fragmentary plan view on an enlarged scale of the cover partition featuring the lift tab detail; and
Fig. 7 is an enlarged detail sectional view similar to Figs. 4 and 5 but showing a modified form of parapet flange and seating groove.
Referring now more particularly to the illustrations of Figs. 1-6, attention is directed :to the receptacle or container member which is, illustrated as having identical side wall portions 11 which slope convergingly inward and downward and which join at the corners with curved sections designated 12. A bottom wall 13, Fig. 3, may advantageously be recessed as at 14 so that the receptacle will rest on a lowermost perimetric edge flange 15 in the event that any bulging or deformation is impressed upon the bottom wall.
At their uppermost level the receptacle walls merge as at 16 into a parapet flange 17 which bulges slightly outwardly terminating with a beaded curvature as at 18 to afford reinforcement. This arrangement permits a number of such receptacles to be stacked in tier alignment.
The flange 17 may have an outer wall surface which is substantially vertical but its inner surface 19 is preferably convergent to a marked degree ending with a protuberant ridge as at 2-1 thence receding into a rectangular recess 22 of which one side wall 23'forming the uppermost boundary of the recess is a sloping surface and of which the other side wall 24 is preferably horizontal. If preferred,'the horizontal surface may include a seating ridge such as that shown in the modified illustration Fig. 7 as at 25.
The recess 22 preferably parallels the general contour of the flange 17 even as at 26, Fig. 1, in connection with the corner radii curvatures. A cover closure member generally indicated 27 is accordingly of similar profile so that when positioned after the manner illustrated in Fig. 5 the sloping recess surface 23 will engage the outermost edge of the cover member throughout its entire extent exerting a downward pressure component thereto. This effect holds the bottom surface of cover 27 firmly against the ledge 24 or where preferred against the shallow ridge 25 to effect a moistureproof barrier thereat. By making the cup or receptacle of a deformable plastic compound such as polyethylene the placement of the cover portion 27 may be achieved quite rapidly by inducing a mild deformation of the flange 17 during the time that the cover undergoes the intermediate stage of application featured in Fig. 4. v
The cover member itself is preferably made of a comparatively rigid material such as bonded laminations of sulphite fibre impervious to moisture penetration and yieldable to a limited extent only by a transverse bowing thereof in a manner suggested by the illustration of Fig. 4. As the cover passes the interior ridge or bead 21 it snaps into the groove 22 and is prevented from overtravel by the positive encounter with the wide surface ledge 24. Restoration of the receptacle flange 17 as well as of the closure partition 27 to their original forms is achieved following the full seating of the disc after the manner of Fig. 5.
In order to provide for moisture-proof sealing the under surface of the cover partition 27 may be coated to its full extent or even peripherally with a film of polyethylene 28. A more durable cover structure is had when the film is applied prior to the profiling or stamping of the cover so as to produce sharp identical outline in the two principal laminations. Whether the film surface 28 engages the ledge 24 or the ridge 25 a more positive sealing barrier may be effected where both of the engaging components are in this way comprised of polyethylene plastic due to the characteristic tackiness or waxiness of the material contributed in plural degree by both of the engaging surfaces.
While lift tabs for the purpose of removing the closure 27 in generally similar devices are known which effect a transverse deformation in order to achieve adequate clearance to permit removal, the provision of such a tab as at 31 in the type of closure structure 27 is attended with certain advantageous performance to which attention is now directed. By locating the tab 31 in the approximate center of the rectangular closure member 27 the lift force exerted through the tab 31 is observed to produce a characteristic pyramidal deformation or inflection gathering inwardly the straight line edges of the cover 27 somewhat ahead of the corner extremities and consequently reducing to a marked degree the frictional deterrent between the cover 27 and the interior surface 23 of flange 17. The tab 31 can be any size desired.
In this Way the lift operation has been found to be noticeably relieved minimizing the strain hazard which otherwise results in the rupturing of the tab 31 at its connecting neck. In the case of tabs which are secured as separate members by stapling or otherwise the aforedescribed lift operation is also of significant advantage because there also the friction deterrent constitutes an added strain to the tab securement element.
In Fig. 7 the parapet flange designated 35 is characterized by an interior wall surface 36 differing from the wall surface 19 in significant and contrasting manner as best revealed by the inwardly sloping curvature or approach portion 37. This arrangement permits a portion of the wall surface 37 to be more nearly perpendicular to the rigid cover. Accordingly, during placement of the closure cover 27 where one edge may be snapped into the recess 22a ahead of another the final edges to be seated are less likely to back out due to the retentive characteristics of the perpendicular wall section preceding the ridge 38. As a consequence the approach surface 37 may be described as a reverse curvature respecting ridge 38 and is deemed for certain uses preferable to the continuous angle slope of the preferred embodiment shown in Figs. 4 and 5.
It will also be noted that with either embodiment, the container can be readily and easily cleaned around the edges and bottom for repeated uses. Merely flexing the flanges 17 and 35 will loosen encrustations and open the grooves 22 and 2211 wide enough to be worked clean.
While the present invention has been explained and described in reference to a preferred embodiment and an exemplary illustration of modification, it is to be understood nevertheless that numerous changes and variations lend themselves to be incorporated without departure from the spirit or scope thereof. Accordingly, it is not intended for an understanding of this invention to be restricted by the portrayal in the accompanying drawing nor by the language of the preceding description except as indicated in the hereinafter appended claims.
What is claimed is:
l. A packaging container for frozen foods comprising a receptacle having a rectangular shape with side walls converging downwardly and joined at their mutual junctures with minor radius fillets, a parapet flange defining the uppermost periphery of said receptacle, said flange being an outwardly offset of said side walls as well as of said radius fillets and including an interior surface tapering inwardly and downwardly and extending to an undercut recess, said recess having a V-shaped profile one of the sides of which is substantially horizontal and marginally longer than the other to constitute seating ledge, and a closure for said receptacle comprising a flat disc dimensioned to lodge in said V-shaped recess under pressure fit contacting engagement with the other side of said of said V-shaped recess wherefor said disc is held in sealing engagement with said seating ledge, said disc being made of springably rigid material such as laminated sulphite board and having applied to its interior surface to the extent at least of its ledge engaging arcas a polyethylene film adherent, and being incised in respect to its exterior lamina to define an engageable finger tab, the non-incised junction portion of said tab being located substantially at the center of said disc so that a lifting force exerted thereat may cause to be induced upon said disc pyramidal inflection to release the polyethylene film adherent from sealed engagement with said seating ledge.
2. A container for refrigeration storage of foods comprising a receptacle, side walls to said receptacle joined with minor radius curvature wall portions, :1 laterally offset flange at the uppermost periphery of said receptacle having an interior wall surface with a perimetric inner flange and a V-shaped groove adjacent said inner flange, one of the sides of said groove being substantially horizontal and forming a seating ledge, the other of the sides of said groove sloping upwardly and inwardly, and a closure for said receptacle which comprises a disc member profiled to lodge tightly in said V-shaped groove so that the sloping side of said groove cams said disc into sealing engagement with said seating ledge, and a polyethylene film adherent on the under side of said disc to form an effective moisture sealing engagement with said sealing ledge.
3. A container for frozen foods comprising a cup member molded of polyethylene in rectangular form flat side walls to said member connected together at corner junctions with minor radius cuwatures, a parapet flange extending around the top of said side walls and having an interior surface tapering inwardly and downwardly, a perimetric ledge inside said flange at the level of said side walls, said cup member having a V-shaped groove between said ledge and said interior surface, and a rcstorablc closure of flat stock springably rigid material profiled to be snugly received within said groove, the upper surface of said Vshaped groove impinging upon the pcrimetric boundary of said closure whereby to cam said closure into sealing engagement with said ledge.
4. A packaging container for refrigerated foods comprising a rectangular receptacle molded of polyethylene and comprising downwardly and inwardly tapering side walls mutually adjoined with minor radius fillets, a bottom wall to said receptacle, a peripheral offset flange constituting an uppermost extremity of said receptacle and having an interior surface tapering inwardly to effect a passageway constriction terminated by a retention ridge, a V-shaped groove below said ridge of which the upper surface slopes pyramidally and of which the lower surface extends horizontally and a removable closure panel comprising a flat disc member profiled to seat within said V-shaped groove, and comprised of bonded layers of which a lowermost one is made of polyethylene, whereby retention pressure of said flange imparted through said pyramidal slope of said V-shaped groove effects sealing of said disc member lowermost layer with said receptacle horizontal surface.
5. A packaging container for refrigerated foods comprising a receptacle molded of polyethylene and comprising side walls, corner fillets connecting said side walls. a bottom wall to said receptacle, a flange circumscribing said side walls and fillets and having on its interior surface a perimetric closure receiving recess, said recess being of V-shaped cross-section and merging into a sealing ledge. and a closure disc having a polyethylene sealing surface and adapted to be placed into sealing engagement with said ledge.
6. A container for refrigeration storage of foods comprising a receptacle having side walls and rounded corner portions, a laterally offset flange skirting said walls and portions having an interior surface which extends first downwardly then curves inwardly and merges into a passage constriction flange, the level immediately beneath said constriction flange having a substantially V-shaped groove, the upper side of which slopes upwardly and inwardly and the lower side of which extends horizontally to form a seating ledge, and a closure disc for said receptacle profiled to be frictionally engaged by said offset flange interior surface at its downwardly extending portion pending encounter with said passage constriction flange, said disc being so conformed with respect to said groove to lodge tightly therewithin with the sloping side of said groove camming said disc into sealing engagement with said seating ledge, and a polyethylene film adherent on the under side of said disc to form an effective moisture sealing engagement with said seating ledge.
7. A container for refrigeration storage of foods comprising a receptacle, side Walls to said receptacle, a laterally offset flange at the innermost periphery of said receptacle having an interior wall surface with a perimetric inner flange and a V-shaped groove adjacent said inner flange, a beveled cam surface adjacent said inner flange, a polyethylene, substantially horizontal seating ledge intersecting said beveled camming surface, a closure for said receptacle comprising a disc member profiled to lodge in the V-shaped groove formed by said ledge and said camming surface, said camming surface being adapted to force said disc into sealing engagement with said seating ledge and a polyethylene film adherent on the under side of said disc to form an effective moisture sealing engagement with said seating ledge.
References Cited in the file of this patent UNITED STATES PATENTS 1,064,787 Taylor June 17, 1913 1,106,191 Crooks Aug. 4, 1914 1,183,728 Griffith May 16, 1916 1,345,036 Thompson June 29, 1920 1,463,198 Dance July 31, 1923 1,482,761 Moore Feb. 5, 1924 1,541,146 Huntley June 9, 1925 1,850,494 Brewer Mar. 22, 1932 1,916,857 Copeman July 4, 1933 1,973,758 Gray et a1. Sept. 18, 1934 2,030,841 Anaya Feb. 18, 1936 2,167,783 Strovink Aug. 1, 1939 2,367,250 Warth et al. Jan. 16, 1945 2,409,460 Waters Oct. 15, 1946 2,420,215 Wiley May 6, 1947 2,487,400 Tubber Nov. 8, 1949 2,494,047 Lay Jan. 10, 1950 2,606,586 Hill Aug. 12, 1952
US271313A 1952-02-13 1952-02-13 Plastic container Expired - Lifetime US2767754A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US271313A US2767754A (en) 1952-02-13 1952-02-13 Plastic container

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US271313A US2767754A (en) 1952-02-13 1952-02-13 Plastic container

Publications (1)

Publication Number Publication Date
US2767754A true US2767754A (en) 1956-10-23

Family

ID=23035059

Family Applications (1)

Application Number Title Priority Date Filing Date
US271313A Expired - Lifetime US2767754A (en) 1952-02-13 1952-02-13 Plastic container

Country Status (1)

Country Link
US (1) US2767754A (en)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2875806A (en) * 1955-11-28 1959-03-03 Quaker Stretcher Company Laundry cart with plastic basket
US2880859A (en) * 1956-07-30 1959-04-07 Tupper Corp Receptacles having forced or snapped-in covers
US3086544A (en) * 1960-10-12 1963-04-23 Gen Motors Corp Check valve
US3120912A (en) * 1960-03-28 1964-02-11 Lily Tulip Cup Corp Pitchers and the like covered dispensing containers
US3172562A (en) * 1963-03-18 1965-03-09 Shell Oil Co Stackable container
US3270875A (en) * 1965-05-03 1966-09-06 Procter & Gamble Removable cover for display package
US3398847A (en) * 1967-04-06 1968-08-27 Edward J. Towns Container and safety closure therefor
US3417614A (en) * 1966-02-21 1968-12-24 Illinois Tool Works Liquid level indicator
US3417615A (en) * 1967-04-26 1968-12-24 Illinois Tool Works Liquid level indicator
US3424004A (en) * 1966-02-21 1969-01-28 Illinois Tool Works Liquid level indicator
US3443436A (en) * 1966-07-11 1969-05-13 Leopold Co Inc F B Meter housing structure
US3491914A (en) * 1968-06-07 1970-01-27 Kalamazoo Plastics Co Expanded plastic container having rigid internally press-fit cover
US3749276A (en) * 1970-01-14 1973-07-31 Sweetheart Plastics Container and closure
US3768689A (en) * 1972-04-24 1973-10-30 J Gauthier Environmental collection box
EP0337715A2 (en) * 1988-04-12 1989-10-18 Kingsley Nominees Pty. Ltd. Container closure
US5069353A (en) * 1988-11-21 1991-12-03 Lyonnaise Des Eaux Housing for fiber-bundle filter modules
US5085339A (en) * 1990-10-01 1992-02-04 Polystar Packaging, Incorporated Reclosable container closure
WO1999035045A1 (en) * 1998-01-07 1999-07-15 Dispensing Containers Corp Resealable easy open closure and can
US6261523B1 (en) * 1999-04-27 2001-07-17 Agilent Technologies Inc. Adjustable volume sealed chemical-solution-confinement vessel
US20050247712A1 (en) * 2002-07-26 2005-11-10 Wallis Andrew J Peelable lid structure
US20090057311A1 (en) * 2007-09-03 2009-03-05 Lie Chien-Chang Environmental protection paper cup with a cover

Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1064787A (en) * 1911-07-03 1913-06-17 American Mono Service Company Paper receptacle.
US1106191A (en) * 1914-01-30 1914-08-04 Harry R Crooks Bottle.
US1183728A (en) * 1916-02-24 1916-05-16 Miller Rubber Co Nipple.
US1345036A (en) * 1920-01-05 1920-06-29 Hugh Stevenson & Sons Ltd Container
US1463198A (en) * 1921-09-01 1923-07-31 Victoria E Dance Bottle stopper
US1482761A (en) * 1921-03-23 1924-02-05 Moore Arlington Paper container
US1541146A (en) * 1923-05-22 1925-06-09 Ernest R Huntley Paper container
US1850494A (en) * 1930-02-21 1932-03-22 Individual Drinking Cup Co Container closure
US1916857A (en) * 1930-07-02 1933-07-04 Copeman Lab Co Closure member and method of forming and applying
US1973758A (en) * 1933-10-14 1934-09-18 Philip P Gray Milk bottle cap
US2030841A (en) * 1932-10-03 1936-02-18 Anaya Cliserio Bottle closure
US2167783A (en) * 1937-10-09 1939-08-01 Bennett Inc Bottle closure or the like and paperboard therefor
US2367250A (en) * 1941-05-02 1945-01-16 Crown Cork & Seal Co Method of making caps
US2409460A (en) * 1936-07-18 1946-10-15 Harry F Waters Manufacture of containers
US2420215A (en) * 1944-11-04 1947-05-06 Julian T Lett Stacking cups and container for same
US2487400A (en) * 1947-06-02 1949-11-08 Earl S Tupper Open mouth container and nonsnap type of closure therefor
US2494047A (en) * 1948-03-09 1950-01-10 A H Wirz Inc Affixing liners to caps
US2606586A (en) * 1949-06-03 1952-08-12 Crown Cork Specialty Corp Container

Patent Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1064787A (en) * 1911-07-03 1913-06-17 American Mono Service Company Paper receptacle.
US1106191A (en) * 1914-01-30 1914-08-04 Harry R Crooks Bottle.
US1183728A (en) * 1916-02-24 1916-05-16 Miller Rubber Co Nipple.
US1345036A (en) * 1920-01-05 1920-06-29 Hugh Stevenson & Sons Ltd Container
US1482761A (en) * 1921-03-23 1924-02-05 Moore Arlington Paper container
US1463198A (en) * 1921-09-01 1923-07-31 Victoria E Dance Bottle stopper
US1541146A (en) * 1923-05-22 1925-06-09 Ernest R Huntley Paper container
US1850494A (en) * 1930-02-21 1932-03-22 Individual Drinking Cup Co Container closure
US1916857A (en) * 1930-07-02 1933-07-04 Copeman Lab Co Closure member and method of forming and applying
US2030841A (en) * 1932-10-03 1936-02-18 Anaya Cliserio Bottle closure
US1973758A (en) * 1933-10-14 1934-09-18 Philip P Gray Milk bottle cap
US2409460A (en) * 1936-07-18 1946-10-15 Harry F Waters Manufacture of containers
US2167783A (en) * 1937-10-09 1939-08-01 Bennett Inc Bottle closure or the like and paperboard therefor
US2367250A (en) * 1941-05-02 1945-01-16 Crown Cork & Seal Co Method of making caps
US2420215A (en) * 1944-11-04 1947-05-06 Julian T Lett Stacking cups and container for same
US2487400A (en) * 1947-06-02 1949-11-08 Earl S Tupper Open mouth container and nonsnap type of closure therefor
US2494047A (en) * 1948-03-09 1950-01-10 A H Wirz Inc Affixing liners to caps
US2606586A (en) * 1949-06-03 1952-08-12 Crown Cork Specialty Corp Container

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2875806A (en) * 1955-11-28 1959-03-03 Quaker Stretcher Company Laundry cart with plastic basket
US2880859A (en) * 1956-07-30 1959-04-07 Tupper Corp Receptacles having forced or snapped-in covers
US3120912A (en) * 1960-03-28 1964-02-11 Lily Tulip Cup Corp Pitchers and the like covered dispensing containers
US3086544A (en) * 1960-10-12 1963-04-23 Gen Motors Corp Check valve
US3172562A (en) * 1963-03-18 1965-03-09 Shell Oil Co Stackable container
US3270875A (en) * 1965-05-03 1966-09-06 Procter & Gamble Removable cover for display package
US3417614A (en) * 1966-02-21 1968-12-24 Illinois Tool Works Liquid level indicator
US3424004A (en) * 1966-02-21 1969-01-28 Illinois Tool Works Liquid level indicator
US3443436A (en) * 1966-07-11 1969-05-13 Leopold Co Inc F B Meter housing structure
US3398847A (en) * 1967-04-06 1968-08-27 Edward J. Towns Container and safety closure therefor
US3417615A (en) * 1967-04-26 1968-12-24 Illinois Tool Works Liquid level indicator
US3491914A (en) * 1968-06-07 1970-01-27 Kalamazoo Plastics Co Expanded plastic container having rigid internally press-fit cover
US3749276A (en) * 1970-01-14 1973-07-31 Sweetheart Plastics Container and closure
US3768689A (en) * 1972-04-24 1973-10-30 J Gauthier Environmental collection box
EP0337715A2 (en) * 1988-04-12 1989-10-18 Kingsley Nominees Pty. Ltd. Container closure
EP0337715A3 (en) * 1988-04-12 1990-06-27 Kingsley Nominees Pty. Ltd. Container closure
US5069353A (en) * 1988-11-21 1991-12-03 Lyonnaise Des Eaux Housing for fiber-bundle filter modules
US5085339A (en) * 1990-10-01 1992-02-04 Polystar Packaging, Incorporated Reclosable container closure
WO1999035045A1 (en) * 1998-01-07 1999-07-15 Dispensing Containers Corp Resealable easy open closure and can
US6193094B1 (en) * 1998-01-07 2001-02-27 George B. Diamond Resealable easy open closure and can
US6261523B1 (en) * 1999-04-27 2001-07-17 Agilent Technologies Inc. Adjustable volume sealed chemical-solution-confinement vessel
US20050247712A1 (en) * 2002-07-26 2005-11-10 Wallis Andrew J Peelable lid structure
US7766183B2 (en) * 2002-07-26 2010-08-03 Crown Packaging Technology, Inc. Peelable lid structure
US20090057311A1 (en) * 2007-09-03 2009-03-05 Lie Chien-Chang Environmental protection paper cup with a cover

Similar Documents

Publication Publication Date Title
US2767754A (en) Plastic container
US3077284A (en) Interlocking container and cover arrangement
US3679088A (en) Press type closure
US3487972A (en) Container
US3326408A (en) Plastic box container
US3128903A (en) crisci
US3556338A (en) Resilient closure having invested recess securing means
US4183446A (en) Food container with integral dish and cover
US8376177B2 (en) Container having sealable discrete compartments
US3606074A (en) Multiple purpose gripping lid
US4390113A (en) Container lid having vent means
US3424334A (en) Stacking box construction with interlock
US8074830B2 (en) Reclosable container and closure therefor
US3421653A (en) Container closure
US2914104A (en) Plastic container
JP5938505B1 (en) Packaging container
DK160239B (en) ELASTIC PLASTIC LAYER
GB1574680A (en) Container
US3743131A (en) Closure for open-mouthed containers or tubular vessels
US2947463A (en) Closure lids for paper containers
JP3513644B2 (en) Food containers
US4146170A (en) Container cover
US3863833A (en) Storage Container For Meat Or Poultry Products
US6478181B1 (en) Shrinkable tray with attachable lids
US4863059A (en) Utility box construction and ring therefor