Including A Polygonal, Nonrectangular Wall Patents (Class 229/108)
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Publication number: 20080110965Abstract: A packaging container for containing an object includes a substantially square-shaped first sheet member and a substantially square-shaped second sheet member overlaid on one another and forming four sides. At least one of the four sides forms an opening from which the object can be inserted. The packaging container also includes a first flap adjacent to the first sheet member through a first fold line at the opening, including a first cover piece to cover one half of the opening when folded, and a second flap adjacent to the second sheet member through a second fold line at the opening, including a second cover piece to cover another half of the opening when folded. The first flap and the second flap are provided at the opening so as not to overlap each other, and the first cover piece and the second cover piece cover substantially all the opening when folded.Type: ApplicationFiled: October 4, 2007Publication date: May 15, 2008Inventor: Tomoaki Arai
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Publication number: 20070199981Abstract: A carton with a generally open top and bottom end includes front and back panels foldably connected by side panels. The side panels have corner panels adapted for forming webbed corners of the carton for holding a food product in the carton.Type: ApplicationFiled: February 28, 2007Publication date: August 30, 2007Inventor: Steven Manuel Oliveira
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Patent number: 6935503Abstract: A self-telescoping storage enclosure comprises a first tray that includes a bottom wall, and a major wall, a minor wall, a right wall, a left wall extending up from the bottom wall. The major wall and the minor wall each having an outer surface. The left wall and the right wall each have a notch. The outer surface of the major wall defines a first major outer width, and the outer surface of the minor wall defines a first minor outer width, the first major outer width being greater than the first minor outer width. The first tray can nest with a second tray substantially similar to the first tray that is inverted and oriented 180° relative to the first tray by the inter-engagement of their respective notches.Type: GrantFiled: October 1, 2003Date of Patent: August 30, 2005Assignee: Rubbermaid IncorporatedInventor: Christopher L. Phan
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Patent number: 6929171Abstract: A reclosable container is illustrated and described, having a rectangular base, four lateral surfaces positioned essentially perpendicularly to one another (body surfaces (1, 3)), a head region, sealed using a rib seam (5) after the container is filled, and a closure element (8), positioned on a slanted surface (7) in the head region, in which the container volume can be used optimally without losing the advantages of the known container in regard to production, filling, and sealing. The container is folded in this case so that the slanted surface (7) carrying the closure element (8) at least partially projects out of the rectangular profile predetermined by the base, so that the body surface (1) located below the closure element has a protuberance and the body surface lying opposite the projecting body surface (1) has a corresponding indentation, at least in the head region.Type: GrantFiled: September 29, 2000Date of Patent: August 16, 2005Assignee: SIG Combibloc Systems GmbHInventor: Georg Thiersch
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Patent number: 6895898Abstract: A pet house substantially formed from a unitary blank of material, foldable from a collapsed state for shipping and storage to an erect state for use. The house includes a bottom having four edges. The house also includes first and second side walls and first and second end walls. The side walls are attached to one another forming an apex at the top of the house. One end wall includes an opening to permit the pet to ingress and egress the house. The bottom includes a slot near one edge for receiving a locking tab which extends from one of the side walls. Fasteners are provided for attaching the first and second end walls to the first and second side walls.Type: GrantFiled: January 20, 2004Date of Patent: May 24, 2005Inventor: Gerald C. Kitch
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Patent number: 6786394Abstract: A unitary bulk container is described having an inner sleeve (10) and an outer sleeve (12). The inner sleeve (10) has opposed side panels (22), (24) and two sets of opposed end panels. The outer sleeve (12) has opposed side panels (62), (66) and opposed end panels (60), (64). As assembled, the inner sleeve (10) is positioned within the outer sleeve (12) with either the inner sleeve side or end panels being adhered to the outer sleeve side or end panels. The other of the inner and outer sleeve side or end panels are not adhered to one another. The outer sleeve (12) of the assembled container preferably has a four-sided shaped, though at least two of its upright corners do not form true 90 degree angles. The container is capable of assuming a flat unitary collapsed state and an open unitary erected state. The container is initially formed to its flat unitary collapsed state.Type: GrantFiled: March 18, 2002Date of Patent: September 7, 2004Assignee: Weyerhaeuser CompanyInventor: Robert C. Prince
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Patent number: 6749107Abstract: A container made from corrugated paperboard has more than four sides and is constructed to resist distortion when force is applied to the ends or sides of the container, and also to resist crushing when containers are stacked on top of one another. In one embodiment, the container has six sides, with two side walls, two end walls, and two diagonally opposed diagonal corner panels and two diagonally opposed square corners. In another embodiment, the container has seven sides, with two side walls, two end walls, and three diagonal corner panels and one square corner. In a further embodiment, the container has eight sides, with two side walls, two end walls, and four diagonally opposed diagonal corner panels. In this embodiment, the diagonal corner panels are oriented so that they subtend an angle of from about 35° to about 40°, and preferably 38°, with respect to the longitudinal axis of the container.Type: GrantFiled: March 4, 2003Date of Patent: June 15, 2004Assignee: International Paper CompanyInventor: Benjamin Quaintance
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Patent number: 6651873Abstract: A container made from corrugated paperboard has at least one mitered corner, with an extended edge portion of one of the container walls extending beyond the mitered corner. A bag cuff grab is formed on the extended edge portion to engage and at least temporarily hold in position a bag placed in the container while product is placed in the bag and container. In one embodiment, the container has six sides, with two side walls, two end walls, and two mitered corners. In another embodiment, the container has seven sides, with two side walls, two end walls, and three mitered corners. In a third embodiment, the container has eight sides, with two side walls, two end walls, and four mitered corners. A bag cuff grab can be formed on an extended edge portion at only one or all of the mitered corners, and can be limited to two bag cuff grabs on extended edge portions at diagonally opposite mitered corners. In a preferred embodiment, the bag cuff grab is a notch formed in the extended edge portion.Type: GrantFiled: July 25, 2002Date of Patent: November 25, 2003Assignee: International Paper CompanyInventor: Benjamin Quaintance
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Patent number: 6598737Abstract: A suture dispenser box is provided that has an angled design such that the suture dispenser box may be received in at least two differently formatted storage racks. The suture dispenser box has a plurality of panels including at least two panels that have approximately a parallelogram shape.Type: GrantFiled: July 5, 2001Date of Patent: July 29, 2003Assignee: Ethicon, Inc.Inventor: James J. Rudnick
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Patent number: 6598785Abstract: A container made from corrugated paperboard has more than four sides and is constructed to resist distortion when force is applied to the ends or sides of the container, and also to resist crushing when containers are stacked on top of one another. In one embodiment, the container has six sides, with two side walls, two end walls, and two diagonally opposed diagonal corner panels and two diagonally opposed square corners. In another embodiment, the container has seven sides, with two side walls, two end walls, and three diagonal corner panels and one square corner. In a further embodiment, the container has eight sides, with two side walls, two end walls, and four diagonally opposed diagonal corner panels. In this embodiment, the diagonal corner panels are oriented so that they subtend an angle of from about 35° to about 40°, and preferably 38°, with respect to the longitudinal axis of the container.Type: GrantFiled: July 25, 2002Date of Patent: July 29, 2003Assignee: International Paper CompanyInventor: Benjamin Quaintance
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Patent number: 6595409Abstract: A method is provided of calculating a development plan of a paper container of deep bottom integrally formed from a single-sheet blank. An annular rule line 6 constituting a regular polygonal shape is formed at the center of a single-sheet blank to constitute the bottom face of the paper container, and divided faces 5 to constitute the outside of the peripheral face of the paper container are formed on the outside of the annular rule line 6. The blank portions between the divided faces 5 constitute inner pleated faces 4. Each of the blank portions is folded downwards along the rule line 7 and folded upwards along the line 9, so that the blank portion is folded to define two triangles 8 with an angle &phgr; and the overlapping portions thus obtained constitute an inner wall face 4.Type: GrantFiled: April 17, 2001Date of Patent: July 22, 2003Assignee: Kuramae Sangyo Co., Ltd.Inventors: Masaru Hashimoto, Yasuhiro Ohara
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Publication number: 20030116612Abstract: Packets of cigarettes (2) sold in multiples are wrapped in a rigid carton (1) with a predominating longitudinal axis (L) that extends parallel to the longitudinal axes (7) of the single packets (2) and presents a prismatic shape of polygonal section.Type: ApplicationFiled: December 18, 2002Publication date: June 26, 2003Inventors: Roberto Polloni, Chiara Colo
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Publication number: 20030019920Abstract: A container made from corrugated paperboard has more than four sides and is constructed to resist distortion when force is applied to the ends or sides of the container, and also to resist crushing when containers are stacked on top of one another. In one embodiment, the container has six sides, with two side walls, two end walls, and two diagonally opposed diagonal corner panels and two diagonally opposed square corners. In another embodiment, the container has seven sides, with two side walls, two end walls, and three diagonal corner panels and one square corner. In a further embodiment, the container has eight sides, with two side walls, two end walls, and four diagonally opposed diagonal corner panels. In this embodiment, the diagonal corner panels are oriented so that they subtend an angle of from about 35° to about 40°, and preferably 38°, with respect to the longitudinal axis of the container.Type: ApplicationFiled: July 25, 2002Publication date: January 30, 2003Applicant: INTERNATIONAL PAPER COMPANYInventor: Benjamin Quaintance
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Publication number: 20030019919Abstract: A container made from corrugated paperboard has at least one mitered corner, with an extended edge portion of one of the container walls extending beyond the mitered corner. A bag cuff grab is formed on the extended edge portion to engage and at least temporarily hold in position a bag placed in the container while product is placed in the bag and container. In one embodiment, the container has six sides, with two side walls, two end walls, and two mitered corners. In another embodiment, the container has seven sides, with two side walls, two end walls, and three mitered corners. In a third embodiment, the container has eight sides, with two side walls, two end walls, and four mitered corners. A bag cuff grab can be formed on only one or all of the mitered corners, and can be limited to two bag cuff grabs on diagonally opposite mitered corners. In a preferred embodiment, the bag cuff grab is a notch formed in the extended edge portion.Type: ApplicationFiled: July 25, 2002Publication date: January 30, 2003Applicant: INTERNATIONAL PAPER COMPANYInventor: Benjamin Quaintance
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Patent number: 6481617Abstract: A barrel has a sector-shaped main board and a polygonal base board. A plurality of periphery plates are disposed on a periphery of the polygonal base board. Each periphery plate has a periphery folding line and a round hole. The sector-shaped main board has a plurality of longitudinal folding lines, a connection plate, a plurality of rectangular plates, and a plurality of decoration plates. Each rectangular plate has a slot. Each decoration plate has a transverse folding line and an insertion protrusion. The connection plate and one of the rectangular plates are fastened together. Each periphery plate and each rectangular plate are fastened together by a bolt and a nut.Type: GrantFiled: March 21, 2001Date of Patent: November 19, 2002Inventor: Zhi-Yuan Yang
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Patent number: 6412686Abstract: The present invention is directed to a thermal insulating sleeve for a container that is easily converted from a generally planar configuration during periods of nonuse and into an expanded or open configuration for receiving a container during periods of use. In a preferred embodiment of the invention, the thermal insulating sleeve comprises a plurality of side panels defining a generally tubular body positioned about an imaginary longitudinal axis having an open first end and a second end forming a central cavity therein. Circumferential positioned about the open first end and equally spaced one from another, is a plurality of fingers that extend generally radially inwardly into the central cavity and are angled generally downwardly with respect to the tubular body and are effective for stabilizing the container within the central cavity and for providing an insulating layer of air between the container and the tubular body.Type: GrantFiled: January 5, 2000Date of Patent: July 2, 2002Assignee: Designmahl Ltd.Inventors: Robert R. Mahl, James M. Newman
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Patent number: 6305533Abstract: A convertible shoe box and display platform has assembled and disassembled configurations for storing and displaying a pair of shoes. Such box assembly includes a first, container portion, a second, lid portion adapted to cover the container portion, and thereby enclose the pair of shoes within the assembled box, and tabs for positioning the disassembled box as a display platform with the pair of shoes remaining in the container portion. In such a manner, the pair of shoes is effectively displayed for sale.Type: GrantFiled: August 24, 1998Date of Patent: October 23, 2001Assignee: Wal-Mart Stores, Inc.Inventors: Rod Welty, Joe Trybulec, Mark Hill, Dana Daniels
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Patent number: 6230917Abstract: A two-piece, lockable, wedge-shaped container is disclosed which includes a tray portion having upstanding peripheral walls, the front wall of which is higher than the other side walls, and a sleeve portion having a top wall for covering the tray, a smaller bottom wall and a front opening. When fully inserted into the sleeve, the tall front wall of the tray deforms the sleeve top wall and front opening as it passes therethrough, and prevents the tray from being removed from the sleeve thereby locking the tray and sleeve together.Type: GrantFiled: August 24, 2000Date of Patent: May 15, 2001Assignee: Dopaco, Inc.Inventor: Simon Whitnell
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Patent number: 5984168Abstract: The present invention is directed to a one piece blank of foldable sheet material cut and scored so that it is divided into a series of connected wall forming panels which when assembled provides a trio of diamond shaped cartons for packaging articles, each carton connected to another carton by a common edge. The present invention is also directed to a one piece trio of diamond shaped cartons for packaging articles, each carton connected to another carton by a common edge.Type: GrantFiled: May 21, 1998Date of Patent: November 16, 1999Assignee: International Paper CompanyInventor: Mitchell Clark
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Patent number: 5950831Abstract: The present invention is a holder for a bottled beverage which is constructed from a cardboard blank. The blank defines a plurality of panels which are folded and locked together to form an interior for receiving a bottled beverage. The holder may be decorated or personalized for presentation as a gift.Type: GrantFiled: December 31, 1996Date of Patent: September 14, 1999Assignee: Garcon| Brands LimitedInventor: Stephane Millet
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Patent number: 5918797Abstract: A pizza box blank having a special double-panel wall structure and a non-centrally-positioned interlock receptor means that allows the inner panel of the double-panel wall structure to be formed into a special shape that, in turn, allows the box blank to be made with less material than would be required if the blank contained a conventional double-panel wall structure and interlock receptor means.Type: GrantFiled: October 20, 1997Date of Patent: July 6, 1999Inventor: John D. Correll
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Patent number: 5833130Abstract: A versatile multi-function pizza carton capable of assuming a variety of configurations and of providing various features and functions. Specific disclosed structure includes double-panel V-walls, convertible side walls, convertible cover flaps, fall-back side walls, fall-back-wall retention means, wall-angling fold line, easy-tear corner fold line, and thermal-legs.Type: GrantFiled: October 16, 1996Date of Patent: November 10, 1998Inventor: John D. Correll
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Patent number: 5791554Abstract: A clamshell type paperboard container formed from a unitary blank of paperboard. Two embodiments are described. In the first, the container is square and the lid includes four triangular panels meeting at an elevated and central common point. In the second, the container in rectangular and the lid includes two triangular panels and two trapezoidal panels, and the central elevated portion of the lid includes an elongated ridge or rib. These constructions prevent stacking and hence inadvertent crushing of a closed and filled container. The slanting sides of the lids yield an easel effect for graphics thereon.Type: GrantFiled: June 26, 1997Date of Patent: August 11, 1998Assignee: International PaperInventor: Kurt D. Jensen
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Patent number: 5531373Abstract: A blank and carton formed therefrom including a pentagon-shaped bottom panel, first, second and third side wall panels integral with three edges of the bottom panel with fold lines defined therealong, fourth and fifth side wall panels integral with opposed edges of the third side wall panel, a top panel integral with the outer edge of the third side wall panel opposed from the bottom panel along a defined fold line, and glue flaps on selected edges of the panels whereby upon a folding of the panels an erected receptacle with folding lid is formed.Type: GrantFiled: November 21, 1994Date of Patent: July 2, 1996Assignee: Dopaco, Inc.Inventor: Larry Eisman
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Patent number: 5476215Abstract: A paperboard blank is provided which can be assembled into a self-supporting food holder for a pita bread sandwich or the like. The paperboard blank has a generally pentagonal main panel defined by score lines. Rear left-side and right-side rip-away extension panels are attached to the pentagonal rear main panel along a left-upper score line and right-upper score line, respectively. A left-side and right-side front panel are attached to the rear main panel along a left-lower score line and a right-lower score line, respectively. A front left-side rip-away extension panel and a front right-side rip-away extension panel are attached to the front panels along score lines. A stand panel is attached to the rear main panel along a center-lower score line, having (i) a center portion which is foldable to partially overlap the right-side and left-side front panels in the assembled food holder, and (ii) a stand portion which is foldable to form an integral stand to support the assembled food holder.Type: GrantFiled: January 20, 1995Date of Patent: December 19, 1995Inventor: Carum Baroud
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Patent number: 5400955Abstract: Box of sheet material, such as cardboard or corrugated cardboard, including square or rectangular lateral faces, in pairs, connected by a folding line. The folding lines are mutually parallel and the lateral faces forming a right-angled parallelepiped (pa). This box includes other lateral faces forming a pyramid (py) adjoined by its base to the parallelepiped. It is obtained from a blank of sheet material including triangular or trapezoidal panels hinged to rectangular or square panels.Type: GrantFiled: February 5, 1993Date of Patent: March 28, 1995Assignee: OtorInventors: Guy Coalier, Jean-Yves Bacques
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Patent number: 5314113Abstract: A support for consumption of an elongated food such as hot dogs is a simple structure starting with fold lines and cuts in a sheet of flexible and impermeable material such as paper, plastic coated paper or plastic sheet. It comprises a substantially rectangular base with a rear section defining a vertex from which side walls are attached. One side wall is provided with a cut and another side wall is provided with an indentation and a fold line in its middle section. This side wall has approximately twice the length of the first side wall.Type: GrantFiled: September 29, 1992Date of Patent: May 24, 1994Assignee: Grupoutil Desenvolvimento de Produtos de/Utilidade Ltda.Inventors: Fabio Irigoite, Breno S. Mallmann
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Patent number: 5253799Abstract: A system for construction of a multi-sided solid shaped carton, package, or similar multi-sided structure including a flat blank having multiple polygon shaped faces, each face hingably connected to at least one other face, having free edges of the faces connectable to free edges of other faces to form a multi-sided carton, a first edge forming element for connecting a first pair of free edges with a first degree of holding force, and a second edge forming element for connecting a second pair of free edges with a second degree of holding force which is greater than said first degree of holding force. A unique symbol code is used for drawing attention to the preferred starting point of construction, for designating the appropriate correspondence between tab and slotted flap edge forming elements, and for designating the preferred order of assembly.Type: GrantFiled: September 20, 1990Date of Patent: October 19, 1993Inventor: Edward H. Sebesta
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Patent number: 4962859Abstract: A fold-up blank die cut from a planar sheet of thin plastic material is readily assembled into a literature display box having rectangular bottom, front and rear walls with the rear wall being substantially higher. The side edges of the bottom wall include fold-up slit forming tabs, and the front and back walls both include side wall panels which on the edges contiguous with the bottom wall have arrowhead tabs which may be inserted into the respective slits as the front and back walls are folded up and the side wall panels folded toward each other. The side wall panels on the front wall overlap the side wall panels on the back wall, with the latter including rearwardly inclined outer edges against which the front wall abuts, and which forms a substantial continuation of the side edges of the front wall.Type: GrantFiled: April 10, 1989Date of Patent: October 16, 1990Assignee: Gerald Conway & CompanyInventor: Danny J. Kump
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Patent number: 4940200Abstract: A support is provided for supporting a container, such as a plastic trashbag, which is generally incapable of supporting itself in an open, upright position. The support is formed from a unitary, sheet-like blank, which is scored in at least five places to form a series of at least five axially-extending, generally parallel fold lines. The at least five fold lines define at least six panels, including a first panel, a last panel, and at least four intermediate panels. Each of the panels include a top edge, a bottom edge, a first side edge portion, a second side edge portion, an interior surface, and an exterior surface. The at least six panels are hingedly connected along the at least five fold lines to place the at least six panels in a side-by-side relation. Staples are provided for securing the first side edge portion of the first side panel to the second side edge portion of the last panel.Type: GrantFiled: January 13, 1989Date of Patent: July 10, 1990Assignee: Wilmarc, Inc.Inventors: W. David Sawyer, Mark W. Sawyer
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Patent number: 4910913Abstract: A blank, stored in a flat condition including fold lines and cuts to form a paper vase having a flat triangular bottom, tapered sides and an irregular sculptured upper edge.Type: GrantFiled: April 4, 1989Date of Patent: March 27, 1990Inventor: Ken M. Streeter
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Patent number: 4871080Abstract: The invention relates to the creation of three dimensional objects from elements or blanks produced by inscribing inwardly and outwardly extending circles about a plurality of polygons, such as isoceles triangles, rectangles, or trapezoids of four, six or other even numbered sides through each point where the sides of the polygons intersect. To provide the appropriate arc lengths, the inscribed circles have the same diameter as the length of the side of the polygon where the arcs are to be inscribed. The element is bent or folded along each arc to form the three dimensional object. Multiple elements can be jointed for form complex elements by superimposing individual elements upon a portion of adjacent elements. The objects thus formed can be held together by forces generated by the folded arcs, although an adhesive may optically be used. The elements, three dimensional objects, and methods of making same also form part of this invention.Type: GrantFiled: September 4, 1987Date of Patent: October 3, 1989Inventor: Herbert G. Bennett
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Patent number: 4863015Abstract: Flower package apparatus includes a blank with a plurality of fold lines, cut lines, and scored lines from which a flower package may be made. The flower package, when appropriately folded together includes three embodiments, all generally triangular in configuration. The three embodiments include a transport package, a bouquet holder, and a self standing or free standing vase. The generally triangular configuration includes three elongated sides, each of which includes elongated panels or portions and which are appropriately folded to define the different embodiments.Type: GrantFiled: September 16, 1988Date of Patent: September 5, 1989Inventor: Randall R. Toltzman
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Patent number: 4850528Abstract: A container with integral self-closing and self-locking foldable closure material above the container rim which is pleated with alternating internal and external folds. The geometry of the folds creates a spring action to the pleated folds as the top is folded which will `lock` resiliently in place when they are pushed beyond the rim of the container and will remain so, whether or not the panels are designed to meet in the center to completely close the container or are designed to leave a center opening when locked. While the container is closed a rod or tube may be inserted in any of the disclosed forms without opening or unlocking the closure.Type: GrantFiled: February 5, 1987Date of Patent: July 25, 1989Inventor: John P. Hanus
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Patent number: 4796802Abstract: The invention relates to a pack for filling materials which are capable of flow, comprising a tube which is formed by at least one longitudinal sealing seam and which has a bottom and a top mounted to the ends thereof, of which the top has a pouring opening in the vicinity of its outer edge, wherein the tube comprises carrier material, for example cardboard, which is coated with thermoplastic material at least on one side, and the bottom is quadrangular and is formed from the folded-over tube of the pack in the form of a fold closure.Type: GrantFiled: June 25, 1987Date of Patent: January 10, 1989Assignee: Tetra Pak Finance & Trading S.A.Inventor: Wilhelm Reil
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Patent number: 4768701Abstract: A decorative element typically constructed of paperboard coated with metallic foil and including a base of geometric form and a number of side panels extending away from the base at an angle so that a reflection of the base is apparent on the side panels and/or the reverse. Any designs incorporated on the base or side panels are also reflected providing a pleasing overall effect.Type: GrantFiled: March 23, 1987Date of Patent: September 6, 1988Inventor: Elbert S. Gabbard
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Patent number: 4756408Abstract: A display carton for use with articles which cannot independently support themselves in an upright position. The carton is formed so that the back panel forms an angle greater than 90.degree. with the bottom panel to allow such articles to lean back against the back panel. The front panel may also be at the same angle. The bottom is formed from flaps foldably attached to the front, side and bottom panels which function to automatically form the bottom panel when a carton sleeve is opened into carton shape.Type: GrantFiled: August 10, 1987Date of Patent: July 12, 1988Assignee: Manville CorporationInventor: Karl L. Grauf
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Patent number: 4682726Abstract: A collapsible, self-erecting pentagonal dodecahedron hollow structure formed from two integral blanks of paperboard, each of which is cut and scored to form a central pentagonal having integrally formed therewith five other generally pentagonal walls which are affixed to the respective ones of the edges of the central pentagonal by a score line. Each of the generally pentagonal walls has a triangular flap which is hingedly affixed by means of a score line along one of its edges so as to be disposed between adjacent ones of the pentagonal walls. A slide member is affixed to each of the triangular flaps and is disposed to extend beneath the adjacent pentagonal wall. Each of the pentagonal walls of one of the blanks has a foldable attachment flap affixed by a score line to the outwardmost edge thereof. Each of the pentagonal walls of the other one of the blanks has a foldable hook flap affixed by a score line to the outwardmost edge thereof.Type: GrantFiled: October 20, 1986Date of Patent: July 28, 1987Inventor: Fred Drueck, Jr.
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Patent number: 4667872Abstract: An open top liquid-tight, carton having a flat bottom wall and flat side and end walls joined to each other by rounded corners, the carton being formed from a unitary blank of foldable sheet material such as coated paperboard.Type: GrantFiled: December 26, 1985Date of Patent: May 26, 1987Assignee: Container Corp. of AmericaInventors: John D. Desmond, William H. Carr, Jr.
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Patent number: 4607785Abstract: A flat of fiberboard in knocked-down form for setting up into a tray which has strengthened corners. The flat consists of laminated strength-producing connecting corner tabs between hinged side-wall forming flaps. The tabs are formed on the ends of the flaps and some of the flaps are provided with angular fold lines which provide foldable sections in these flaps, the fold lines extending from the flap hinge lines of the respective flaps to a point within the flaps and a slit being provided from that point in each flap to the outer edge of the flap to permit folding of the foldable flap sections.Type: GrantFiled: April 19, 1985Date of Patent: August 26, 1986Assignee: Willamette IndustriesInventor: Thomas E. Croley