Separate Stage Covering Of Different Preform Areas Patents (Class 264/254)
  • Patent number: 6375884
    Abstract: A method of producing a bead inductor includes the steps of forming an outer portion outside of a conductor coil, and forming a molded body with the conductor coil embedded therein. The outer portion is formed outside of the conductor coil by disposing the conductor coil in a cavity defined by first and second mold portions, with first and second gates formed in the first mold portion, inserting first and second spacer pin portions, which define a spacer pin which passes through the conductor coil and extends to and closes the second gate, and supplying material containing magnetic powder into the mold cavity from the first gate. The molded body is formed by closing the first gate after the formation of the outer portion, and supplying from the second gate material containing magnetic powder into a space formed by removing the spacer pin portions.
    Type: Grant
    Filed: September 2, 1999
    Date of Patent: April 23, 2002
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Takashi Shikama, Masami Sugitani, Hisato Oshima, Junichi Inoue
  • Patent number: 6361727
    Abstract: Brassiere underwires are made in a three step process in which, initially, pairs of injection molded polyamide tips are formed on a continuous flexible strand of carbon fiber or aramid fiber material which can be baked to impart stiffness thereto. In a second step, the strand is cut between the tips to form lengths having the tips at extremities thereof. The lengths are then shaped in a half barrel or plate mold and baked to harden the materials.
    Type: Grant
    Filed: February 24, 2000
    Date of Patent: March 26, 2002
    Inventor: Gerhard Fildan
  • Publication number: 20020027098
    Abstract: Method and apparatus for manufacturing a synthetic resin-made hollow member incorporating an intermediate element are provided which enable operations of molding half bodies, abutting and joining the half bodies together, and molding an intermediate element in a series of steps, and which eliminate the necessity of such a manual work as may otherwise be required in incorporating the intermediate element into the half bodies. A pair of rotary injection molding dies are used which can be opened and closed relative to each other and are rotatable relative to each other over an angle of 60° for each turn, each die having a half body molding section including one male molding portion and two female molding portions in the direction of rotation for each rotational run over an angle of 120°, each die also having an intermediate element molding portion provided between specified half body molding portions in the direction of each rotational run over an angle of 120°.
    Type: Application
    Filed: August 10, 2001
    Publication date: March 7, 2002
    Inventors: Yoshihiro Takemoto, Shoso Nishida
  • Publication number: 20020028649
    Abstract: In an air passage switching door, a packing material having a size approximately corresponding to a plate surface of a door base member is used, and the door base member is crossed with the packing material at a portion around a rotation shaft for rotating the door base member, so that both plate portions of the door base member are bonded to opposite surfaces of the packing material at different areas of the packing material. Accordingly, the air passage switching door can be manufactured using the single packing material in low cost, while having a reduced thickness.
    Type: Application
    Filed: April 16, 2001
    Publication date: March 7, 2002
    Inventors: Mitsutoshi Kato, Yasuhiro Sato, Yutaka Ichitani, Kunio Nakashima, Hiroyuki Saito
  • Publication number: 20020027099
    Abstract: Method and apparatus for manufacturing a synthetic resin-made hollow member incorporating an intermediate element are provided which enable operations of molding half bodies, abutting and joining the half bodies together, and molding an intermediate element in a series of steps, and which eliminate the necessity of such a manual work as may otherwise be required in incorporating the intermediate element into the half bodies. A pair of rotary injection molding dies are used which can be opened and closed relative to each other and are rotatable relative to each other over an angle of 60° for each turn, each die having a half body molding section including one male molding portion and two female molding portions in the direction of rotation for each rotational run over an angle of 120°, each die also having an intermediate element molding portion provided between specified half body molding portions in the direction of each rotational run over an angle of 120°.
    Type: Application
    Filed: August 10, 2001
    Publication date: March 7, 2002
    Inventors: Yoshihiro Takemoto, Shoso Nishida
  • Patent number: 6338812
    Abstract: A helical antenna having an antenna element covered with an insulating layer is formed by monolithically form the insulating layer so that the antenna element is integrated with the insulating layer. To be more precise, first, a cylindrical shell, which received a core pin in its center hole, is inserted into the antenna element along the longitudinal axis of the antenna element. The antenna element is put in a cavity of a molding die. A moulding resin which was heated and molten at a temperature higher than the melting point of the cylindrical shell is injected into the cavity to form an insulating cover over the cylindrical shell and the antenna element. The surface of the cylindrical shell starts softening upon contacting with the molten resin, and sticks around the helically coiled antenna line, whereby the pitch of the antenna element can be maintained substantially constant even if an injection pressure is applied during the molding.
    Type: Grant
    Filed: June 18, 1999
    Date of Patent: January 15, 2002
    Assignee: SMK Corporation
    Inventor: Keiichi Ogura
  • Publication number: 20020003321
    Abstract: A method of compression moulding an article from rubber moulding material incorporating hollow inserts avoids damage to the inserts. Where compression moulding takes place in an enclosed mould at an elevated pressure, the pressure can distort and damage the hollow inserts especially if they are of plastics. In order to avoid such distortion and damage, the method compresses during moulding creating a pressure in a cavity of the insert which substantially balances the pressure exerted on the exterior of the insert by the rubber moulding material in the mould. The pressure in the cavity is preferably produced by introducing some rubber moulding material into the cavity of the insert. This material becomes pressurized during moulding and supports the interior of the insert.
    Type: Application
    Filed: April 30, 2001
    Publication date: January 10, 2002
    Inventor: Paul Andrew Kelly
  • Publication number: 20010054780
    Abstract: A helical antenna having an antenna element covered with an insulating layer is formed by monolithically form the insulating layer so that the antenna element is integrated with the insulating layer. To be more precise, first, a cylindrical shell, which received a core pin in its center hole, is inserted into the antenna element along the longitudinal axis of the antenna element. The antenna element is put in a cavity of a molding die. A molding resin which was heated and molten at a temperature higher than the melting point of the cylindrical shell is injected into the cavity to form an insulating cover over the cylindrical shell and the antenna element. The surface of the cylindrical shell starts softening upon contacting with the molten resin, and sticks around the helically coiled antenna line, whereby the pitch of the antenna element can be maintained substantially constant even if an injection pressure is applied during the molding.
    Type: Application
    Filed: June 18, 1999
    Publication date: December 27, 2001
    Inventor: KEIICHI OGURA
  • Patent number: 6321434
    Abstract: A method for manufacturing sealing tool comprising a socket (3) and a head (4) at one end and the other end of a linear element (2) respectively and a protrusion (11) for locking the head (4) in a head-insertion hole (10) of the socket (3), which comprises the steps in the mentioned sequence of fixing a core ball (13) and either the socket (3) or the head (4) to the linear element (2), cutting the linear element (2) at a point close to the core ball (13), pulling the linear element (2) to bring the core ball (13) to be set in a cavity (27) and filing a synthetic resin in the cavity (27) in a manner such that the core ball (13) and the socket (3) engageable with the head (4) are integrally formed.
    Type: Grant
    Filed: March 16, 2000
    Date of Patent: November 27, 2001
    Assignee: Toska Co., Ltd.
    Inventor: Mikio Kubota
  • Publication number: 20010042935
    Abstract: A method for forming a headliner assembly includes forming a main body having a periphery, and a shape corresponding to a desired shape of the headliner assembly; positioning the main body in a mold having a recess; closing the mold; and injecting foam into the recess to simultaneously form an energy absorbing member and join the energy absorbing member to the main body proximate the periphery of the main body.
    Type: Application
    Filed: March 25, 1999
    Publication date: November 22, 2001
    Inventors: SCOTT A. BARBER, JOHN C. WALTERS, BRIAN H. SCHOLFIELD
  • Patent number: 6312633
    Abstract: A method of producing dashboards, door or side trim panels for motor vehicles with a predetermined breaking line for an airbag flap is described. To accomplish this, slush material is introduced into a mold which can be heated to a molding temperature and determines the shape of the slush membrane, where the slush material is distributed and deposited on the heated mold surface by rotating the mold and is then sintered and gelled. After cooling the mold, the slush membrane is removed from the mold by unmolding. To create a predetermined breaking line, a mold having a divider on its mold surface at the location of the predetermined breaking line to be created is used. By controlled rotation and/or positioning of the mold while applying the powder and/or gelling the slush material, a reduction in the layer thickness of the slush material to an extent that establishes a predetermined breaking line is achieved.
    Type: Grant
    Filed: July 22, 1998
    Date of Patent: November 6, 2001
    Assignee: Benecke Kaliko AG
    Inventors: Gerd Henning Kiesel, Walter André
  • Patent number: 6299820
    Abstract: A pressure vessel includes a polyolefin extruded tube, a polyolefin flange overmolded onto the tube, and a cap engaged to the flange. In the overmolding process, a polyolefin material is overmolded unto a polyolefin substrate.
    Type: Grant
    Filed: February 16, 1999
    Date of Patent: October 9, 2001
    Assignee: Celgard Inc.
    Inventor: Martin J. Weinstein
  • Patent number: 6287501
    Abstract: A process is disclosed for overmolding crosslinked tubing ends onto a crosslinkable tube. The tube, made of a first polymer, has an inner diameter. The tube is inserted at least partially into a mold and at least partially onto a cylindrical mandrel having a base and a tip. The mandrel has an outer diameter dimensioned to allow the inner diameter of the tube to slide thereon. The mold contains a void for injection of a second polymer. The void co-acts with the mandrel and the tube to define an overmolding shape. After injection molding the second polymer over the tube and the mandrel in the void of the mold, the first and second polymers are crosslinked. Different embodiments of the overmolding shape are taught.
    Type: Grant
    Filed: April 16, 1999
    Date of Patent: September 11, 2001
    Inventor: William W. Rowley
  • Patent number: 6287406
    Abstract: Methods for preparing a panel unit having a panel and a frame in which a first molding piece is formed by engaging an extrusion port of an extrusion molding die with a peripheral edge of the panel and extruding an extruded molding material along the peripheral edge of the panel. The extruded molding material preferably simultaneously bonds to the peripheral edge. Waste pieces may be eliminated from the first molding piece after bonding the first molding piece to the peripheral edge and the frame may be completed by adding an additional molding piece to provide a continuously formed frame around the peripheral edge. The first molding piece may be formed by continuously moving the peripheral edge relative to the extrusion port in a predetermined orbital path. The peripheral edge of the panel may be subjected to a primer treatment before engaging the extrusion port.
    Type: Grant
    Filed: January 14, 1999
    Date of Patent: September 11, 2001
    Assignee: Tokai Kogyo Kabushiki Kaisha
    Inventors: Toshikazu Ito, Yoshihiro Suita
  • Patent number: 6284180
    Abstract: A method of curing large endless track rubber belts uses a multi-platen mold assembly with a pair of fully supporting indexing wheels, non-preformed lug preparation and a post-forming cavity pressure reduction to provide cured tracks with non-deformed reinforcing members while avoiding the extrusion of rubber compound out of the ends of the molds. Also provided is an apparatus for curing large endless track belts having fully supported indexing wheels.
    Type: Grant
    Filed: November 4, 1999
    Date of Patent: September 4, 2001
    Assignee: The Goodyear Tire & Rubber Company
    Inventor: Thomas Brian Feldmann
  • Patent number: 6284179
    Abstract: A neck flange supports a tracheostomy tube inserted into the neck and has a neck engaging portion of a molded thin flexible flat sheet of a transparent polymer. An interconnection positioned centrally within the neck engaging portion and carried thereby has a ring shaped body with an opening and a pair of opposed pivot pins extending inwardly into the opening for carrying the tube passing therethrough. The pair of opposed pins fit for movement within recesses in the tube to permit limited swivel motion. The interconnection is molded of a transparent polymer material that is less flexible than the neck engaging portion and has a stepped cross section so the pair of opposed pivot pins are raised relative to the ring shaped body. The neck engaging portion is molded about the interconnection so the raised pair of opposed pins remain exposed.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: September 4, 2001
    Assignee: Mallinckrodt Medical Inc.
    Inventors: Michael Deily, Norman Crandall
  • Publication number: 20010013671
    Abstract: Method for decorating the top of a compression-molded cap of synthetic material intended to close a container, in which the decoration is positioned on a flat support in the form of a disc which is placed in the cavity of the cap forming mold before the constituent material of the cap is introduced, and is found to be bonded to the top of the cap after its removal from the mold.
    Type: Application
    Filed: December 26, 2000
    Publication date: August 16, 2001
    Inventor: Fiorenzo Parrinello
  • Patent number: 6274070
    Abstract: Provided are a conductive resin composition having little negative impact on the environment, a resin molding which includes conductive parts of the conductive resin composition and insulating parts, and their methods of production. The production costs for the resin molding are low. The conductive resin composition is formed by kneading a thermoplastic or thermosetting resin with a low melting point alloy, wherein the low melting point alloy is moldable with the resin and consists essentially of tin and is free of lead. An insulating body is formed through primary molding of a thermoplastic or thermosetting resin, and is integrated with conductive parts of the conductive resin composition through secondary molding; or alternatively, conductive parts are formed through primary molding of the conductive resin composition and an insulating body is formed while being integrated with the conductive parts through secondary molding.
    Type: Grant
    Filed: June 8, 2000
    Date of Patent: August 14, 2001
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Tsuyoshi Tanigaki, Shogo Izawa, Akikazu Matsumoto, Tadahiko Kohama
  • Patent number: 6274073
    Abstract: A process for producing a pipe fitting of thermally weldable material for attachment to or repair of conduits of thermally weldable material. The first injection mold has channels formed as windings and having channel walls. A heating wire is formed to a wavy heating strand which is laid into the first injection mold between the channel walls. A first welding material is introduced into the channels so that a first broad side of the wavy shape of the heating strand is pressed against a first mold surface of the injection mold and an intermediate product with embedded wavy heating strand is formed. The outside surface is formed by the first mold surface against which the heating strand is pressed and provides the contact surface with the conduit in the end product. The first broad side of the wavy shape of the heating strand remains visible at the outer surface of the intermediate product.
    Type: Grant
    Filed: December 7, 1998
    Date of Patent: August 14, 2001
    Assignee: Manibs Spezialarmaturen GmbH & Co. KG
    Inventor: Jürgen Schafstein
  • Patent number: 6264862
    Abstract: An apparatus for manufacturing a plug and the manufacturing method. The method includes the following steps. A baseplate located in the bottom of a closed printing chamber is provided. A printed circuit board and a stencil are mounted on the baseplate in sequence. The stencil is aligned to the printed circuit board. An amount of preheated paste is placed on the stencil. A pressure of the closed printing chamber is adjusted to a first pressure. A printing step is performed to form plugs in the printed circuit board. The pressure of the closed printing chamber is adjusted to a second pressure to remove voids trapped in the plugs. The pressure of the closed printing chamber is adjusted to a third pressure. A scraping step is performed to remove the redundant paste.
    Type: Grant
    Filed: February 8, 1999
    Date of Patent: July 24, 2001
    Assignee: World Wiser Electronics Inc.
    Inventor: Been-Yu Liaw
  • Publication number: 20010008320
    Abstract: A method for molding a layer around a body. The method includes injection molding uncured layer material around a first portion of the body to surround the first portion while leaving a second portion of the body free from layer material. Additional layer material is injection molded around the second portion of the body to contact the layer material around the first portion. The layer material is then compression molded around the body and cured.
    Type: Application
    Filed: December 18, 1998
    Publication date: July 19, 2001
    Inventor: STEPHEN K. SCOLAMIERO
  • Publication number: 20010007377
    Abstract: The object of the invention is to provide a method for molding a resin-molded article having an excellent surface appearance without any resin-intrusion part on the front surface of a skin thereof. In the invention, the skin is placed on a part of a inner wall of a mold and then injecting a synthetic resin into a cavity of the mold to effect an integral molding of a resin-molded article having the skin on a part thereof, wherein a mold having a first gate on a first inner wall part located on the part other than the back surface of the skin placed on the inner wall of said mold and a second gate on a second inner wall part which faces the back surface of the skin placed on the inner wall is employed; and wherein the synthetic resin is first injected from said first gate until the tip portion of the synthetic resin comes close to the edge of said skin, and then the synthetic resin is injected from the second gate.
    Type: Application
    Filed: December 18, 1998
    Publication date: July 12, 2001
    Inventors: ATSUSHI GOTO, AKIO NAKANO, TATSUO YAMADA, KENICHI FURUTA, MINORU TODA, TETSUYA FUJII
  • Patent number: 6258312
    Abstract: A closure for a container, and a method for producing the same, wherein the closure includes an end panel and a plastic frame member connected together and which can be place over, or snapped onto, and then the frame member can be permanently attached and hermetically sealed to the flange of a metal, glass, plastic or composite container or can. The interface of the end panel and frame member is such as to hermetically, seal the container and yet the end panel can be readily peeled from at least a portion of the frame member for gaining access to the interior of the container. A pull tab, or ring, is provided to assist in peeling the end panel to an open position. Depending on the manner of attaching or securing the end panel to the frame member, separation or peeling can result from an adhesive failing or from a cohesive failing of the material forming the frame member, or the end panel, or the adhesive.
    Type: Grant
    Filed: September 16, 1994
    Date of Patent: July 10, 2001
    Assignee: Polystar Packaging, Incorporated
    Inventor: William M. Heyn
  • Patent number: 6251323
    Abstract: The invention utilizes the adhesive properties which plastic material exhibits while still hot combined with a multi stage molding operation wherein one side of an insert or core located in one side of a mold is coated with molten plastic on a first closing of the mold, the mold is then opened with the plastic still hot to remove the insert or core from the one mold side by virtue of its adherence by the hot plastic to the other mold side, a second charge of plastic is then introduced into the said one mold side and the mold is closed again with the plastic in a molten state to complete the encapsulation of the insert or core.
    Type: Grant
    Filed: August 6, 1999
    Date of Patent: June 26, 2001
    Assignee: Royal Eco Products Limited
    Inventors: Herbert K. Hoedl, Eufredo Maury, Dave Cockle
  • Patent number: 6248279
    Abstract: A method and apparatus for encapsulating a ring-shaped member, such as a wound coil of wire, a wound metal ribbon, or a metal composite material. The ring-shaped member is mounted upon a mandrel. The mandrel and the mounted ring-shaped member are positioned in a first mold. A thermoplastic material is injection molded peripherally about a first inner void between the mandrel and the ring-shaped member and a first outer void between the first mold and the ring-shaped member. The mandrel is moved with respect to the ring-shaped member. The mandrel and the re-mounted ring-shaped member are positioned in a second mold. The thermoplastic material is injection molded into a second inner void between the mandrel and the ring-shaped member and within a second outer void between the second mold and the ring-shaped member. The second fill of the thermoplastic material joins with the first fill to fully encapsulate the ring-shaped member.
    Type: Grant
    Filed: May 25, 1999
    Date of Patent: June 19, 2001
    Assignee: PANZER Tool Works, Inc.
    Inventor: Edward Brian Walsh
  • Patent number: 6228306
    Abstract: A driving tool, such as a screwdriver, has a handle with an injection-molded, relatively hard and rigid inner body, molded around a tool shank, the inner body having an elongated central portion with two end flanges extending laterally outwardly of the central portion around the entire periphery thereof, with the central portion having a peripheral groove formed therein adjacent to an end flange. An outer gripping body of a relatively soft and resilient material is injection molded around the inner body, surrounding said central portion of said inner body and filling said groove.
    Type: Grant
    Filed: August 9, 1999
    Date of Patent: May 8, 2001
    Assignee: Snap-on Technologies, Inc.
    Inventors: Joseph R. Hoepfl, Christopher D. Thompson
  • Patent number: 6200508
    Abstract: Printing techniques are used to build three dimensional structures by depositing successive layers of the device onto a substrate. The layers and/or portions thereof are different materials, e.g., conductors and insulators, which provide the desired functional characteristics of the device. The substrate may be used only to provide a support for the printing process, in which case it will usually be removed after the device is fabricated, or may instead be a functioning part of the fabricated device.
    Type: Grant
    Filed: October 27, 1997
    Date of Patent: March 13, 2001
    Assignee: Massachusetts Institute of Technology
    Inventors: Joseph M. Jacobson, Jonathan Albert, Neil Gershenfeld
  • Patent number: 6196937
    Abstract: A thread-wound golf ball comprising a large, heavy center with rubber thread windings and a cover is disclosed. The center has a diameter of about between 1.40″ and 1.53″, a weight of about between 24-34 g and a deformation of about between 0.080-0.160″ when subjected to a 200 lb. load. The cover is a thermosetting or thermoplastic material with a hardness range between 40-70 Shore D. A golf ball according to the invention exhibits the combined superior characteristics of two-piece and three-piece golf balls, i.e., ease of manufacture, feel, playability, durability and distance travel.
    Type: Grant
    Filed: January 27, 1999
    Date of Patent: March 6, 2001
    Inventor: Sanjay M. Kuttappa
  • Patent number: 6187130
    Abstract: A method of forming a tip on a catheter having a elongate shaft. The method includes the step of positioning a first tubular member so that it is overlying the distal portion of the elongate shaft. The method further including the step of positioning a second tubular member so that a proximal end of the second tubular member is proximate a distal end of the first tubular member. The method further includes the step of positioning a third tubular member so that it overlays both the first tubular member and the second tubular member. At least the distal portion of the elongate shaft is then heated, wherein the first tubular member, the second tubular member, and the third tubular member are fused to form a catheter tip affixed to the distal portion of the elongate shaft.
    Type: Grant
    Filed: May 26, 1999
    Date of Patent: February 13, 2001
    Assignee: SciMed Life Systems, Inc.
    Inventors: John Berard, Jeff Voy Scheinost, Thomas Mark Benson, Diana Moore
  • Patent number: 6183681
    Abstract: A multi-stage method of insert molding is described including the steps of: providing a vertically movable first mold member with a cavity formed therein; providing a second mold member having a substantially flat upper molding surface; providing a third mold member having an upper end with a cavity formed therein; positioning an insert directly on the flat upper molding surface of the second mold member; positioning the first mold member with respect to the second mold member so that the cavity of the first mold member receives the insert; injecting a first flowable plastic material into the cavity in the first mold member to partially encapsulate the insert; allowing the first flowable plastic material to cool and solidify, thereby creating a first stage molding; removing the first mold member and the second stage molding from the second mold member; positioning the first mold member with respect to the third mold member so that the first stage molding registers with the cavity of the third mold member; inj
    Type: Grant
    Filed: December 7, 1998
    Date of Patent: February 6, 2001
    Assignee: Centurion International, Inc.
    Inventors: Jonathan L. Sullivan, Douglas McKeown
  • Patent number: 6171534
    Abstract: A method of making a loudspeaker cone and surround assembly comprises clamping at least the outer marginal edge of a cone in a mold having a cavity defining a surround and injecting an elastomeric material into the cavity through an annular orifice extending substantially continuously around the said marginal outer edge to form a surround attached to the outer marginal edge of the cone. The method includes the step of feeding the elastomeric material to the annular orifice through an annular feed chamber extending around the mold cavity. The annular orifice may be narrow in width in comparison to the thickness of the surround and the method may comprise the step of separating the surround from an annular ring of sprue formed by elastomer which has solidified in or outside the annular orifice by tearing while the elastomer is still hot from the injection molding step.
    Type: Grant
    Filed: January 14, 1993
    Date of Patent: January 9, 2001
    Inventors: Patrick Arthur Leach, David Ian Leach
  • Patent number: 6165393
    Abstract: The present invention is for providing a production method of a dielectric lens with the excellent productivity, capable of achieving the shape accuracy or density homogeneity of the demanded level, and capable of injection molding of a matching layer without forming a gap with respect to a lens main body. A lens main body is formed by the injection compression molding method, using a composite dielectric material containing a thermoplastic resin as the dielectric material for the lens main body. After forming a matching layer (first surface side matching layer) on either surface of the front or rear surfaces (first surface) side of the lens main body, and injecting a matching layer material, a matching layer (second surface side matching layer) is formed on the other surface of the lens main body (that is, the matching layer is formed by the two operation injection molding method of injecting to one surface side of the lens main body, and then injection to the other surface side).
    Type: Grant
    Filed: August 5, 1999
    Date of Patent: December 26, 2000
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Hiroshi Nonogaki, Keizo Yamamoto, Tatsuhiro Nakamura
  • Patent number: 6162381
    Abstract: A plurality of mutually separate electrodes supported by a support frame are pre-molded into an integral electrode assembly in which the electrodes are connected with each other through resin moldings. The electrode assembly thus formed is cut off from the support frame to provide a primary product in which the electrodes are electrically disconnected from each other. The primary product is then molded into a molded unit having the electrodes embedded therein. Preferably, the primary product is placed in a mold and supported at a predetermined location by a plurality of support pins which abut against the resin moldings. The support pins are removed from the molded unit while leaving corresponding through-holes after a molten resin is poured into the mold and cooled. The electrodes embedded in the molded unit are prevented from being exposed to the outside of the molded unit via through-holes.
    Type: Grant
    Filed: March 2, 1994
    Date of Patent: December 19, 2000
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Takashi Onishi, Toshiaki Hata
  • Patent number: 6126877
    Abstract: The cavity of a mold for making a plastics material part is lined using at least two, preferably decorative, pieces of film. The pieces of film are shaped and cut out so as to be accurately juxtaposed in the film cavity. Molten plastics material is introduced into the mold cavity in register with each piece of film in controlled manner so that the front of plastics material flowing within the mold cavity for the purpose of filling it advances within the mold so as to stretch each piece of film in centrifugal manner so that the film is neither displaced nor folded. The fronts of plastics material advancing over each piece of film meet either in locations of the mold where there is no film or else in register with the facing edges of two pieces of films, where appropriate, so that the entire surface of each piece of film is covered in a layer of plastics material. If necessary an additional quantity of molten plastics material is then introduced into the mold cavity so as to fill it completely.
    Type: Grant
    Filed: April 30, 1999
    Date of Patent: October 3, 2000
    Assignee: Compagnie & Plastic Omnium
    Inventors: Denis Gille, Thierry Barrault
  • Patent number: 6106755
    Abstract: A urethane hammer or other hand-held striking tool having a handle portion cast of a lower durometer, more flexible grade of urethane material, and a head portion which is cast around a metallic weight at the end of the handle portion. The flexible handle absorbs shocks, while the hard material of the head provides a durable, effective striking surface. The tool is cast using a two-stage process. In the first stage, the handle portion is cast with the metal weight located in its end. The handle portion is then placed in a second mold in which the weight on the end of the handle extends into a larger cavity corresponding to the head portion of the tool. The higher durometer urethane material is then cast in this cavity so as to encase the weight and the end of the handle portion.
    Type: Grant
    Filed: September 9, 1997
    Date of Patent: August 22, 2000
    Inventor: Rolf F. K. G. Pfoertner
  • Patent number: 6103037
    Abstract: A method of forming a catheter comprising the steps of a) loading an inner layer on a mandrel; b) loading a reinforcing braid layer over the inner layer; c) adding a terminal tip to one end of the inner layer, the terminal tip applied directly over the inner layer with no portion of the reinforcing braid therebetween; d) loading a plurality of axial jacket sections over the braid layer, one of the axial jacket sections engaging an adjacent one of the plurality of axial jacket sections along a joint including substantially axially oriented seams; e) applying a shrink tube over the plurality of axial jacket sections and heating the shrink tube to cause the plurality of axial jacket sections to bond with each other, the braid layer and the inner layer; f) removing the shrink tube; and g) removing the mandrel.
    Type: Grant
    Filed: October 16, 1997
    Date of Patent: August 15, 2000
    Assignee: Medi-Dyne Inc.
    Inventor: James C. Wilson
  • Patent number: 6093353
    Abstract: Injection molding techniques are utilized to form complex switches without removal from a molding machine. Multi-shot molding techniques are utilized, as are rotational indexing molding machines. Springs are formed of resilient elastomeric material. Contacts may be inserted into the mold prior to injection of the plastic, or can be formed from conductive plastic. The present method reduces the cost and complexity of forming electrical components.
    Type: Grant
    Filed: August 3, 1998
    Date of Patent: July 25, 2000
    Assignee: Lear Automotive Dearborn, Inc.
    Inventor: Timothy F. O'Brien
  • Patent number: 6071455
    Abstract: A process is disclosed for manufacturing a thermoplastic panel or piece having a resilient injection molded portion. The panel or piece of the present invention may be used in a variety of applications such as to provide sealing ends on thermoplastic panels or to create resiliently closeable passages in thermoplastic panels through which wires and other objects may be passed while maintaining an even surface appearance of the baseboard panel. Other uses include attaching one or more thermoplastic pieces together.
    Type: Grant
    Filed: September 28, 1998
    Date of Patent: June 6, 2000
    Assignee: Crane Plastics Company Limited Partnership
    Inventors: Herbert Hutchison, Paul R. Pelfrey, Byron Rose
  • Patent number: 6066225
    Abstract: The fascia of a vehicle heating control panel is obtained by overmolding onto a monolayer flat film made of polycarbonate, elements made of different thermoplastic materials so as to allow marks and/or symbols formed by silkscreen printing on the film and present on a rotary knob to be illuminated by a transparency, while at the same time preventing the leaking of light.
    Type: Grant
    Filed: March 18, 1998
    Date of Patent: May 23, 2000
    Assignee: AFE Plasturgie
    Inventor: Albert Lopes
  • Patent number: 6066282
    Abstract: This invention relates to a process for making a toothbrush comprising making a toothbrush head having at its basal end a first engagement part, then making a toothbrush grip handle from a plastics material by a handle molding process, during the handle molding process forming a second engagement part at the head end of the handle in engagement with the first engagement part, such that the engagement between the first and second engagement parts retains the head and grip handle together, and toothbrushes made by this process.
    Type: Grant
    Filed: May 27, 1998
    Date of Patent: May 23, 2000
    Assignee: SmithKline Beecham Consumer Healthcare GmbH
    Inventor: Hans Kramer
  • Patent number: 6054087
    Abstract: A decorative sheet including a decoration and a process for forming the sheet are disclosed. This process comprises the following steps:using a mold consisting of at least two parts, at least one part of which is formed of at least two elements, at least one element (5) corresponding to the medallion and at least one other element (6) corresponding to the periphery of the piece, around the medallion;placing the decorative sheet (20) on the element corresponding to the medallion and closing the mold;within the cavity of the mold, isolating the space (23) located below the decorative sheet from the peripheral space (21);injecting plastic material in succession into the spaces thus isolated; andejecting the piece obtained.
    Type: Grant
    Filed: May 26, 1995
    Date of Patent: April 25, 2000
    Assignee: Centre d'Etudes et Recherche pour l'Automobile (Cera)
    Inventors: Daniel Noirot, Olivier Vitrant
  • Patent number: 6042768
    Abstract: A method of making a golf ball having a core and outer polyurethane cover by placing a first portion of polyurethane in a first cavity and allowing the first portion of polyurethane to partially cure to a selected state of gel. The core is positioned within the cavity while the core is vertically and laterally centered within the cavity. A second portion of polyurethane is placed in a second cavity at a time subsequent to placing the first portion of polyurethane in the first cavity. The second portion of polyurethane is allowed to partially care. The first and second cavities are mated together to cure the polyurethane around the core.
    Type: Grant
    Filed: December 7, 1998
    Date of Patent: March 28, 2000
    Assignee: Acushnet Company
    Inventors: John Calabria, Dean A. Snell, Shenshen Wu
  • Patent number: 6036908
    Abstract: An injection molding die is provided with a cavity block including a stationary mold having first and second split molding cavity portions having different shapes, and a movable mold having first and second common split molding cavity portions, so as to form first and second molding cavities between the stationary and movable molds in mold clamping. Each time a molding shot is performed, a component part to be sealed is inserted while a primary molded piece formed in the first molding cavity is transferred to the second molding cavity and a secondary molded piece formed in the second molding cavity is removed. Thus, the first and second molded pieces can be simultaneously produced.
    Type: Grant
    Filed: October 9, 1997
    Date of Patent: March 14, 2000
    Assignees: Kabushiki Kaisha Ohno, Hirotoshi Nishida
    Inventors: Hirotoshi Nishida, Yoshimi Ohno
  • Patent number: 6024904
    Abstract: An antifogging window plate has a transparent film and a base both made of thermoplastic resins. Conductive lines and electrodes are printed using a conductive paste on one side of the film, which is then bonded to the base. One portion of each electrode is exposed as a terminal portion to be connected to an electric contact member. The window plate is made by injection molding with the surface of the film opposite from the printed surface being in contact with the cavity wall of the mold, so that the integration of the film with the base is effected simultaneously with the forming of base. Each contact member is subsequently fitted in an injection-molded void facing the terminal portion, or is secured in place at the same time as the injection molding.
    Type: Grant
    Filed: May 12, 1997
    Date of Patent: February 15, 2000
    Assignee: Tsutsunaka Plastic Industry Co., Ltd.
    Inventor: Hiroyoshi Nanri
  • Patent number: 5984656
    Abstract: The forming surface of a forming mold (5) for postforming of a shaped cord (2) in the shape of a frame extruded onto a glass (1) is slightly curved in the direction of the length of shaped cord (2). In the final position of forming mold (4) during the postforming operation, lateral edges (11, 12) are thus slightly above the surface of shaped cord (2). This avoids the creation of imprints in the form of lines or edges on the shaped cord, and a smooth transition is achieved between the postformed length of the shaped cord that attaches there.
    Type: Grant
    Filed: August 6, 1997
    Date of Patent: November 16, 1999
    Assignee: Saint-Gobain Vitrage
    Inventors: Florez Kittel, Helmut Krumm
  • Patent number: 5968440
    Abstract: A plastic article and method of molding same is provided where the plastic article includes a plastic member having a first ridge and a second ridge. The plastic member is partially absorbed into and is in bonded engagement with at least a portion of a first laminate and the first laminate has an edge imbedded in the first ridge of the plastic member. Also, the plastic member is partially absorbed into and is in bonded engagement with at least a portion of a second laminate and the second laminate has a first edge imbedded in the first ridge of the plastic member and a second edge imbedded in the second ridge of the plastic member. The plastic member is also partially absorbed into and is in bonded engagement with at least a portion of a third laminate and the third laminate has an edge imbedded in the second ridge of the plastic member.
    Type: Grant
    Filed: September 16, 1996
    Date of Patent: October 19, 1999
    Inventor: Siebolt Hettinga
  • Patent number: 5958097
    Abstract: A filter insert. The filter insert includes an accordion fold pack that is made of a filter material and is joined to a filter frame. The material of the filter frame is injected in a flowable state into the folds of the accordion fold pack which are open in the on-coming flow direction of the medium to be filtered. The material is subsequently hardened during automatic claw fixation with the fold walls. The entire peripheral edge of the accordion fold pack sealingly overlaps the outer boundary surfaces of the filter frame, and is designed as a sealing device.
    Type: Grant
    Filed: June 22, 1998
    Date of Patent: September 28, 1999
    Assignee: Firma Carl Freudenberg
    Inventors: Ulrich Schlor, Udo Michaelis, Jorgen Knudsen
  • Patent number: 5951929
    Abstract: In a method of forming a catheter having an inner layer, an intermediate braided layer and an outer jacket, wherein the intermediate braided layer terminates axially before the inner layer, leaving a forward end portion of the inner layer exposed, the steps of:a) before applying the outer jacket, loading a plastic sleeve over a forward end of the intermediate braided layer adjacent the forward end portion of the inner layer;b) heating the plastic sleeve to a temperature sufficient to melt the plastic sleeve;c) loading a terminal tip having an axial length over a forward end portion of the inner layer into abutting relationship with the forward end of the intermediate braided layer such that the terminal tip is supported by the forward end portion of the inner layer along all of the axial length of the terminal tip and not reinforced anywhere along the axial length by the intermediate braided layer;d) loading the outer jacket over the braided layer;e) loading a shrink tube over the outer jacket; andf) heating
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: September 14, 1999
    Assignee: Medi-Dyne Inc.
    Inventor: James C. Wilson
  • Patent number: 5947843
    Abstract: The invention relates to a golf ball having a polyurethane cover substantially free of surface defects caused by a pin mold. By centering the golf ball core in its cover without the use of a mold having retractable or fixed alignment pins, a golf ball without surface defects in its cover resulting from the pins is achieved. To accomplish this "pinless" centering, a centering apparatus is used to properly position the golf ball core in the first mold half used to form the polyurethane cover.
    Type: Grant
    Filed: June 2, 1997
    Date of Patent: September 7, 1999
    Assignee: Acushnet Company
    Inventors: John Calabria, Dean A. Snell, Shenshen Wu
  • Patent number: RE37340
    Abstract: A solderless twist on wire connector and a method of making a solderless twist on wire junction encapsulating twist on wire connector by securing a prior art twist on wire connector in a shell to produce a wire junction encapsulating twist on wire connector that can in one operation permit the user to twist the connector to simultaneously compress the junction ends of electrical wires into low resistance electrical contact while encapsulating the junction ends of the electrical wires in a solderless substance. The process includes the method making a twist on wire connector by encapsulating a prior art twist on wire connector in a shell to produce a wire junction encapsulating twist on wire connector having a chamber for an encapsulating material. In one embodiment the twist on wire junction encapsulating twist on wire connector includes a puncturable seal and in another embodiment a second compartment for holding a mixable encapsulating materials.
    Type: Grant
    Filed: July 16, 1997
    Date of Patent: August 28, 2001
    Assignee: King Technology of Missouri, Inc.
    Inventor: Lloyd Herbert King, Jr.