Pressure Responsive Contour Patents (Class 220/624)
  • Patent number: 10414085
    Abstract: The invention relates to a container (1) for receiving a liquid content, comprising a container wall (10) which surrounds a container interior (12) and comprises an opening (8). The container wall has an opening region (2) at the opening, a base region (4) arranged opposite the opening region, and a lateral region (3) which extends between the opening region and the base region, and the container wall has a dimensionally stable central region (22) in the base region and a flexible flat region (24) which encircles the central region. The container wall transitions from the central region into the flat region at an angle such that an edge (26) which encircles the central region is formed in the container wall between the central region and the flat region. The invention further relates to a blow mold (31) for producing such a container.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: September 17, 2019
    Assignee: KHS Corpoplast GmbH
    Inventors: Jens-Uwe Haubenschild, Arne Wiese, Christian Rommel
  • Patent number: 10016079
    Abstract: A lid structure is arranged for detachably coupled at a container body to enclose a container cavity thereof, wherein the lid structure includes a container lid and a protective component. The container lid has a drinking hole and an expansion membrane for creating a negative pressure within the container body when the container lid is sealed at the container body. The protective member has a fixed end extended from the container lid and a sealed end detachably engaged with the drinking hole to seal the drinking hole for prevent liquid spilling from the container cavity.
    Type: Grant
    Filed: May 31, 2016
    Date of Patent: July 10, 2018
    Inventors: Charles N. Chiang, Benjamin H. Chiang
  • Patent number: 9884714
    Abstract: Container made of a plastic material, provided with a base including a standing ring forming a support flange and a diaphragm extending from the standing ring to a central portion, the diaphragm being capable of standing in an outwardly-inclined position, the diaphragm connecting to the standing ring at an outer junction forming an outer articulation of the diaphragm with respect to the standing ring; the diaphragm connecting to the central portion at an inner junction forming an inner articulation of the diaphragm with respect to the central portion; the diaphragm being invertible with respect to the standing ring to an inwardly-inclined position; the central portion having a thickness greater than the diaphragm, the central portion having an annular section of greater thickness adjacent to the inner junction, the central portion having a central recess thinner than the annular section and protruding upwardly from an inner edge of the annular section.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: February 6, 2018
    Assignee: SIDEL PARTICIPATIONS
    Inventor: Florian Godet
  • Patent number: 9616483
    Abstract: A method of making a can end, which includes a recessed panel defined by an upwardly extending chuck wall, a peripheral scoreline disposed in a public side of the panel proximate to the base of the chuck wall, a tab fastened to the panel by a rivet, includes the step of employing tooling to form a pressure resistance bead extends around the panel inboard of the peripheral scoreline and outboard of the rivet. The tooling forms a saw tooth panel formation proximate to the pressure resistance bead inboard of the pressure resistance bead. Among other benefits, the pressure resistance bead and saw tooth panel formation created by the tooling and method combine to resist wrinkling or other undesired deformation of the can end.
    Type: Grant
    Filed: February 10, 2014
    Date of Patent: April 11, 2017
    Assignee: Stolle Machinery Company, LLC
    Inventor: Dennis C. Stammen
  • Patent number: 9016512
    Abstract: A storing container has a container body having a storage part and a bottom, the storage part having an opening in a distal end of the storage part, the bottom closing a basal end portion of the storage part, and a lid closing the opening in the distal end of the storage part. The storage part is made of a plastic film. The bottom is deformable between a first state and a second state. The bottom is convex in a direction from the distal end of the storage part to a basal end of the storage part in the first state.
    Type: Grant
    Filed: September 27, 2010
    Date of Patent: April 28, 2015
    Assignee: Hosokawa Yoko Co., Ltd.
    Inventors: Toru Ichikawa, Koki Abe
  • Patent number: 9016034
    Abstract: An easily openable can end and associated methods include an end panel, a score line formed in the end panel to define a prearranged opening area, a tab, the tab having a handle and a rivet securing the tab to the end panel. In particular, the end panel of the can end is provided with at least one moveable portion contactable with the lower surface of the tab at a location between the rivet and the end of the handle of the tab, the moveable portion being deformable upwardly under influence of pressure to push against the lower surface of the tab and thereby incline the handle of the tab away from the end panel to define a gap under the tab.
    Type: Grant
    Filed: August 6, 2009
    Date of Patent: April 28, 2015
    Assignee: Crown Packaging Technology, Inc.
    Inventor: Jason John Hall
  • Patent number: 8998026
    Abstract: A synthetic resin bottle has a cylindrical shape with a bottom, and a bottom wall portion that includes a grounding portion located at an outer circumferential edge, a rising circumferential wall portion that is connected from an inner side to the grounding portion and extends upward, an annular movable wall portion protruding from an upper end of the rising circumferential wall portion toward the bottle radial inner side, and a recessed circumferential wall portion between the bottle radial inner side and the movable wall portion. The movable wall portion is free to rotate around a portion connected to the rising circumferential wall portion so as to move the recessed circumferential wall portion in an upward direction. The rising circumferential wall portion extends to be gradually inclined toward the bottle inner side, and an inclined angle thereof is equal to or less than 10° with respect to a bottle axis.
    Type: Grant
    Filed: July 25, 2012
    Date of Patent: April 7, 2015
    Assignee: Yoshino Kogyosho Co., Ltd.
    Inventors: Tadayori Nakayama, Goro Kurihara, Hiroaki Imai
  • Patent number: 8973780
    Abstract: A can end for a two-piece beverage can is described. The can end has a center panel positioned about a vertical center axis. The center panel has a means for opening the can end located on a public side. A circumferential strengthening member is located about the center panel. A wall extends upwardly from the circumferential strengthening member. A curl is joined to an upper end of the wall. The curl defines an outer perimeter of the can end. A reinforcing bead is located on the wall between an uppermost portion of the wall and a lowermost portion of the wall.
    Type: Grant
    Filed: August 10, 2007
    Date of Patent: March 10, 2015
    Assignee: Rexam Beverage Can Company
    Inventors: Randall G. Forrest, Timothy L. Turner
  • Patent number: 8967411
    Abstract: A pressure relief device of domed construction for venting an internally pressurized container. The pressure release device includes a coined pressure vent and is characterized by a relatively high venting pressure in combination with a failure pressure in the absence of venting which is higher than the intended venting pressure. The pressure relief device includes a sloped sidewall having an outer annular segment and a sloped annular intermediate segment. The sloped annular intermediate segment has a width dimension greater than the width dimension of the outer annular segment. A circular central plateau defines a flat dome top. The circular central plateau has a center point with an arc shaped coin line extending about an arc with the apex of the arc positioned at the center point of the circular central plateau.
    Type: Grant
    Filed: June 3, 2011
    Date of Patent: March 3, 2015
    Assignee: Illinois Tool Works Inc.
    Inventors: Mark A. Ferreira, Yurij F. Wowczuk, Richard A. Henry
  • Patent number: 8746494
    Abstract: Disclosed is a synthetic resin container provided with an inverting, foldback bottom wall that can maintain a stable, self-supporting position while being able to minimize the amount of residual contents, and that can be formed by blow-molding, etc., and maintain the favorable producibility or low cost of the past. The synthetic resin container is provided with a bottom wall that forms the bottom of the container, and a drum section that is united to the perimeter of the bottom wall and forms a filling space M for contents on the inside, and is a synthetic resin container wherein a raised bottom is formed by inverting and folding back said bottom wall toward said drum section. Said drum section has a lower peripheral wall that touches or approaches the outer wall part of said bottom wall and forms a self-supporting base by the inversion and folding back of said bottom wall.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: June 10, 2014
    Assignee: Yoshino Kogyosho Co., Ltd.
    Inventors: Shigeru Hayakawa, Yoshiharu Kitamura, Kazuo Suzuki
  • Patent number: 8662332
    Abstract: A blow molded plastic container for hot fill and pasteurization uses includes a main body portion that is shaped so as to be substantially round in horizontal cross-section and a base portion. The base portion is shaped to define a generally circular standing ring and an elevated push-up portion that is positioned radially inward of the standing ring. The push-up portion includes a central region, an annular, substantially straight and substantially vertical rise portion that is positioned immediately radially inward of the standing ring and a plurality of radially oriented waves. Each of the waves extends radially outwardly from the central region to the vertical rise portion and is preferably shaped so as to subtend a substantially constant angle along its length.
    Type: Grant
    Filed: October 6, 2009
    Date of Patent: March 4, 2014
    Assignee: Graham Packaging Company, L.P.
    Inventors: Michael P. Wurster, Justin A. Howell, Michael T. Kelly, Robert Waltemyer, Benton A. Lewis
  • Patent number: 8590729
    Abstract: A plastic container is provided having a container body and a closed base. The base includes a base body and a plurality of deflection ribs configured to buckle as the base deforms in response to an increase in negative pressure internal to the container.
    Type: Grant
    Filed: March 27, 2009
    Date of Patent: November 26, 2013
    Assignee: Constar International LLC
    Inventors: Satya Kamineni, Michael R. Mooney, Monis Bangi
  • Patent number: 8584879
    Abstract: A plastic container comprises an upper portion including a finish defining an opening into the container, a lower portion including a base defining a standing surface, a sidewall extending between the upper portion and the lower portion, the sidewall defining a longitudinal axis, and at least one substantially transversely-oriented pressure panel located in the lower portion. The pressure panel is movable between an outwardly-inclined position and an inwardly-inclined position to compensate for a change of pressure inside the container. The standing surface defines a standing plane, and the entire pressure panel is located between the standing plane and the upper portion of the container when the pressure panel is in the outwardly-inclined position.
    Type: Grant
    Filed: February 9, 2007
    Date of Patent: November 19, 2013
    Assignee: Co2pac Limited
    Inventors: David Melrose, John Denner, Paul Kelley, Gregory Trude
  • Patent number: 8511506
    Abstract: A transport case 1 with hinged side parts 3, 4 made of plastic is provided, whereby the height of the hinged side parts 3, 4 is greater than 16 centimeters or the permissible load of the transport case is greater than 16 kg, and wicket-shaped hollow stiffening strips 11, 12 are present in the hinged side parts 3, 4. The stiffening strips 11, 12 formed by injection of liquid have a surface roughness that is less than 10 micrometers.
    Type: Grant
    Filed: January 6, 2011
    Date of Patent: August 20, 2013
    Assignee: IFCO Systems GmbH
    Inventor: Werner Ringler
  • Patent number: 8496132
    Abstract: A can end having a countersink bead, an inclined chuck wall and a strong seam, resists distortion from its circular profile when subjected to thermal processing or when packaging carbonated beverages. This high hoop strength affects the manner in which the can end ultimately fails when placed under extreme abuse conditions, even if buckle pressure performance is within industry specified standards. The can end of the invention has control features introduced which control the failure mode whilst maintaining specified buckle pressure performance. In one embodiment, the can end has a two part wall and a control feature that comprises expansion of the countersink bead to act as a trigger for local peaking, together with a groove in the chuck wall which prevents the peaking force from being concentrated at a single point which could result in leaking by the production of a pin hole.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: July 30, 2013
    Assignee: Crown Packaging Technology, Inc.
    Inventors: Martin J. Watson, Brian Fields, Andrew Robert Lockley
  • Patent number: 8240501
    Abstract: A closure for a food can including a foil end panel bonded to an intermediate ring which is fixed to the can body. The foil panel comprises a diaphragm having a centre panel which included at least one concentric bead. The profile of this beaded panel is selected so that its downward position is no greater than the lowest point of the intermediate ring. The provision of the bead(s) reduces pressure differences experienced by the diaphragm, particularly during processing of the can contents, due to the volume increase available from the beads.
    Type: Grant
    Filed: June 22, 2004
    Date of Patent: August 14, 2012
    Assignee: Crown Packaging Technology, Inc.
    Inventor: Paul Charles Claydon
  • Patent number: 8157119
    Abstract: A can end having a countersink bead, an inclined chuck wall and a strong seam, resists distortion from its circular profile when subjected to thermal processing or when packaging carbonated beverages. This high hoop strength affects the manner in which the can end ultimately fails when placed under extreme abuse conditions, even if buckle pressure performance is within industry specified standards. The can end of the invention has control features introduced which control the failure mode whilst maintaining specified buckle pressure performance. In one embodiment, the can end has a two part wall and a control feature that comprises expansion of the countersink bead to act as a trigger for local peaking, together with a groove in the chuck wall which prevents the peaking force from being concentrated at a single point which could result in leaking by the production of a pin hole.
    Type: Grant
    Filed: September 1, 2009
    Date of Patent: April 17, 2012
    Assignee: Crown Packaging Technology, Inc.
    Inventors: Martin J. Watson, Brian Fields, Andrew Robert Lockley
  • Publication number: 20110031257
    Abstract: The present invention concerns a pressure container (1) with a jacket comprising partial cylindrical jacket shells (2, 4) that are located parallel next to each other and define a bead (8, 10) in the longitudinal direction. The end faces thereof are closed off by a curved bottom (16, 18), wherein between the partial cylindrical shells (2, 4) a tractive element designed in particular as a flat wall (6; 6a, 6b) is arranged, the upper or lower edge (12, 14) of which extends into or penetrates the upper or lower bead region (8, 10). There is furthermore provided a shell element (42) running in the longitudinal direction and connecting the jacket shells (2, 4) and the tractive element (6), being firmly connected at least in sections to the jacket shells (2, 4) and to the particularly beveled edge (12, 12a; 14, 14a) of the tractive element (6), so that a girder structure is formed in the bead region (8, 10).
    Type: Application
    Filed: December 21, 2009
    Publication date: February 10, 2011
    Applicant: WEW Westerwalder Eisenwerk GmbH
    Inventor: Rainer Metz
  • Publication number: 20100044399
    Abstract: An aerosol container (10) dispenses a fluid product under pressure. A pressure relief mechanism (30) vents the container in a controlled manner when the container is subjected to excessive pressure so to prevent the container from bursting. The container has a container body (12) of a hollow, generally cylindrical shape. Pressurized contents of the container are expelled through a valve assembly (18) installed at one end of the container. An end piece (22) attached to the container body at the other end of the container has a first circular shaped section (26) surrounded by a ring shaped outer section (28). The pressure relief mechanism comprises U-shaped score lines (32) formed across the transition between the two sections of the end piece. These score lines create lines of weakness in the material from which the end piece is made for the end piece to fracture along the score lines when the pressure within the container exceeds a predetermined pressure level.
    Type: Application
    Filed: August 20, 2008
    Publication date: February 25, 2010
    Applicant: DS CONTAINERS
    Inventors: Roger Dalan, Tom Nicoletto, Joe Koch
  • Patent number: 7201291
    Abstract: The present invention relates to a container for a flowable product, particularly for a beverage and, in particular, for still or sparkling mineral water. The container according to the invention includes a body having in a greater section a dimension d1 and of at least one neck with an internal diameter d2 which can be closed by a member for closing off and/or of distributing the flowable product from the container. The wall or walls forming the body of the container are preferably made of a flexible plastic which can deform for constant surface area, particularly under the weight of the flowable product from the container when the wall or walls encounter a point or bearing surface, so as to form, at least locally, a non-planar wall portion and wherein the ratio d2 to d1 is between 1:3 and 1:10.
    Type: Grant
    Filed: April 9, 2004
    Date of Patent: April 10, 2007
    Assignee: Nestle Waters Management & Technology
    Inventors: Murielle Vigny, Alain Contal, Jean-Paul Cerveny, Gérard Denis
  • Patent number: 6702142
    Abstract: A preferred embodiment of the disclosed can lid has a center panel having a central axis that is perpendicular to a diameter of the outer rim, or peripheral curl portion, of the can lid, an annular countersink surrounding the center panel, an arcuate chuckwall extending radially outward from the annular countersink, an arcuate step portion extending radially outward from the arcuate chuckwall, a transitional portion extending radially outward from the arcuate step portion, and a peripheral curl portion extending outwardly from the transitional portion.
    Type: Grant
    Filed: May 22, 2002
    Date of Patent: March 9, 2004
    Assignee: Metal Container Corporation
    Inventor: Christopher G. Neiner
  • Patent number: 6499622
    Abstract: A preferred embodiment of the disclosed can lid has a center panel having a central axis that is perpendicular to a diameter of the outer rim, or peripheral curl portion, of the can lid, an annular countersink surrounding the center panel, an arcuate chuckwall extending radially outward from the annular countersink, an arcuate step portion extending radially outward from the arcuate chuckwall, a transitional portion extending radially outward from the arcuate step portion, and a peripheral curl portion extending outwardly from the transitional portion.
    Type: Grant
    Filed: December 8, 1999
    Date of Patent: December 31, 2002
    Assignee: Metal Container Corporation, Inc.
    Inventor: Christopher G. Neiner
  • Patent number: 6460723
    Abstract: The present invention describes a beverage can end which utilizes less material and has an improved internal buckle strength based on the geometric configuration of an upper and lower chuck wall, inner panel wall and central panel, and having a unit depth to an outwardly concave countersink of at least about 0.215 inches.
    Type: Grant
    Filed: May 18, 2001
    Date of Patent: October 8, 2002
    Assignee: Ball Corporation
    Inventors: Tuan A. Nguyen, Jess N. Bathurst
  • Publication number: 20020134788
    Abstract: The present invention describes a beverage can end which utilizes less material and has an improved internal buckle strength based on the geometric configuration of an upper and lower chuck wall, inner panel wall and central panel, and having a unit depth to an outwardly concave countersink of at least about 0.215 inches.
    Type: Application
    Filed: May 18, 2001
    Publication date: September 26, 2002
    Inventors: Tuan A. Nguyen, Jess N. Bathurst
  • Patent number: 6173858
    Abstract: Two-piece cups formed, e.g., from a thermoformable plastics material, include a bottom wall disc which is bonded to an inwardly turned annular bottom flange of the side wall by an upwardly and inwardly sloped transition wall. The transition wall allows the bottom wall disc to be bonded to the sidewall flange in such a manner that the annular bottom edge is substantially unaffected by the heat and pressures during the bonding process. The bottom wall disc may be in the form of multiple concentrically disposed, annular bottom wall segments which are connected to one another by respective ones of a plurality of transition walls.
    Type: Grant
    Filed: February 8, 1999
    Date of Patent: January 16, 2001
    Assignee: Sweetheart Cup Company
    Inventors: David W. Norwood, Larry Maccherone
  • Patent number: 6138899
    Abstract: An inserted lid (1) for a box (2) is formed so that a contact region (5) can be pressed against the inside of the side wall of the box. In the non-inserted state, said side wall is slightly larger than the box opening (4). On insertion of the lid (1) into the box (2), the largest circumferential line of the contact region (5) must fit the inside of the side wall of the box as a result of an elastic deformation of the closure surface (3). To prevent the forces emanating on insertion from the side wall of the box from leading to irreversible deformations, the closure surface (3) has spring properties which are radial with respect to the contact region (5) and permit an elastic deformation of the contact region (5) in the radial direction. To ensure these spring properties, the closure surface (3) has a shape differing from a flat surface, in particular two concentric waves (7) formed constant distances away from the contact region (5) and/or a central vault (8).
    Type: Grant
    Filed: October 26, 1998
    Date of Patent: October 31, 2000
    Inventor: Werner Grabher
  • Patent number: 6045001
    Abstract: A truncated cone is disclosed for molding bottoms of plastic containers, such as PET bottles, into geometries which extend convexly inwardly, are thermostable during hot-washing, and allow substantially full visual inspection with minimum shadow effects. The truncated cone is in the form of a frustoconical bottom insert, which, in a first blow-molding step, creates an intermediate container with a bottom geometry having a substantially wavy cross section. The wavy cross section of the bottom geometry can be accentuated by means of a second mold with a plateau, which creates a slight, upper domed surface in the bottom geometry of the container molded thereby.
    Type: Grant
    Filed: October 24, 1997
    Date of Patent: April 4, 2000
    Assignee: Continental Pet Deutschland GmbH
    Inventor: Andreas Seul
  • Patent number: 5950858
    Abstract: An end closure for a container has a central panel, a circumferential countersink (18) formed around the center panel and adjacent the periphery of the end closure, and a fold (22) formed at the junction between the countersink and the center panel, the fold having opposite side walls which lie closely adjacent or in contact with each other and project upwards from the end closure. The fold may instead be formed at the base of the countersink. The fold forms an annular rigid zone in the end closure.
    Type: Grant
    Filed: October 2, 1995
    Date of Patent: September 14, 1999
    Inventor: David Robert Sergeant
  • Patent number: 5804237
    Abstract: A thin walled, easily crushable container with an integral or seamed-on bottom is filled with an edible material which requires sterilization. The empty container has one end attached or integral that may have a concave slope relative to the inside of the container. A liquified or solidified inert gas is then inserted into the container. The container is then sealed with a concave shaped end before the inert liquified or solidified gas has completely vaporized. The ends are such that they do not bulge under the pressure left after sterilization, which pressure is due to the pressurization effect of the inert gas and which pressure is enough to overcome the vacuum caused by the cooling of hot water vapor or steam above the edible material and gives the can the required rigidity.
    Type: Grant
    Filed: October 8, 1996
    Date of Patent: September 8, 1998
    Assignee: George B. Diamond
    Inventors: George B. Diamond, Ray G. Slocum
  • Patent number: 5785201
    Abstract: A molded lid having an intermediate region configured as a sequence of waves, each of curved cross-section forming successively occurring crests and troughs, and exhibiting amplitudes increasing in value from the lid center toward the rim. The waves terminate at a ring band which is located to slide in adjacency with the inwardly disposed side of a plastic drum. The lid is provided with a polymeric gasket which is retained in position by a retainer band which is insertable in sliding compressive engagement within a retainer cavity.
    Type: Grant
    Filed: May 2, 1996
    Date of Patent: July 28, 1998
    Assignee: Container Accessories, Inc.
    Inventors: Paul G. Bordner, Richard P. Brandt
  • Patent number: 5692638
    Abstract: The present invention includes a lid with a channel for use in sealing a pressurizable can, the lid having a channel for releasing gases generated within the can while substantially preventing the release of liquid from the can. The present invention also includes a method for venting gases from a can having a lid without degrading material stored in the can and substantially preventing the release of liquid from the can. The method includes making a channel in the lid, with the channel traversing the lid.
    Type: Grant
    Filed: June 10, 1996
    Date of Patent: December 2, 1997
    Assignee: The Pillsbury Company
    Inventor: Michael R. Perry
  • Patent number: 5685449
    Abstract: A lug lid (10) which closes an open head pail (12) has lugs (31) that overlap the annular rim (19) of the pail and which are crimped thereabout to attach the lid to the pail. An annular expansion bead (38) is formed in the lid to enable the lid to expand to relieve some of the increases in internal pressure which might occur in the container. Sacrificial depressions (46) are formed in the lid (10) adjacent the expansion bead (38) with each sacrificial depression radially aligned with a lid lug (31). The sacrificial depressions selectively weaken the lid to control the formation of wrinkles (47) in the lid in response to increased pressure within the materials container, with such wrinkles being formed in radial alignment with the lugs of the lid, where the connection between the lid (10) and the pail (12) is strongest.
    Type: Grant
    Filed: March 21, 1996
    Date of Patent: November 11, 1997
    Assignee: Brockway Standard, Inc.
    Inventor: James A. Oblak
  • Patent number: 5562230
    Abstract: The present invention includes a lid with a channel for use in sealing a pressurizable can, the lid having a channel for releasing gases generated within the can while substantially preventing the release of liquid from the can. The present invention also includes a method for venting gases from a can having a lid without degrading material stored in the can and substantially preventing the release of liquid from the can. The method includes making a channel in the lid, with the channel traversing the lid.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: October 8, 1996
    Assignee: The Pillsbury Company
    Inventor: Michael R. Perry
  • Patent number: 5476213
    Abstract: A container is provided which includes a tubular-shaped body member and a generally cup-shaped end member positioned within the body member and wherein the body member includes a generally inwardly-curled U-shaped cross-sectional configured end which receives an outwardly extending flange portion of the cup-shaped end member. The end member and the body member of the container include barrier liner layers wherein barrier liner layer of the tubular body member is positioned on the inside thereof and the barrier liner layer of the cup-shaped end member is positioned on the inside of the cup-shaped member so that these barrier liner layers are in face-to-face position on the inside of the cup-shaped end member. A bond is created between these face-to-face positioned barrier liner layers only to cooperate therewith to seal the one end of the container against leakage.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: December 19, 1995
    Assignee: Sonoco Products Company
    Inventor: William C. Suski
  • Patent number: 5421480
    Abstract: A thin-walled metal container is formed with a bottom wall having a substantially flat central panel connected to a curved wall portion through an annular, inclined flat or frustum wall portion. The curved wall portion joins the container side wall and is defined by the base radius. The inclined or frustum connecting wall portion acts as a hinge which enables the central panel to move between an upper, non-tensioned position and a lower, tensioned position. In the upper position, the annular downward facing surface of the curved wall located at the radially outermost periphery of the bottom wall defines a support surface which supports the container against necking, seaming, and filling column loads. After displacement of the central panel to the lower, tensioned position, which may occur after filling as a result of carbonation pressure, the container rests on a series of circumferentially spaced feet.
    Type: Grant
    Filed: April 8, 1993
    Date of Patent: June 6, 1995
    Assignee: Reynolds Metals Company
    Inventor: Daniel F. Cudzik
  • Patent number: 5230939
    Abstract: A product press formed from a paperboard and a method for forming the same is provided, wherein the product includes a press formed three-dimensional curvilinear region having a desired shape and containing a formation improvement structure for facilitating the press formation and maintenance of the desired product shape and for preventing the machine directionality of the paperboard from distorting the product from its desired shape. The press formed paperboard product of the preferred embodiment comprises a planar wall having a periphery which is at least partially curvilinear and a peripheral wall angularly oriented with respect to the planar wall. The peripheral wall extends along at least a portion of the curvilinear periphery of the planar wall and the closest portion of the peripheral wall is spaced a substantial radial distance from the periphery of the planar wall.
    Type: Grant
    Filed: September 4, 1990
    Date of Patent: July 27, 1993
    Assignee: James River Corporation of Virginia
    Inventor: Gary A. Baum
  • Patent number: 4957753
    Abstract: A technique is described by which a predetermined amount by weight of ground coffee can be packaged into a container while the coffee density may vary within a range. The amount of ground coffee is supplied into a container along a feed path to fill the container and form a column that extends above the upper rim of the container. The ground coffee is compressed to a predetermined head level by compressing a region around the feed path while leaving a small column of uncompressed coffee. In another embodiment, the volume of the container is expanded during compression by outwardly deforming a container end. This enables the stiffening of the ground coffee to support a smooth unbeaded outer wall after vacuum packing without paneling effects.
    Type: Grant
    Filed: December 12, 1988
    Date of Patent: September 18, 1990
    Assignee: Tetley, Inc.
    Inventors: Robert F. Bardsley, Eugene E. Corrigan