Conditioning Or Treatment Of Preform Patents (Class 264/265)
  • Patent number: 5229047
    Abstract: A method and apparatus for producing foam elastomer tires for various uses including bicycle and wheel chair tires with a minimum amount of wasted material. The method involves spin casting the tires wherein a mold with suitably designed tapers on the exterior surface is placed between press plates with corresponding annular tapers which cause the mold to be accurately centered within the press plates when the press is closed. The preblended liquid foamable materials are either poured directly into the mold or onto a surface immediately adjacent to the mold gate. One or more tension members are located within the mold such that either the incoming stream of preblended liquid foamable materials wet the tension member(s), or the tension member(s) lie more or less in the path of the expanding foamable material as it fills and forces its way out of the mold, or (preferably) both.
    Type: Grant
    Filed: November 4, 1991
    Date of Patent: July 20, 1993
    Inventor: Roger Becker
  • Patent number: 5223189
    Abstract: The invention provides an apparatus and method by which an opening into a lateral pipe connection for a pipeline into which a liner is being installed may be sealed and protectively lined. The invention features a bushing which is emplaced in the lateral connection by use of an expandable mandrel and a control means. The bushing includes an integral heating element for softening the thermoplastic material from which the bushing is formed. O-rings are positioned between the bushing and the lateral pipe to form a seal.
    Type: Grant
    Filed: January 7, 1992
    Date of Patent: June 29, 1993
    Assignee: Gundle Lining Systems, Inc.
    Inventor: Struve Friedrich
  • Patent number: 5217658
    Abstract: A method for repairing a hot-blast, long-time cupola furnace by removing residual slag and relining the cupola furnace including feeding liquid nitrogen to the cupola furnace immediately at the end of a smelting operation and simultaneously with the feeding of the liquid nitrogen, removing residual slag from the furnace. The furnace is cooled with liquid nitrogen until the furnace reaches a temperature of less than or equal to 40.degree. C. after which the furnace is relined with fresh refractory tamping compound.
    Type: Grant
    Filed: August 5, 1991
    Date of Patent: June 8, 1993
    Assignee: Georg Fischer AG
    Inventors: Hans Schmidt, Max Lehner, Helmut Grey
  • Patent number: 5213739
    Abstract: A process for bonding elastomeric material to a metal part includes coating a heat curable adhesive on surfaces of the metal part to be bonded, placing the metal part in a mold, preheating a bottom plate and an upper transfer pot of a transfer molding machine to a predetermined cure temperature, loading a predetermined quantity of uncured elastomeric material into the transfer pot, clamping the mold containing the adhesive coated metal part to the bottom plate, and almost contemporaneously, pressing the uncured elastomeric material into the mold while maintaining heat and pressure in the mold for a time sufficient to vulcanize and thereby cure the elastomeric material simultaneously with the adhesive, whereby contacting surfaces of the metal part are strongly bonded to the vulcanized elastomeric material.
    Type: Grant
    Filed: June 26, 1991
    Date of Patent: May 25, 1993
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: George E. Dickerson, Henry L. Kelley
  • Patent number: 5205892
    Abstract: Process for unifying under heat thin structures (20) of synthetic material such as woven and non-woven fabrics, moquettes and other kinds, with manufactured products (13) made of plastic material, especially by means of well-known techniques such as molding, vacuum forming, thermoforming, calendering and others, the process consisting in the fact that the thin structure (20) is made heat-conducting by treatment with emulsions, pastes etcetera containing water, metals, heat-conducting products generally, and is made to adhere to a wall (17) of metal or of some other highly heat-conducting material, so that, during the unifying process the heat transferred from the plastic material forming the manufactured product (13) to the aforesaid thin structure (20) passes rapidly from the latter to the heat-conducting wall (17) thus preventing said structure (20) from becoming overheated and damaged.
    Type: Grant
    Filed: September 27, 1991
    Date of Patent: April 27, 1993
    Inventors: Giuseppe Gagliani, Margherita Sagona
  • Patent number: 5190705
    Abstract: A method of repairing an underground large-diameter pipe having an inner surface includes first supporting with props inside the pipe spaced inward from its inner surface a lining having a shape conforming to that of the inner surface and then injecting a hardenable mass into the space between the inner surface and the lining and substantially completely filling this space with the mass. The mass is then cured and the props are removed. Then the cycle can be repeated for the next lining section. The lining is made of a durable synthetic resin, polyvinylchloride or high-density polyethylene.
    Type: Grant
    Filed: September 13, 1991
    Date of Patent: March 2, 1993
    Inventor: Leo Corazza
  • Patent number: 5188787
    Abstract: This invention relates to an injection moulding process for the manufacture of multi-layered articles, especially articles having barrier properties. The process includes clamping a thermoplastic film over the cavity of a mould of an injection moulding process, the film being capable of being stretched. The film is then stretched within the mould by inserting the core of the mould, preferably using a core in which a central part enters the mould and partially stretches the film prior to the remainder of the core entering the mould. The mould is then closed, excess film is trimmed off and polymer is injected into the mould cavity. The resultant article is a multi-layered injection moulded article which, depending on the characteristics of the film and injected polymer, may have barrier properties to oxygen, liquids or the like that are superior to articles moulded from only the polymer. The process is particularly useful in the moulding of containers having a depth:width ratio of at least 0.5.
    Type: Grant
    Filed: July 17, 1992
    Date of Patent: February 23, 1993
    Assignee: Du Pont Canada Inc.
    Inventors: David C. King, Rupert M. Lillis, George White
  • Patent number: 5158734
    Abstract: A two component leadwire system is disclosed for electrical connection between biomedical electrodes and electrical equipment for diagnostic or therapeutic use. One leadwire component has a bayonet terminus and can be rugged for reuse. The second leadwire is an inexpensively-made receptacle for making electrical contact with the bayonet. The receptable has a socket for receiving the bayonet and an electrical conductor surrounded by a resilient, insulative sheath. When the bayonet is inserted into the socket, the sheath resiliently grips the bayonet and holds the bayonet in electrical contact with the conductor. A method for making the receptacle component, involving dip molding of the conductor arrayed on a mandril, is also disclosed.
    Type: Grant
    Filed: February 24, 1992
    Date of Patent: October 27, 1992
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Terry S. Nees
  • Patent number: 5147591
    Abstract: A method for producing a lid device for a wide-mouthed container which comprises a lid body having an opening of a predetermined shape, and a closure member made of a soft synthetic resin for closing the opening of the lid body. According to the method, the lid body and a vapor impervious film are placed between a first mold body and a second mold body with the film located on the side of the second mold body. The first mold body has a closure forming cavity, whereas the second mold body has a tab forming cavity. A fluid synthetic resin is injected under pressure from the side of the first mold body to fill the closure forming cavity. The resin is caused to break through the film to fill the tab forming cavity, thereby forming a pull tab integral with the closure member.
    Type: Grant
    Filed: April 18, 1991
    Date of Patent: September 15, 1992
    Assignee: Tenryu Chemical Industry Co., Ltd.
    Inventor: Yoshiaki Yoshida
  • Patent number: 5112553
    Abstract: A process for preparing an injection-molded article having a three-dimensional pattern on a surface thereof includes placing a master film of a thermoplastic resin having a three-dimensional master pattern formed on a region thereof into a mold such that the master pattern is exposed to the mold cavity. An injection-moldable resin is then injected into the mold cavity so as to cause a surface region of the resin to conform to the three-dimensional master pattern on the master film, and to thereby transfer the master pattern onto said surface region of the resin. The master film is then removed from the surface region of the injection molded resin to thereby expose said three-dimensional pattern formed thereupon. Preferably the master film is formed of a thermoplastic resin having a melting point greater than the injection molding temperature. Other lower melting point thermoplastic films can be used by metallizing the film's surface so that it withstands the injection molding temperature.
    Type: Grant
    Filed: September 4, 1990
    Date of Patent: May 12, 1992
    Assignee: Polyplastics Co., Ltd.
    Inventor: Shigeru Nedzu
  • Patent number: 5108790
    Abstract: Dry cementitious compositions and packages and methods for their application. The dry compositions do not have to be mixed with water but instead are poured, sprayed or troweled onto a substrate which contains water in an amount in excess of that necessary for the hydration of the cementitious materials. These compositions can be applied by layering, dropping through a conduit, or preferably, merely dropped into the water.
    Type: Grant
    Filed: May 27, 1988
    Date of Patent: April 28, 1992
    Inventor: H. Nash Babcock
  • Patent number: 5094795
    Abstract: A method is shown for forming a flange on an end of a plastic pipe liner of the type used to line a tubular member. A reinforced disc having a rigid portion and an elastomeric portion is placed about the liner exterior and moved into position flush with the flanged end of the tubular member. A retaining ring is placed about the reinforced disc and the disc and liner exposed end are heated to render the materials malleable. A forming unit is then used to apply force to the liner to flow the liner into a reformed shape having a greater external diameter than the remainder of the liner. The forming operation also bonds the reinforced disc to the reformed liner end to further resist any tendency of the liner end to be retracted into the interior of the tubular member.
    Type: Grant
    Filed: April 24, 1990
    Date of Patent: March 10, 1992
    Inventors: James S. McMillan, Sama'an Tarsha
  • Patent number: 5089201
    Abstract: A method for preparing an elastic roller having a layer of elastic material disposed about and integrally molded to a shaft-shaped core metal member, includes the steps of disposing a cylindrical molding device for holding the elastic material, coating the core metal member with an adhesive, and mounting first and second lid members at opposite ends of the molding device. Each lid member holds a respective end of the core metal member so that the core metal member is disposed concentrically within said molding device. A sealing rubber is disposed between each lid member and the core metal member to prevent elastic material from entering a bearing portion of the core metal member, and the elastic material is injected into the molding device. The elastic material is cured, and the lid members are removed such that an extending portion of each lid member removes burrs formed at peripheral end portions of the roller.
    Type: Grant
    Filed: August 14, 1990
    Date of Patent: February 18, 1992
    Assignee: Canon Kabushiki Kaisha
    Inventor: Masaaki Takahashi
  • Patent number: 5077887
    Abstract: A method for producing a stretcher leveler gripper means for use in a stretcher leveler apparatus in which the surface for engagement with the metal to be stretched comprises a smooth polymeric material most desirably of a thermoset polyurethane.
    Type: Grant
    Filed: August 29, 1990
    Date of Patent: January 7, 1992
    Inventor: Bertram A. Holloway
  • Patent number: 5068076
    Abstract: Producing an encapsulated glazing unit having a weather-stable film on an exposed surface of the gasket. There is provided a two-part mold whose sections cooperate to define a mold cavity for receiving the peripheral margins of the transparent glazing unit upon which the gasket is to be formed. A sheet of the weather-stable film is positioned over the mold section having the portion of the cavity which defines the surface to which the film is to be applied. With the mold closed, a flowable gasket forming material is injected into the mold cavity behind the film to deform the film into conformity with the mold surface. As the gasket cures in situ, the film fuses to its surface. The encapsulated unit is removed from the mold and the excess film is trimmed from around the gasket.
    Type: Grant
    Filed: July 28, 1988
    Date of Patent: November 26, 1991
    Assignee: Libbey-Owens-Ford Co.
    Inventors: William R. Weaver, James E. Matzinger
  • Patent number: 5013509
    Abstract: A tire clad concrete log and method and apparatus for forming a tire clad concrete log. The method includes the steps of providing a plurality of used tires which are made into a form by placing them in sidewall-to-sidewall contact, providing a quantity of a waste ash which is mixed as a binder in a manner making a concrete material, and filling the form with the concrete material while also maintaining the used tires in sidewall-to-sidewall contact. The tire clad concrete log thus comprises a plurality of used tires disposed in sidewall-to-sidewall contact wherein a concrete material formed at least in part by waste ash is interlockingly disposed within the used tires.
    Type: Grant
    Filed: October 25, 1990
    Date of Patent: May 7, 1991
    Inventor: Donald L. Kiselewski
  • Patent number: 5013516
    Abstract: A method for manufacturing a cover for a can-like container providing improved peelability of a handle. The cover is made by forming a second resin layer by injection molding or compression forming on a multi-layer sheet which oxygen, water, and the like cannot permeate. A thermally weldable first resin layer is provided on the upper surface of the multi-layer sheet. The handle is formed by the second resin layer. A treatment is carried out for allowing the handle to be easily peeled off the multi-layer sheet to all or part of a region of the multi-layer sheet in contact with the underside of the handle.
    Type: Grant
    Filed: May 25, 1984
    Date of Patent: May 7, 1991
    Assignee: Showa Denko K.K.
    Inventors: Takashi Suzuki, Tetsuo Yasuda, Otohiko Miyauchi, Junji Yotsuyanagi
  • Patent number: 5009821
    Abstract: Fiber reinforced molded plastic articles, without fiber readout surface defects, are prepared in either resin transfer molding or reinforced reaction injection molding processes, by disposing a surface finishing film across the mold cavity prior to the insertion of the fiber preform and the injection of the curable polymeric precursor materials, thereby producing a finished article wherein the surface finishing film is bonded to the surface of the article filling the areas between those fibers near the surface which would otherwise cause fiber readout.
    Type: Grant
    Filed: February 23, 1989
    Date of Patent: April 23, 1991
    Assignee: Libbey-Owens-Ford Co.
    Inventor: William R. Weaver
  • Patent number: 5000903
    Abstract: Coated plastic products are prepared by chemically bonding a protective coating material to at least a portion of the surface of a plastic substrate, by disposing a web of a protective coating material over the cavity of a mold, and thereafter injecting polymeric precursor materials into the mold behind the web thereby conforming the web to the surface of the mold cavity. As the polymeric precursor materials react in situ to form the plastic substrate, they also chemically bond to the protective coating material.
    Type: Grant
    Filed: April 6, 1989
    Date of Patent: March 19, 1991
    Assignee: Libbey-Owens-Ford Co.
    Inventors: James E. Matzinger, Robert D. Kroshefsky, William R. Weaver
  • Patent number: 4997309
    Abstract: A tire clad concrete log and method and apparatus for forming a tire clad concrete log. The method includes the steps of providing a plurality of used tires which are made into a form by placing them in sidewall-to-sidewall contact, providing a quantity of a waste ash which is mixed as a binder in a manner making a concrete material, and filling the form with the concrete material while also maintaining the used tires in sidewall-to-sidewall contact. The tire clad concrete log thus comprises a plurality of used tires disposed in sidewall-to-sidewall contact wherein a concrete material formed at least in part by waste ash is interlockingly disposed within the used tires.
    Type: Grant
    Filed: July 13, 1989
    Date of Patent: March 5, 1991
    Inventor: Donald L. Kiselewski
  • Patent number: 4995613
    Abstract: A moderately resilient, energy-absorbing practice golf ball and a process for manufacturing same are disclosed, the ball having a dense metal core surrounded with a thick layer of resilient material. To this, a fabric cover able to carry marking powder is bound. The practice ball leaves powder marks at its points of impact, and has a substantially reduced velocity upon rebound. The process of manufacturing the practice ball includes the steps of binding dense metal shot or granules together with resilient adhesive to form a core, wrapping uncured rubber strips into a thick layer around the core, pressing the surface of the layer to make it spherical; pressing a layer of textile fabric into the surface of the uncured rubber, curing the ball with elevated temperature and pressure to fuse its layers together and abrading the ball's fabric surface to raise a powder-carrying nap.
    Type: Grant
    Filed: September 28, 1989
    Date of Patent: February 26, 1991
    Assignee: Spin-Alizer Corporation
    Inventor: Grant W. Walker
  • Patent number: 4985189
    Abstract: A method of producing a skin-covered pad for a seat, which includes (a) preparing a lower mold which has a cavity formed therein, the lower mold having a first electrode mounted thereto through an insulator, the first electrode having a plurality of projections which are exposed to the cavity; (b) putting a bag-shaped outer skin member into the cavity, the skin member being thermally plastic; (c) putting an upper mold on the lower mold to close the cavity, the upper mold having an aperture formed therethrough; (d) projecting a press member into the cavity through the aperture, the press member having at its work head a second electrode secured thereto through an insulator, the second electrode having at its front face recesses which are shaped to match with the projections of the first electrode; (e) pressing the recessed face of the second electrode against the projections of the first electrode with a part of the outer skin member therebetween; (f) applying a high frequency current between the first and sec
    Type: Grant
    Filed: May 26, 1988
    Date of Patent: January 15, 1991
    Assignee: Ikeda Bussan Co., Ltd.
    Inventors: Takashi Sugiura, Ichiro Matsuura, Fumio Miyauchi, Toyoharu Chiyoshi
  • Patent number: 4985191
    Abstract: A pinch valve is fabricated by providing an elongated tubular housing with a cut-back portion at an outlet end, applying adhesive to the cut back portion, with a ring around the cut-back portion, placing the housing and ring in a mold and heating all three, providing a core rod inside the housing and forcing an elastomer into the space between the core rod and the housing and between the housing and the ring, curing the elastomer and cooling everything to allow the ring to thermally contract to engage the elastomer between the housing and the ring.
    Type: Grant
    Filed: April 26, 1990
    Date of Patent: January 15, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: John L. Hannon, Jr.
  • Patent number: 4980109
    Abstract: An insert injection molding method is characterized by using an insert member having an applied surface coating comprised of an organic polymer compound, and at least one compounds selected from the group consisting of spiro ortho ester compound, spiro orthocarbonate compounds, trioxacylooctane compounds, and ketal lactone compounds.
    Type: Grant
    Filed: May 1, 1989
    Date of Patent: December 25, 1990
    Assignee: Polyplastics Co., Ltd.
    Inventors: Seiji Yamamoto, Kiichiro Fukui
  • Patent number: 4968383
    Abstract: A method for adhesively bonding a first body to a second body, the first body comprising a metallic substrate, such as a piece of steel, or comprising a metallic substrate and a filler therein, such as ceramic fiber reinforced aluminum, the second body comprising any type of substrate, such as a piece of glass, plastic or metal. The first body is pretreated by placing it in the path of an energy beam, such as a laser beam, to form projections on the metallic substrate by evaporation and/or melting of the metallic substrate of the first body, substantially all of the projections being less than 20 micrometers in height, or to expose filler by evaporation of the metallic substrate of the first body. The second body can be untreated, pretreated as above or pretreated another way, such as by solvent washing or sandblasting. An adhesive is then coated on the pretreated area of the first body and the first body adhered to the second body.
    Type: Grant
    Filed: June 8, 1989
    Date of Patent: November 6, 1990
    Assignee: The Dow Chemical Company
    Inventors: Curtis L. Volkmann, John J. Kester, Gregory A. Stevens
  • Patent number: 4965037
    Abstract: Molded composites, useful for manufacturing for example entry way doors, furniture components, building decorative or structural components, etc., are produced by a process in which a substrate and surface finishing film are placed in a mold, the mold is closed, and reactive polymeric precursors are injected between the substrate and the surface finishing film. The injection pressure and the autogenous pressure incident to the curing of the reactive polymeric precursors deform the surface finishing film into intimate contact with a surface of the mold cavity, and simultaneously the polymeric precursors chemically bond to the surface finishing film.
    Type: Grant
    Filed: July 17, 1989
    Date of Patent: October 23, 1990
    Assignee: Libbey-Owens-Ford Co.
    Inventors: William R. Weaver, James E. Matzinger
  • Patent number: 4959190
    Abstract: The process for making a plastic container by blow molding of a tubular parison made of a thermoplastic material, includes guiding a tube into a divided open blow mold, closing the blow mold and feeding pressurized air in the tubular parison squeezed off in the blow mold. However in the open blow mold which has a suitable receptacle at least one single-piece hoop ring made of thermoplastic material which could be made with usable tolerances by injection molding is mounted on the section and bonded with the tubular parison. An unsorted container ring which has an outer collar is used in the process and is fed to a preheat station in which the container ring is made stress-free and simultaneously is oriented in a plane.
    Type: Grant
    Filed: December 16, 1988
    Date of Patent: September 25, 1990
    Assignee: Sotralentz S.A.
    Inventors: Pierre Pfeiffer, Benoit Cheval, Paul Sigwalt
  • Patent number: 4957678
    Abstract: A pneumatic type pipe-end protector pressurizable for clamping onto a pipe-end is manufactured by centering a containment ring supported by a filling duct in a casting mold, covering the filling inlet with a pneumatically expandable element attached to the ring maintaining the outer end of the filling duct in communication with the ambient atmosphere, and then introducing plastic into the casting mold for forming the protector body.
    Type: Grant
    Filed: March 13, 1989
    Date of Patent: September 18, 1990
    Inventor: Peter Budde
  • Patent number: 4957685
    Abstract: Method for making a transportable brick panel in which a mold on which a brick panel is to be formed is set out, with the mold including a substantially flat bottom surface. A soft deformable membrane is laid over the bottom surface, with the membrane being such as to form a seal around face edges of bricks placed on it to prevent fine cementitious particles in mortar placed between the bricks from contaminating faces of the bricks. The deformable membrane is also such as to inhibit movement of bricks placed on the membrane. Courses of brickwork are arranged in the mold on the membrane, with individual bricks being substantially evenly spaced apart with spaces therebetween for receiving fluid mortar in the spaces. Reinforcing bars are arranged to pass through aligned holes in columns of bricks so as to structurally extend through the top and bottom courses of bricks. Fluid mortar is poured to fill the spaces between the individual bricks and penetrate holes in the bricks.
    Type: Grant
    Filed: July 19, 1989
    Date of Patent: September 18, 1990
    Assignee: Panelbrick Industries PTY. Limited
    Inventor: Phillip H. Boot
  • Patent number: 4954299
    Abstract: Large fittings or other structures are made by rotationally moulding a first component 18 of polyethylene and joining cylindrical pups 20, 22, 24 of polyethylene to the component by butt fusion joints 26, 28, 30. The structure within the boundary 50 is irradiated with gamma radiation followed by post-heating to remove free radicals. The extremities of the pups are shielded to prevent irradiation. Their capability to be joined to polyethylene pipes 12, 14, 16 by butt-fusion joints 32, 34, 36 is unimpaired. The irradiation introduces cross-linking to give improved properties such as impact resistance and stress crack resistance and to bring the fitting within the specification for polyethylene pipe for natural gas distribution. The joints 26, 28, 30 are made using differential heating of the ends to be joined to compensate for differences in melt flow index. Alternatively, the component 18 is slightly irradiated to lower its MFI before the pups are joined to it.
    Type: Grant
    Filed: June 28, 1989
    Date of Patent: September 4, 1990
    Inventors: John M. Greig, Jeremy A. Bowman
  • Patent number: 4944908
    Abstract: A printed circuit is formed by conventional methods over an adhesive coating applied to a flexible high temperature withstandability disposable backing to form a flexible laminate which is positioned in a cavity of an injection mold to conform to surface variations. The printed circuit conductors are surrounded on three sides by molten plastic material injected into the mold cavity to embed the conductors in the respective surfaces of the molded plastic article, which surfaces are non-coplanar and adjoining and the conductors are continuous from one surface to the other. The bond strength of the adhesive is preferably high with regard to the backing and low with regard to the printed circuit conductors to permit adhesive and backing to be peeled away after molding, thereby providing a three diemensional printed circuit in, for example, a recessed area of a molded plastic housing part of electrical apparatus.
    Type: Grant
    Filed: October 28, 1988
    Date of Patent: July 31, 1990
    Assignee: Eaton Corporation
    Inventors: Denis J. Leveque, Neil A. Czarnecki
  • Patent number: 4911871
    Abstract: A comfort-enhancing improvement upon a known dental film packet having sensitized film and protective opaque sheets enclosed by a light-tight envelope that includes an opposed pair of generally parallel walls covering the sheets, those walls being joined together along facing marginal areas thereof surrounding the sheets so as to define a main body portion and a perimetric edge portion of the envelope. The improvement includes a pliant bead of substantially non-porous, non-toxic, polymeric elastomeric material, preferably a silicone resin, that is molded in situ around at least part of the perimetric edge portion to encapsulate that part of the edge portion with such material and thereby provide the encapsulated part with a softer, smoother, and more rounded peripheral surface.
    Type: Grant
    Filed: August 19, 1988
    Date of Patent: March 27, 1990
    Assignee: Eastman Kodak Company
    Inventor: Elmer W. Liese, Jr.
  • Patent number: 4898705
    Abstract: A method for producing a synthetic resin union joint, the method including the steps of forming a union nut having a screw portion and a union sleeve of an elastically softenable material, the union sleeve having a union swivel end and a connecting end, heating a length of the union nut at least equal to a thickness dimension of the flange part but not extending to the screw portion so as to elastically soften the length of the union nut, abutting one end of a truncated cone-shaped expansion guide with an end face of the union swivel end, shifting and enlarging the length of the union nut along the expansion guide so as to pass over the union swivel end and so that the union nut passes over the guide, and returning the length of the union nut to its original configuration due to a restoring force of the elastically softenable material so as to be positioned within the union swivel end and the connecting end.
    Type: Grant
    Filed: May 16, 1988
    Date of Patent: February 6, 1990
    Assignee: Kubotatekko Kabushiki Kaisha
    Inventors: Junsuke Kyomen, Masayuki Sakaguchi, Hiroto Fujii
  • Patent number: 4886630
    Abstract: A method of producing a skin-covered pad for a seat, which includes by steps (a) preparing a lower mold which has a cavity formed therein, the mold having projections on a bottom of the cavity; (b) putting a bag-shaped outer skin member into the cavity, the skin member being thermally plastic; (c) putting an upper mold on the lower mold to close the cavity, the upper mold having an aperture formed therethrough; (d) projecting a press member into the cavity through the aperture, the press member having at its work head recesses which are shaped to match with the projections of the lower mold; (e) pressing the recessed work head of the press member against the projections of the lower mold with an interposal of a part of the outer skin member therebetween; (f) heating the work head of the press member thereby to soften the part of the outer skin member; (g) separating the work head of the press member away from the projections of the lower mold; and (h) pouring a liquid material for foamed plastic into the cavi
    Type: Grant
    Filed: May 26, 1988
    Date of Patent: December 12, 1989
    Assignee: Ikeda Bussan Co., Ltd.
    Inventors: Takashi Sugiura, Ichiro Matsuura, Fumio Miyauchi, Toyoharu Chiyoshi
  • Patent number: 4861462
    Abstract: A screen unit for a screening machine comprises a screen layer which is bonded to a screen frame spanning an opening thereof. The screen layer is uniformly heated before such bonding is effected so that cooling after bonding generates a tension in the screen layer to allow it to have a trampoline or drumhead vibratile action. The tension is maintained by a reinforcing frame embedded in the frame body.
    Type: Grant
    Filed: September 11, 1987
    Date of Patent: August 29, 1989
    Assignee: Hein, Lehmann AG
    Inventors: Wolfgang Lehmann, Christian Neukam
  • Patent number: 4849145
    Abstract: For the production of articles comprising at least one layer of leather or simulated leather material and one layer of a synthetic resin connected to the first-mentioned layer in a shape-mating fashion, a mold cavity is filled with at least one layer of leather or a simulated leather material which later is in contact with at least one of the mold walls, and thereafter a synthetic resin, in the fluid condition or in a condition wherein it is rendered fluid, is introduced into the mold cavity. Finally, the synthetic resin is allowed to penetrate at least partially into the layer of leather or simulated leather material for the purpose of attaining an at least shape-mating bond therewith, and the peripheral edges of the layer of leather or simulated leather material are allowed to be covered by the synthetic resin.
    Type: Grant
    Filed: February 24, 1988
    Date of Patent: July 18, 1989
    Inventor: Hermann Hirsch
  • Patent number: 4842799
    Abstract: A method of applying end stop members by injection molding to a slide fastener having rows of coupling elements on opposed stringer tape edges, a predetermined length of each of these tape edges being held upright or substantially vertical to the plane of the tape web and embraced by end stops molded in place with that predetermined length of tape edges maintaining alignment with its neighboring contiguous tape edge outside the molded end stop.
    Type: Grant
    Filed: April 6, 1987
    Date of Patent: June 27, 1989
    Assignee: Yoshida Kogyo K. K.
    Inventor: Masahiro Kusayama
  • Patent number: 4818457
    Abstract: A method of making a mold used in a pressure slip casting process, including the steps of: preparing at least two porous bodies each defining a filter layer having a plurality of channels formed therein for allowing water and air to flow therethrough; placing a reinforcing iron frame and one of the porous bodies on a bottom board with a parting agent applied to its surface; applying a sealing resin to the surface of the other porous body opposite to a molding surface thereof and to a portion of the surface of the bottom board between the box and the porous body; filling up the space between one of the porous bodies and the reinforcing iron frame with a filler; and preparing a second part of the pressure mold.
    Type: Grant
    Filed: July 24, 1987
    Date of Patent: April 4, 1989
    Assignee: Toto Ltd.
    Inventors: Haruyuki Ito, Akio Matsumoto
  • Patent number: 4804805
    Abstract: Solder in a connection is kept from melting when applying an outer protective layer of high melting point plastic by first applying an inner layer of low melting point plastic.
    Type: Grant
    Filed: December 21, 1987
    Date of Patent: February 14, 1989
    Assignee: Therm-O-Disc, Incorporated
    Inventors: Adamantios Antonas, Kenneth C. Day
  • Patent number: 4793881
    Abstract: A method of manufacturing a fabric-covered article, preferably a belt buckle, and a method for trimming the excess fabric and backing sheet material from a fabric-covered article. Apparatus for manufacturing the fabric-covered article, preferably a belt buckle and for trimming the excess fabric material after the fabric has been glued to the backing sheet, with a buckle-shaped insert sandwiched therebetween.
    Type: Grant
    Filed: October 23, 1987
    Date of Patent: December 27, 1988
    Inventor: Richard Fink
  • Patent number: 4789416
    Abstract: A method of manufacturing a preform from uncured multiple laminates of resins impregnated fiber reinforced composite material is proposed. The preform has irregular shape such that at least one edge of any transverse cross-section of the preform varies along its length with respect to a reference co-ordinate set of axes, and further such that the cross sectional area of every cross section of the preform along the length of the preform is predetermined. A layup is formed to a length substantially equal to that of the preform from uncured multiple laminates of resin impregnated fiber reinforced composite material to have a regular shape such that no edge of any transverse cross-section varies along its length with respect to the reference co-ordinate set of axes. The cross-sectional area of every transverse cross-section of the layup along its length is substantially equal to a predetermined corresponding cross-section of the preform.
    Type: Grant
    Filed: January 19, 1983
    Date of Patent: December 6, 1988
    Assignee: The Boeing Company
    Inventor: Robert J. Ford
  • Patent number: 4776994
    Abstract: A carbonizable body is formed by infusing a plurality of preoxidized, preferably stabilized by known processing to have about 17 to 30 weight percent oxygen, fibers prepared from pitch, in a non-polar liquid plasticizer, typically quinoline, capable of extracting a tarry leachate from the fibers. The infusion of the fibers in the plasticizer is continued for a sufficient time for a substantial amount of leachate to form on the surface of the fibers. The treated fibers are then consolidated or diffusion-bonded to one another or other fibers, as by orienting the treated fibers in a mold and subjecting them to isostatic pressing at relatively low temperatures and pressure. Further processing of the consolidated fibers with appropriate heat treatment in an inert atmosphere will produce a carbonized bulk product with higher values of Young's modulus for the carbonized material than have been previously achieved at such carbonization temperatures.
    Type: Grant
    Filed: August 22, 1986
    Date of Patent: October 11, 1988
    Assignee: Fiber Materials, Inc.
    Inventors: Daniel C. Nelson, Roger T. Pepper
  • Patent number: 4776995
    Abstract: A carbonizable body is formed by infusing a plurality of preoxidized, preferably stabilized by known processing to have about 9 to 14 weight percent oxygen, polyacrylonitrile fibers in a polar liquid plasticizer, preferably water, capable of extracting a tarry leachate from the fibers. The infusion of the fibers in the plasticizer is continued for a sufficient time for a substantial amount of leachate to form on the surface of the fibers, and are then consolidated or diffusion-bonded to one another or other fibers, as by orienting the treated fibers in a mold and subjecting them to isostatic pressing at relatively low temperatures and pressure. Further processing of the consolidated fibers with appropriate heat treatment in an inert atmosphere will produce a carbonized bulk product with higher values of Young's modulus for the carbonized material than have been previously achieved at such carbonization temperatures.
    Type: Grant
    Filed: August 22, 1986
    Date of Patent: October 11, 1988
    Assignee: Fiber Materials, Inc.
    Inventors: Daniel C. Nelson, Roger T. Pepper
  • Patent number: 4769195
    Abstract: A method for manufacturing a silicon carbide fiber reinforced glass composite, which comprises either dipping silicon carbide fibers in molten glass in a tank, the molten glass being given wave vibration of 10-30 KHz by a supersonic vibrator provided with a cooling means to unravel the silicon carbide fibers and have the molten glass permeated therebetween, or plasma melt ejecting glass powder onto silicon carbide fibers to obtain a silicon carbide fiber/glass preform, molding the preform into a predetermined form and then subjecting the molded preform to thermal molding thereby to manufacture the silicon carbide fiber reinforced glass composite in the form of a molding.
    Type: Grant
    Filed: July 22, 1987
    Date of Patent: September 6, 1988
    Assignee: Nippon Carbon Co. Ltd.
    Inventors: Toshikatsu Ishikawa, Haruo Teranishi, Hiroshi Ichikawa, Yoshikazu Imai, Masanobu Umezawa
  • Patent number: 4740345
    Abstract: In production of a composite type iron golf club head having a FRP (fiber reinforced plastic) backing in a rear recess, a peripheral flange to be caught by the main body is formed on the FRP backing by providing a bottom peripheral groove in the rear recess for fortified bonding of the FRP backing to the main body.
    Type: Grant
    Filed: October 20, 1986
    Date of Patent: April 26, 1988
    Assignee: Nippon Gakki Seizo Kabushiki Kaisha
    Inventors: Yoichi Nagasaki, Toyohiko Tadokoro, Tatsuo Nakanishi, Masaki Fujimura
  • Patent number: 4736510
    Abstract: A process of producing a resilient coupling in a clearance space between two, relatively-movable elements with a polymeric material introduces the polymeric material contactingly into a clearance space between the elements. A portion of the polymeric material is softened at least while in contact with the clearance-space surface for adhesion when solidified thereafter into a resilient body for the coupling, but a portion of the clearance-space surface is arranged to prevent adhesion. The combination provides coupling with guidance of the relative motion.
    Type: Grant
    Filed: December 10, 1986
    Date of Patent: April 12, 1988
    Assignee: Firma Carl Freudenberg
    Inventors: Benno M. Jorg, Klaus Kurr, Georg Schafer, Heinz Seifert
  • Patent number: 4719065
    Abstract: A method for bonding silicone rubber to a metal member is shown in which the metal member is first treated by heating the metal member to a temperature and for a time sufficient to form an oxide layer on the outer surface of the metal member. The treated metal member is then contacted with an uncured silicone rubber composition, and the silicone rubber composition is cured to bond the treated metal member to the silicone rubber composition.
    Type: Grant
    Filed: February 25, 1987
    Date of Patent: January 12, 1988
    Assignee: JMK International, Inc.
    Inventor: Robert M. Gibbon
  • Patent number: 4714576
    Abstract: A method of making a pole and coil assembly for a dynamo-electric machine (e.g., interpole for locomotive traction motors) comprising providing the coil wires with a polyphenylene sulfide coating, filling the pole-coil interspace with solid, foamable polyphenylene sulfide ground insulation and heating the assembly such as to foam the ground insulation in place and cause it to constrictively engage and bond to the pole as well as fuse to the PPS coating on the coil. The pole surface may be roughened and/or coated with PPS for improved pole retention and/or may be nickel plated for improved corrosion resistance.
    Type: Grant
    Filed: June 2, 1986
    Date of Patent: December 22, 1987
    Assignee: General Motors Corporation
    Inventors: Dale L. Cotton, Frank J. Nachman
  • Patent number: 4704176
    Abstract: A method of preparing a composite of polyurethane bonded to the surface of a cured rubber substrate and the resulting composite. The method is comprised of first applying to a cleaned, cured rubber surface a coating of methylmethacrylate-natural rubber graft polymer and then applying a liquid polyurethane reaction mixture which is cured to form the resultant composite. The invention is particularly directed to the preparation of a tire comprised of a polyurethane carcass applied to a cured rubber tread and to a tire comprised of a polyurethane tread applied to a cured rubber carcass.
    Type: Grant
    Filed: July 23, 1986
    Date of Patent: November 3, 1987
    Assignee: The Goodyear Tire & Rubber Company
    Inventor: Thomas J. Botzman
  • Patent number: 4695420
    Abstract: A method of forming a windowed unitary panel having a peripheral edge portion of a windowpane of glazing integrally embedded within a frame of high modulus plastic material includes heating the pane to a preselected temperature prior to its being positioned within a mold. The peripheral edge portion of the windowpane protrudes into the mold cavity so that the high modulus plastic material forming the frame encapsulates the peripheral edge portion. This prevents buckling of the windowpane since the preheated windowpane contracts simultaneously with the contraction of the rigid frame as it cools from the molding temperature to ambient.
    Type: Grant
    Filed: August 12, 1985
    Date of Patent: September 22, 1987
    Assignee: Caterpillar Inc.
    Inventors: Charles E. Grawey, Scot L. Winters