Forming Receptacle And Disparate Portion, E.g., Cup And Handle, Toilet Stool, Etc. Patents (Class 249/58)
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Patent number: 11937606Abstract: The invention relates to a device for producing a wafer cup, comprising a mold core and a die. The die has a base and a plurality of wall segments which are connected to the base in an articulated manner. A mechanism is provided for pivoting the wall segments from a first position, in which the base forms a support for receiving a wafer sheet that extends over the base (32), into a second position, in which the wall segments form a wall that surrounds the base and extends substantially perpendicularly from the base, thereby setting the wafer sheet sections extending over the region of the base against the mold core.Type: GrantFiled: November 23, 2020Date of Patent: March 26, 2024Assignee: WALTERWERK KIEL GMBH & CO. KGInventor: Dieter Kempass
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Patent number: 11472066Abstract: The technology described herein relates to a system of stackable/nesting stencils or molds for creating 3-D objects using a modeling compound material. The stencils or molds can be filled with the modeling compound material by hand and/or leveled using a roller to flatten the compound material more smoothly for a better outcome. Each stencil has a level and nests with another corresponding stencil of the set in a designated order. In some aspects, in order to guide a user with the correct designated order in which to fill the stencil plates or molds, each stencil plate or mold may be provided with a numbered tab. Once all the stencils are filled in the designated order with modeling compound materials, the stencil plates can be removed level by level to reveal a finished 3-D object. These 3-D objects may be anything from characters, vehicles, objects, figurines, and the like.Type: GrantFiled: June 18, 2019Date of Patent: October 18, 2022Assignee: Crayola LLCInventors: Joseph Thomas Moll, Erin O'Boyle Westgate, Robert J. Marino
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Patent number: 11358315Abstract: A mold apparatus for producing a molded article by injection molding includes (a) a base plate for mounting to a platen of an injection molding machine; and (b) a core plate movably coupled to the base plate and axially translatable relative to the base plate between a plate advanced position and a plate retracted position. A method of resetting the core plate includes energizing a mechanical actuator in a retraction direction to exert a retraction force against the core plate and axially translate the core plate relative to a base plate from the plate advanced (molded part ejection) position to a plate retracted (mold injection) position; and then, prior to applying clamping tonnage, relieving the retraction force to axially unload the mechanical actuator, wherein the actuator is isolated from axial force exerted across the mold during application of the clamping tonnage.Type: GrantFiled: April 24, 2020Date of Patent: June 14, 2022Assignee: Cap-Thin Molds Inc.Inventors: Cyrus Jebely, Vasko Dimitrov Vassilev
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Patent number: 10654205Abstract: A mold apparatus for producing a molded article by injection molding includes (a) a base plate for mounting to a platen of an injection molding machine; (b) a core plate movably coupled to the base plate and axially translatable relative to the base plate between a plate advanced position and a plate retracted position; (c) a lead screw rotatably supported by, and axially fixed relative to, the base plate; and (d) a lead nut coupled to the lead screw and rotationally fixed relative to the core plate. The lead nut is translatable in response to rotation of the lead screw between a first and a second abutment surface fixed relative to the core plate. The lead nut alternately bears against the first abutment surface for moving the core plate to the plate advanced position and the second abutment surface for moving the core plate to the plate retracted position.Type: GrantFiled: March 11, 2016Date of Patent: May 19, 2020Assignee: CAP-THIN MOLDS INC.Inventors: Cyrus Jebely, Vasko Dimitrov Vassilev
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Patent number: 10589973Abstract: An automated device for producing a closed part, commencing with an open part having a cap joined with a hinge to a body, the device comprising: a tool having a guide surface defined in an operating plane substantially orthogonal to a hinge axis; a part gripper disposed on a computer numerically controlled shuttle, the part gripper operable to: select an open part from a stream of identical open parts; engage one of: the cap; and the body, on a start point on the guide surface; slide the open part, within the operating plane from the start point to a finish point on the guide surface, to rotate the cap about the hinge axis from an open position to a closed position relative to the body; and release the closed part from the part gripper at a release station.Type: GrantFiled: October 9, 2014Date of Patent: March 17, 2020Assignee: ATS Automation Tooling Systems Inc.Inventors: Kenneth Wayne Nicholson, Philip David Munroe, Martin George Smith, Robert David Almas
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Patent number: 9227123Abstract: A lacrosse training device that has a frame and target material therein. The flexibility of the target material may be adjustable. The device is adapted to be suspended within a lacrosse goal. The device may have means for adjusting the tension of the target material. The target material may slip on over the frame like a sleeve. The device may have wheels, which may be located on a track. The device may have a motor that moves it to different sides of a goal. The device may move in response to a wireless controller.Type: GrantFiled: October 31, 2012Date of Patent: January 5, 2016Inventors: Patrick DeBolt, Robert DeBolt
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Patent number: 8430658Abstract: A frozen comestible maker suitable for home use includes single or multiple molding cavities for forming frozen comestibles, a heat exchanger for maximizing the heat transfer away from the fluid that is being frozen in the molding cavities, a refrigerant solution with a depressed freezing point in contact with the heat exchangers, a base container to seal the refrigerant solution from the fluid that is being frozen, and a bezel piece to retain spills and aid with handling. The refrigerant solution is captured between the molding cavities and the base container. One or more sticks, a drip cup, and an extraction tool may be provided with the frozen comestible maker for preparing and extracting shaped frozen comestibles, such as ice pops and popsicles, therefrom.Type: GrantFiled: January 16, 2009Date of Patent: April 30, 2013Assignee: Propeller, Inc.Inventors: Kenneth Daniel Zorovich, Yos Kumthampinu, John Chandler Earle, Jesse Pierce Delgigante
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Patent number: 8348223Abstract: A flexible mold for a smoking device having a cup-shaped outer wall, a cup-shaped inner wall, and a third cup-shaped wall. The outer wall has a continuous sidewall connected to a bottom wall containing a central opening. The sidewall of the outer wall extends from the bottom wall of the outer wall to an open end and contains an opening in the sidewall spaced between the bottom end and the open end. The inner wall has a continuous sidewall, a cover closing one end. The sidewall of the inner wall is attached to the bottom wall of the outer wall surrounding the central opening. The third wall has a continuous sidewall and a closed end. The sidewall of the third wall is connected to the sidewall of the outer wall surrounding the opening in the outer wall. The closed end abuts a surface of the inner wall.Type: GrantFiled: July 9, 2010Date of Patent: January 8, 2013Inventor: Douglas J. Evans
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Patent number: 8336847Abstract: Method and apparatus for injection co-molding and assembling of articles made of plastic material, the articles having a first part provided with a hinge pin, and a second part provided with an annular element designed to be connected to each other by hinging. The apparatus includes a mold having separate mold cavities for two parts of the article to be produced; a first molding member, defining the mold cavity of the pin, and a second molding member, defining the mold cavity of the annular element, are axially movable and operatively connected to cam control elements forming part of the same injection mold. The cam control elements are shaped and arranged to cause, after the opening of the mold, the automatic assembling of the plastic article, via a selective sequence of axial movements of the two molding members, during the demolding step of the molded article.Type: GrantFiled: November 2, 2006Date of Patent: December 25, 2012Assignee: ABATE BASILIO & C. S.n.c.Inventor: Davide Abate
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Patent number: 8272862Abstract: The article and corresponding method include a casting fixture for a part of a skin formulation applicator which is otherwise difficult to cast. The casting fixture includes a central cup section and two opposing tear-away sections. A rigid base portion of an applicator tip assembly is mounted into an upper rim of the cup section and liquid silicone material is poured into the volume defined in the cup section portion beneath the base portion. The silicone cures and bonds to extending elements from the base portion, providing a firm connection between the cast tip portion and the base portion. When the combined part is ready for use, the tear-away sections are removed by the user, which results in an easy ejection of the part, which can then be installed by the user in the formulation applicator.Type: GrantFiled: May 29, 2009Date of Patent: September 25, 2012Assignee: L'Oreal SAInventors: Kenneth A Pilcher, Richard A Reishus, Gregory W Herlin
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CONTAINER WALL FOR A CONTAINER COVERED BY A FOIL AND OUTER FORMWORK FOR PRODUCING THE CONTAINER WALL
Publication number: 20110289865Abstract: A container wall for storing and fermenting materials, comprising a clamping channel, having an undercut near the upper edge that is open for clampingly receiving a rim of at least one plastic foil that covers the container at the top, the clamping channel comprises a narrowed lateral insertion slot with an upper and a lower protrusion, to which the foil can be wrapped around. A lower wall of the clamping channel is wider than the thickness of the clamping rail at the facing longitudinal edge which is formed as a flat profile, the upper wall of the clamping channel is at least twice as wide as the thickness of the clamping rail. The insertion profile can be inserted into the clamping channel through the entry. When the foil that is wrapped around the insertion profile is under tension, the insertion profile is retained in the clamping channel by the protrusions.Type: ApplicationFiled: December 17, 2009Publication date: December 1, 2011Applicant: MT-ENERGIE GMBHInventors: Christoph Martens, Jan C.F. Behrens, Peter Maack -
Patent number: 8057207Abstract: An apparatus for preparing frozen comestibles including a container having an interior portion holding a refrigerant solution, and a mold insert attached to the container. The mold insert includes a base, molding cavities extending therefrom, and a heat exchanger in communication with the molding cavities. The mold insert is received within the container such that the molding cavities are housed within the interior portion of the container and the heat exchangers are submerged within the refrigerant solution. The molding cavities include exposed openings that receive fluids to be frozen. When the refrigerant solution is at a sufficiently cool temperature, the fluids freeze into a shaped frozen comestible.Type: GrantFiled: April 1, 2011Date of Patent: November 15, 2011Assignee: Propeller, Inc.Inventors: Kenneth Daniel Zorovich, Yos Kumthampinij, John Chandler Earle, Jesse Pierce Delgigante
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Publication number: 20110271708Abstract: The present invention is directed to a frozen beverage holder and method of making the same, the frozen beverage holder formed from a frozen block with one or more orifices formed in the frozen block adapted to receive a beverage container. The beverage holder may be formed entirely from a frozen liquid, semi-liquid, semi-solid, or gaseous material, and may also include height positioning devices or steps to position a beverage container inserted into the orifices at a desired height, a storage area and drainage channel formed into the frozen beverage holder; and a business card holder formed as a groove in the frozen beverage holder and configured so that a business card may be vertically inserted into the groove. The present invention is also directed at a mold for making the frozen beverage holder.Type: ApplicationFiled: August 26, 2010Publication date: November 10, 2011Inventors: Jeffrey Baker, Kevin Baker
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Patent number: 7905466Abstract: An ice tray is provided that prevents the overflow or splashing of water or thin ice out of the ice tray as water is supplied to the ice tray, or when the ice tray is shaken by an external force. The ice tray may include a plurality of receiving portions that receive water for freezing into ice pieces. An overflow preventing portion may extend upward from upper edges of the receiving portions to form a barrier to water flowing out of the ice tray. Alternatively, the receiving parts may be positioned within a corresponding plurality of location parts having water proofing walls extending upward therefrom to inhibit the unintentional flow of water or thin ice out of the receiving portions of the ice tray.Type: GrantFiled: June 19, 2008Date of Patent: March 15, 2011Assignee: LG Electronics Inc.Inventors: Tae Hee Lee, Hong Hee Park, Joon Hwan Oh, Young Jin Kim, Kwang Ha Suh
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Patent number: 7470387Abstract: The present invention provides a laterally movable lifting arm and follower which may be mounted adjacent a mold. The lifting arm is movable from a cap engaging position wherein it initially moves the cap away from the mold into the path of the follower. The cap is initially moved across the lid by lateral movement of the lifting arm. The follower is subsequently passed across the cap to lockingly engage the closure.Type: GrantFiled: April 21, 2006Date of Patent: December 30, 2008Assignee: StackTeck Systems LimitedInventor: Kevin Khai Hai Chiu
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Publication number: 20080314897Abstract: A flexible, silicone mold having a container and a peripheral rim that defines an opening to the container. Grasping zones are disposed along the rim and the grasping zones have sufficient dimensions to permit control of the geometry of the rim and also to permit control of the horizontal positions of the two grasping zones.Type: ApplicationFiled: August 29, 2008Publication date: December 25, 2008Inventor: Mathieu Lion
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Patent number: 6814248Abstract: A handgrip formed in a wall of a plastics container, the wall having an interior, an interior surface, an exterior surface and a wall thickness and suitable for containing a carbonated beverage, including an integral structure formed of a central dome having a convex surface facing toward the adjacent said exterior surface and at least two concentric annular troughs, each having an annular concave surface facing the adjacent said exterior surface, an outer frustum interconnected with each trough and connecting rings, each of curved cross-section having an annular concave surface facing toward the interior, to join, integrally, the frustums to the next outer trough and the outermost frustum to the container wall surrounding the handgrip, the handgrip having a thickness approximately equal to the wall thickness, wherein the handgrip does not extend radially outwardly of the wall. An associated container, blow mold and method are also included.Type: GrantFiled: August 8, 2002Date of Patent: November 9, 2004Assignee: DTL Technology Limited PartnershipInventors: Martin H. Beck, Dennis Connor
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Publication number: 20010046022Abstract: A tape carrier package with separate bonding parts that is capable of reducing a thermal expansion of the bonding parts. In the tape carrier package, a pad part is provided with a plurality of pads bonded to pads of a liquid crystal display panel and is divided into at least two parts.Type: ApplicationFiled: May 24, 2001Publication date: November 29, 2001Inventors: Sung Woong Moon, Sai Chang Yun
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Patent number: 6234782Abstract: An injection mould for making a bucket with a handle pivotally connected to the bucket by means of projections on the handle, said projections being in snap engagement with diametrally opposed openings in the bucket, said mould comprising a stationary mould half (20) and a movable mould half (21). The two mould halves (20,21) define a bucket mould cavity (27) corresponding to the shape of the bucket and handle mould cavity (29) corresponding to the shape of the handle and which in its entirety is radially external to the bucket mould cavity (27). The handle mould cavity (29) is externally defined by a movable mould member (34) in each of the portions corresponding to the projections. The mould member (34) is arranged on an arm (36) connected to an ejection plate (32). Further ejection pins (33) are connected to the ejection plate (32) for ejection of the handle.Type: GrantFiled: July 14, 1999Date of Patent: May 22, 2001Assignee: A.B.C. Hansen Vaerktojsfabrik A/SInventor: Albert B. C. Hansen
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Patent number: 5744082Abstract: The present inventions relates to a mold for forming a one piece flip-top cap and process for making such a cap. A mold for forming and closing the one piece flip-top cap prior to ejection from the mold includes a first mold part, an inner core mold part and a second mold part movable into relationship with the first mold part and the inner core mold so as to form a mold cavity therebetween. The mold produces a one piece flip-top cap with a living hinge between the body and lid of the cap and which is maintained in a closed position upon ejection from the mold. Pull straps are used to ensure full closure of the cap lid to the body prior to ejection.Type: GrantFiled: November 19, 1996Date of Patent: April 28, 1998Assignee: Marland Mold, Inc.Inventor: Kenneth Bak
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Patent number: 5656227Abstract: A method of molding a trigger sprayer one-piece housing includes molding the housing with a shroud having sides which extend rearward to an integral ergonomic saddle with a surface configured to rest upon the user's hand during trigger sprayer actuation. The one-piece housing is molded integrally with an outlet barrel, a pump cylinder, a vent passage cylinder, and a vertical inlet passage receptacle using the same three-piece mold.Type: GrantFiled: June 7, 1995Date of Patent: August 12, 1997Assignee: Contico International, Inc.Inventor: Donald D. Foster
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Patent number: 5536161Abstract: A mold for forming an article having one or more substantial radial protrusions. The mold includes a core movable along a molding axis, a stripper ring movable a limited distance along one set of guide rods with axes parallel to the molding axis, a split ring having segments movable adjacent to the stripper ring for the limited distance and movable relative to the stripper ring on a second set of guide rods at an angle to the molding axis, and a cavity. The article is removable from the mold when the core is moved away from the cavity, the stripper ring is moved its limited distance, and the split ring segments are moved with the stripper ring and then relative to the stripper ring at an angle to the molding axis.Type: GrantFiled: September 22, 1995Date of Patent: July 16, 1996Assignee: North America Packaging CorporationInventor: Arthur H. Smith
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Patent number: 5110278Abstract: Injection molding methods and apparatus for the production of casting molds for toric lenses having ballast oriented properly with respect to the cylinder axis of the toric surfaces. A calibrated rotatable ring mechanism is used within the injection molding body, for producing a slot or other alignment means on the lens casting mold at a point which is offset a predetermined number of degrees from the axis of the toric surfaces being formed in the casting mold. When the casting mold containing a newly cast lens is mounted on a precision lathe, the mating of the slot with a permanent ridge on the lathe spud ensures that the mold seats on the lathe at the same established place each time with respect to the position of the cutting tool. The offset between the toric axis and the position of the cutting tool has already been established, and therefore there is no need for the lathe operator to make any measurements or resetting of the cutting tool.Type: GrantFiled: November 30, 1990Date of Patent: May 5, 1992Assignee: Pilkington Visioncare, Inc.Inventors: John S. Tait, Izi Bruker
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Patent number: 4807844Abstract: A unitary mold for making ice sculpture includes: a mold made of elastomer material having an inner cavity concave downwardly for forming a model of an ice sculpture such as an animal, a building or a person or an article; a perforating bar or needle poking through the mold which can be warmed up to slightly melt the ice surrounding the bar or needle for its easy withdrawal from the ice product and forming a through hole of the ice sculpture for decorative, carrying, or water-drainage purposes; and an expansion-releasing element such as a flip-flop member formed as a part of the mold, serving as a buffer for the expansion of the water during its refrigeration process.Type: GrantFiled: March 24, 1988Date of Patent: February 28, 1989Inventor: Chen-Hua Tu
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Patent number: 4777004Abstract: Apparatus and method are described for injection molding of thermoplastic paint cans substantially similar in size and design to the conventional steel one-gallon paint can. The apparatus comprises a cavity element defining the exterior of the container body and a core mold element including a peripheral lip protruding into the interior of the can body at a point below the upper terminus of the top circumference of the container body, thus providing a peripheral upwardly projecting edge. The cavity element includes a plurality of cam elements which move cooperatively on separation of the core and cavity elements. The cam elements grip the ridge of the container and expand it outwardly sufficiently to permit the core element of the mold to be removed from the container without hindrance from the inwardly protruding lip.Type: GrantFiled: October 9, 1985Date of Patent: October 11, 1988Inventor: Herbert W. Galer
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Patent number: 4764103Abstract: An injection mold for molding a tubular article having a closed end comprises a stationary mold half including a cavity plate having at least one cavity impression and a movable mold half which is movable between a closed position and an open position and is provided with at least one core portion for defining a cavity together with the cavity impression when the movable mold half is moved to the closed position. A recess is formed in the top face of the core portion and a telescopic mold piece is fitted into the recess in such a manner that a narrow space is formed therebetween. An air chamber having a relatively large volume is formed in the vicinity of the top face of the core portion. The air chamber is communicated with the space over the top face of the core portion by way of the narrow space between the mold piece and the recess, and with the atmosphere by way of a communicating passage formed in the core portion.Type: GrantFiled: September 12, 1986Date of Patent: August 16, 1988Assignee: Fuji Photo Film Co., Ltd.Inventor: Hiroshi Mitake
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Patent number: 4713204Abstract: A process for fabricating one-piece moldings from a dry ceramic mass, in particular crockery or china such as cups, pots, cans and the like having deep handles, grips, lugs or the like as well as a molding arrangement for carrying out this process. The molding arrangement includes a divided mold matrix and a divided punch which define between them a mold cavity into which a sprayed granular dry ceramic mass is fed. By the application of isostatic pressure via the punch the ceramic mass is molded. The molding is then removed by separating the halves of the punch and mold matrix and the molding is then subjected to a kilning step.Type: GrantFiled: November 14, 1985Date of Patent: December 15, 1987Assignee: Laeis-Werke AGInventor: Rolf Jung
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Patent number: 4632357Abstract: A mold for making a bucket having a pivoted handle. The mold has cooperating mold parts defining cavities for molding a bucket and slotted bail retention means. The mold parts are movable only linearly to release the molded product.Type: GrantFiled: December 12, 1984Date of Patent: December 30, 1986Inventor: John W. Von Holdt
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Patent number: 4533311Abstract: A method and apparatus for the manufacture of deep, conical or cylindrical ceramic hollow bodies made of a powdered or granular pressed mass by isostatic compression, and with projections, such as handles, grips or the like provided on the hollow body being pressed simultaneously with the hollow body. To facilitate introduction of the pressing mass into the press chambers provided in the press mold for both the hollow body and the projection, the pressing mass, in addition to falling freely, is introduced into the respective press chambers under the influence of a vacuum.Type: GrantFiled: February 9, 1984Date of Patent: August 6, 1985Assignee: Laeis-Werke AGInventor: Wilhelm von Karchowski
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Patent number: 4476083Abstract: The following specification describes a stop boss formed on the handle of a pail by means of a pair of slides located behind a skirt wall of the pail with the handle passing through a slot in the skirt wall, which is closed by a flange wall formed by the slides. The slides are movably carried in guides by a ring member and are received in a recess of another ring member which conventionally forms the annular pail wall. The guides enable the slides to move laterally toward each other in response to downward movement of the carrying ring member, to define the cavities for forming the stop boss and the flange wall closing the skirt wall slot. On completion of the mold cycle and upward movement of the ring member carrying the slides, the guides move the slides laterally apart to release the stop boss and the flange wall. The slides are then moved from between the skirt and pail walls to enable the pail to be released from the mold.Type: GrantFiled: February 16, 1978Date of Patent: October 9, 1984Inventor: John W. von Holdt
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Patent number: 4383819Abstract: A bucket shaped container having a rim opening smaller than the diameter of the sidewall thereof is injection molded from thermoplastic material using a die set including a molding core which collapses to allow axial removal of the molded container from the mold. The molding core comprises a plurality of individual, wedge shaped outer core sections which collectively form a continuous molding surface and are slidably mounted on a tapered inner core to allow axial sliding movement of the outer core sections relative to the inner core. Each of the outer core sections is also mounted for radial sliding movement on a mounting plate which circumscribes the molding core and is mounted for reciprocating axial movement relative to the inner core. Reciprocation of the mounting plate produces simultaneous axial and radial movement of the outer core sections throughout their entire lengths between an expanded molding position and a collapsed container releasing position.Type: GrantFiled: February 12, 1982Date of Patent: May 17, 1983Assignee: Letica CorporationInventor: Ilija Letica
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Patent number: 4351630Abstract: A device for exercising a living hinge of an article and/or closing a lid of a cap while the article or cap is in a mold for forming the article or cap. The device includes a finger which slides between the mold sections, and, in the process, engages a portion of the article or the lid, rotates the portion or lid about the hinge, and in the case of the cap, snaps the lid shut. In an alternate preferred embodiment, when the finger reaches predetermined point it pivots toward the female mold section to snap the lid tightly shut.Type: GrantFiled: December 31, 1980Date of Patent: September 28, 1982Assignee: Global Precision Inc.Inventors: Robert S. Hayberg, Eugene L. Foltuz
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Patent number: 4349174Abstract: A container (1) is provided with a cover (2) which has a guarantee strip (4) which can be divided along a design tearing line. In this arrangement, the guarantee strip (4) engages under a holding bead (9) and at the same time is protected from unauthorized manipulation of the guarantee strip, by a protective bead (10). So that the container which is produced by an injection molding process can be produced by means of axially openable molding tools, the holding bead and the protective bead are interrupted in such a way, and are arranged offset relative to each other in gaps, in such a way, that the respective holding bead (9) only extends, on the outside wall of the container, over the length over which the protective bead (10) is interrupted. In this way there is no undercut configuration at any point, which would prevent axial retraction of the molding tools or axial ejection of the container.Type: GrantFiled: November 13, 1980Date of Patent: September 14, 1982Assignee: Albert Obrist AGInventors: Albert Obrist, Hans-Werner Breuer
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Patent number: 4340352Abstract: A device for exercising a living hinge of an article and/or closing a lid of a cap while the article or cap is in a mold for forming the article or cap. The device includes a finger which slides between the mold sections, and, in the process, engages a portion of the article or the lid, rotates the portion or lid about the hinge, and in the case of the cap, snaps the lid shut. In an alternate preferred embodiment, when the finger reaches a predetermined point it pivots toward the female mold section to snap the lid tightly shut.Type: GrantFiled: December 31, 1980Date of Patent: July 20, 1982Assignee: Global Precision Inc.Inventor: Robert S. Hayberg
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Patent number: 4316864Abstract: Method for slip casting toilet bowls and as mould for casting ceramic material in slip form, including a compartment having an air impermeable wall and arranged, in the casting position of the mould, so that when the mould is filled with slip air is trapped in the compartment. The compartment is located at a region where casting is not to occur and the trapped air not only achieves this but also prevents the surface of the compartment from becoming wetted, thereby making subsequent cleaning easier. The compartment may be formed either in a plaster mould part and its surface rendered air impermeable, or in a separate part made of air impermeable material, and assembled with the plaster mould parts. The mould is particularly suitable for casting a water-closet bowl, the compartment being located at the region where the open top of the bowl is formed.Type: GrantFiled: August 25, 1980Date of Patent: February 23, 1982Assignee: American Standard Inc.Inventor: John S. Bramwell
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Patent number: 4296908Abstract: A mold having an integral piece for casting a hygienic-sanitary appliance is disclosed. The mold includes a lower mold piece, at least two lateral mold pieces which are mounted on the lower mold piece to define a molding cavity for an article to be cast. An upper mold piece is mounted in position on the lateral mold pieces to close the mold cavity; the lateral and upper mold pieces being separable from the lower mold piece and the cast article to leave the latter resting on the lower mold piece. Below the cavity of the mold there is provided an annular or partially annular shaped base to support the cast article.Type: GrantFiled: July 28, 1980Date of Patent: October 27, 1981Assignee: American Standard Inc.Inventor: Giuseppe Lippa
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Patent number: 4286766Abstract: A collapsible mold core comprises an inner core member defining opposed first and second ends. The inner core member tapers transversely to a reduced diameter from the first to the second end. A plurality of outer core members are attached to the lateral exterior of the inner core member in longitudinally slidable relation to it between first and second sliding positions. The outer core members define first and second ends corresponding in position to the first and second ends of the inner core member, with the outer core members tapering inwardly in transverse dimension from their second to their first ends to provide an opposite taper to that of the inner core member. The mold core is of lesser transverse diameter in the second sliding position than in the first sliding position. This permits the molding of an object such as a straight-walled bucket having an inwardly-projecting lip about the mold core while it occupies the first sliding position.Type: GrantFiled: April 18, 1980Date of Patent: September 1, 1981Inventor: John W. von Holdt
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Patent number: 4268001Abstract: A mold for casting ceramic material in slip form is disclosed. The mold comprises a plurality of mold parts of which one constitutes a seat made of a non-casting material, the other mold part or parts being made of casting plaster, a surface region of the seat, in the assembled mold, forming part of the casting cavity, which surface region is bounded by closely adjacent region of the other mold part or parts such that during casting a solid cast portion of the article is cast against the seat, the mold parts being adapted so that the mold can be opened after casting to leave the article on the seat whereby the article can be lifted away on the seat.Type: GrantFiled: June 6, 1980Date of Patent: May 19, 1981Assignee: American Standard Inc.Inventor: Giuseppe Lippa
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Patent number: 4199129Abstract: A blow mold for producing bottles or similar hollow containers from parisons of synthetic plastic material comprises two mirror-symmetrically arranged blow mold halves movable toward and away from each other between a closed and an open position. Each of the mold halves includes an outer mold part and an inner mold part guided for independent movement relative to the outer mold part in an endless inner face of the latter, the inner mold part having a concave end face which forms together with an adjacent portion of said inner face of the corresponding outer mold part in the closed position of the mold half of the mold cavity for forming a bottle. Each of the concave end faces of the inner mold part may also be provided with an island-shaped sharp edged projection aligned with and engaging in the closed position of the mold a corresponding projection on the inner mold part of the other mold half for forming a grip opening in the bottle.Type: GrantFiled: May 3, 1978Date of Patent: April 22, 1980Inventor: Rainer Fischer
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Patent number: 4172577Abstract: A stop boss formed on the handle of a pail may be simultaneously molded along with the pail and its handle by means of a pair of pivotable members which have free ends abutting together in a first pivoting position, and which are spaced from each other in a second pivoting position. The free ends cooperatively define between them a mold cavity for forming the stop boss on the rotatable handle. The pivotable members are adapted to occupy their first pivoting position while the mold assemblies close, and to pivot into the second, open pivoting position upon opening of the mold assembly and removal of the molded part to facilitate removal of the stop boss.Type: GrantFiled: August 21, 1978Date of Patent: October 30, 1979Inventor: John W. VON Holdt
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Patent number: 4125246Abstract: The following specification describes a paint can mold in which a pair of concentric ring members and cores at diametrically opposed positions create concentric mold cavities for forming projecting bushings on the pail, each having a concentric handle bearing. The plastic for forming each bearing and a handle interconnecting the bearings passes through a gate in each ring member. Withdrawal of the ring member severs the plastic in the gate from between the bushing and bearing so that the handle is free to rotate on the bushings. Means are provided to prevent disassembly of the handle from the can.Type: GrantFiled: June 13, 1977Date of Patent: November 14, 1978Inventor: John W. VON Holdt
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Patent number: 4114849Abstract: The following specification describes a stop boss formed on the handle of a pair by means of a pair of slides located behind a skirt wall of the pail with the handle passing through a slot in the skirt wall, which is closed by a flange wall formed by the slides. The slides are movably carried in guides by a ring member and are received in a recess of another ring member which conventionally forms the annular pail wall. The guides enable the slides to move laterally toward each other in response to downward movement of the carrying ring member, to define the cavities for forming the stop boss and the flange wall closing the skirt wall slot. On completion of the mold cycle and upward movement of the ring member carrying the slides, the guides move the slides laterally apart to release the stop boss and the flange wall. The slides are then moved from between the skirt and pail walls to enable the pail to be released from the mold.Type: GrantFiled: March 28, 1977Date of Patent: September 19, 1978Inventor: John W. von Holdt
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Patent number: 4059249Abstract: A core for the injection molding of plastic articles having internal threads, provides a means for readily releasing the article from the mold. The core has a non-rotating, water-cooled center section to hold the molded article against rotary motion and a driven, water-cooled ring section for molding threads in the article. Rotation of the ring section coupled with the holding action of the stationary center section releases the molded thread and ejects the article from the core by the axial force of the thread of the core bearing against the molded thread of the article.Type: GrantFiled: December 30, 1976Date of Patent: November 22, 1977Assignee: United States Steel CorporationInventor: Herbert W. Galer