Patents Assigned to GenCorp Inc.
  • Patent number: 7171785
    Abstract: A two piece outer belt weatherstrip provides a seal between the upper portion of a door and the lower portion a window. The weatherstrip comprises two individual components: a cover and a body. The cover is generally T-shaped and includes a curved outer surface that is visible when assembled and installed and a centrally disposed web. The body is a complex generally S-shaped member having adjacent parallel slots opening in opposite directions. One slot receives the web of the cover and the other receives a vertical flange of the vehicle door and secures the weatherstrip thereon. An S-shaped metal reinforcing member resides with the body and a pair of wiper flanges extending from one face of the body engage the window glass and seal thereagainst. These components are preferably extruded but may be molded depending, inter alia, upon the configurations of their terminal portions.
    Type: Grant
    Filed: November 21, 2000
    Date of Patent: February 6, 2007
    Assignee: GenCorp, Inc.
    Inventors: Walter J. Kelly, Anthony W. Loe, Christopher L. Kesh
  • Patent number: 7152374
    Abstract: A composite extrusion for an automotive seal strip is formed of an extruded body, and a veneer extruded onto the body. The extruded body is composed of ethylene-propylene diene rubber compound. The veneer is composed of a polymer blend that includes the reaction product of an acrylate polymer and a glycidyl acrylate polymer. The reaction of the acrylate polymer and the glycidyl acrylate polymer improves adhesion and also provides a barrier to inhibit migration of vulcanizing agents from the ethylene-propylene diene rubber body into the veneer that would otherwise cause discoloration during use.
    Type: Grant
    Filed: October 21, 2003
    Date of Patent: December 26, 2006
    Assignee: GenCorp Inc.
    Inventor: Krishnamachari Gopalan
  • Patent number: 6982112
    Abstract: A novel laminate useful for seals particularly for vehicle window seals that are flexible, wear resistant and have a low coefficient of friction, is provided. The laminate comprises a rubber substrate and a polyolefin coating disposed on and adherent to the rubber substrate. The invention also provides novel methods of making laminates, particularly seals. Such method comprises the following steps: providing a rubber substrate; then applying a powdered crystalline polyolefin to the rubber substrate, in an amount sufficient to form a continuous layer when melted; and then melting the powdered crystalline polyolefin to form a continuous polyolefin coating disposed on, and adherent to, the rubber substrate. The invention also relates to seals comprising: an polyolefin rubber body; and a continuous coating of fused polyolefin disposed on and adherent to the rubber seal. Preferably the continuous coating of fused polyolefin is disposed in the glass run channel in the rubber body.
    Type: Grant
    Filed: July 3, 2002
    Date of Patent: January 3, 2006
    Assignee: GenCorp, Inc.
    Inventor: Aubert Y. Coran
  • Patent number: 6440492
    Abstract: A laminate useful for seals particularly for vehicle window seals that are flexible, wear resistant and have a low coefficient of friction, is provided. The laminate has a rubber substrate and a polyolefin coating disposed on and adherent to the rubber substrate. The invention also provides methods of making laminates, particularly seals. Such method includes the steps of providing a rubber substrate; then applying a powdered crystalline polyolefin to the rubber substrate, in an amount sufficient to form a continuous layer when melted; and then melting the powdered crystalline polyolefin to form a continuous polyolefin coating disposed on, and adherent to, the rubber substrate. The invention also relates to seals comprising: an polyolefin rubber body; and a continuous coating of fused polyolefin disposed on and adherent to the rubber seal. Preferably the continuous coating of fused polyolefin is disposed in the glass run channel in the rubber body.
    Type: Grant
    Filed: May 10, 2000
    Date of Patent: August 27, 2002
    Assignee: GenCorp, Inc.
    Inventor: Aubert Y. Coran
  • Patent number: 6402874
    Abstract: An applique article for a “B” pillar or other external surface of a vehicle is composed of integrally bonded cosmetic and functional materials. The applique article includes a thermoplastic base portion, an elastomer or thermoplastic elastomer functional sealing lip portion and a decorative covering portion applied to an exposed surface of the article. At least the functional sealing lip portion and the base portion are integrally bonded together in a mold during a process of manufacturing the article.
    Type: Grant
    Filed: July 14, 2000
    Date of Patent: June 11, 2002
    Assignee: GenCorp Inc.
    Inventor: Walter J. Kelly
  • Patent number: 6342286
    Abstract: An embossment for a plastic panel is provided. The embossment projects out from the panel and can secure the panel to an object or support the panel away from the object as a standoff. A plurality of support legs are integrally formed to both the embossment and the panel which separates the embossment from the panel and provides stability to the embossment. While attaching the embossment to the vehicle, such as by rotationally inserting a screw, the support legs prevent the embossment from rotating and/or disconnecting from the panel. In this manner, the panel is maintained in a proper location during installation. The support legs have a reduced contact area with the panel such that abnormalities on the show surface that would be created by the embossment are eliminated.
    Type: Grant
    Filed: December 13, 1999
    Date of Patent: January 29, 2002
    Assignee: GenCorp. Inc.
    Inventors: Christopher J. Hollingshead, Terry L. Farber, Rodney Hardesty
  • Patent number: 6337359
    Abstract: A latex as a binder for nonwoven applications to form a permeable sublayer of personal hygiene articles. The latex is prepared by a process including the steps of (1) polymerizing a monomer mixture comprising styrene, itaconic acid, surfactant and water soluble free radical initiator to form a seed; (2) sequentially adding equal increments of a monomer mixture of styrene, butadiene and acrylic acid to the seed under emulsion polymerization conditions to form a styrene-butadiene-acrylic acid copolymer; and then (3) neutralizing the styrene-butadiene-acrylic acid copolymer to a pH of about 4.5 to 7 to form the latex.
    Type: Grant
    Filed: August 5, 1999
    Date of Patent: January 8, 2002
    Assignee: Gencorp Inc.
    Inventors: David F. Diehl, Carla Dittman McBain
  • Patent number: 6321490
    Abstract: A mechanically interlocking belt weatherstrip for a motor vehicle. The weatherstrip is formed by three separate components: a cover, a body and a sealing lip. The weatherstrip may be made from separate, all-extruded components, or may be a made from a combination of molded and extruded components. The weatherstrip is formed by snapping the body and the cover snap together to hold the sealing lip securely in place. Because the cover can be easily interchanged with a different cover, the cover can be made to include properties, such as color and gloss, desired by a particular motor vehicle manufacturer while the remaining components remain unchanged. Thus, the weatherstrip allows versatility of the selection of the separate components to meet the individual style and functional needs of a particular motor vehicle design.
    Type: Grant
    Filed: October 1, 1997
    Date of Patent: November 27, 2001
    Assignee: GenCorp Inc.
    Inventor: James Randall Vance
  • Patent number: 6282840
    Abstract: A mechanically interlocked belt type weatherstrip provides a seal between the upper portion of a door and the lower portion a window. The weatherstrip comprises three individual components: a cover, a body and a sealing lip. These components may be either extruded or molded depending particularly upon the configurations of their terminal portions. All of the components may be one of a wide variety of black flexible plastic or elastomeric materials. However, because each of the components is separate, they can be manufactured of different materials and of different colors to provide specifically desired properties. The weatherstrip is formed by snapping the body and the cover together which holds the sealing lip securely in place between the cover and the body. The weatherstrip thus allows versatility of the selection of the separate components to meet the individual style and functional needs of a particular motor vehicle design.
    Type: Grant
    Filed: October 2, 2000
    Date of Patent: September 4, 2001
    Assignee: GenCorp Inc.
    Inventor: James Randall Vance
  • Patent number: 6128859
    Abstract: A mechanically interlocked belt type weatherstrip provides a seal between the upper portion of a door and the lower portion a window. The weatherstrip comprises three individual components: a cover, a body and a sealing lip. These components may be either extruded or molded depending particularly upon the configurations of their terminal portions. All of the components may be one of a wide variety of black flexible plastic or elastomeric materials. However, because each of the components is separate, they can be manufactured of different materials and of different colors to provide specifically desired properties. The weatherstrip is formed by snapping the body and the cover together which holds the sealing lip securely in place between the cover and the body. The weatherstrip thus allows versatility of the selection of the separate components to meet the individual style and functional needs of a particular motor vehicle design.
    Type: Grant
    Filed: December 2, 1998
    Date of Patent: October 10, 2000
    Assignee: GenCorp. Inc.
    Inventor: James Randall Vance
  • Patent number: 6106275
    Abstract: An injection press apparatus for molding/joining separate parts. The apparatus having a work table with first and second work stations for injecting material into a mold. A movable extruder/injection assembly is provided which has an extruder portion for extruding material, and an injection portion for injecting material. The extruder portion and injection portion are in fluid communication such that material is provided from the extruder portion to the injection portion prior to injection of material from the injection portion to the mold. The injection portion of extruder/injection assembly has a nozzle assembly for receiving and injecting material from the injection portion to a self-actuating mold clamp assembly at the first or second work stations. The first and second work stations support the mold clamp assembly which receives the molding material. The extruder/injection assembly is movable between the first and second work stations by a shuttle assembly.
    Type: Grant
    Filed: September 1, 1994
    Date of Patent: August 22, 2000
    Assignee: GenCorp Inc.
    Inventors: Edward F. Huff, Robert L. Brown, David E. Baxter, deceased, Gregory L. Baxter, Walter Hunnicut
  • Patent number: 6106911
    Abstract: A process and apparatus for assembling motor vehicle beltstrips or weatherstrips comprises the steps of providing a weatherstrip preform, passing such preform through a conforming die, applying a hot melt adhesive to a portion of such weatherstrip preform in such die, passing such preform and adhesive into an additional die where a thermoplastic feature is applied to said preform and secured by said hot melt adhesive. Hot melt adhesive may be applied to an additional region of said weatherstrip preform and a trim preform may then also be secured to the weatherstrip preform. The invention also includes the weatherstrip or beltstrip roduct.
    Type: Grant
    Filed: November 16, 1998
    Date of Patent: August 22, 2000
    Assignee: GenCorp. Inc.
    Inventor: Ronald E. Dupuy
  • Patent number: 6103308
    Abstract: An aqueous paper and paperboard coating composition is provided containing as a lubricant a vegetable oil triglyceride which is hydrophobic and non-ionic.
    Type: Grant
    Filed: April 23, 1998
    Date of Patent: August 15, 2000
    Assignee: GenCorp Inc.
    Inventors: William Floyd, Doug Harper, Nolan Thompson
  • Patent number: 6103168
    Abstract: An applique article for a "B" pillar or other external surface of a vehicle is composed of integrally bonded cosmetic and functional materials. The applique article includes a thermoplastic base portion, an elastomer or thermoplastic elastomer functional sealing lip portion and a decorative covering portion applied to an exposed surface of the article. At least the functional sealing lip portion and the base portion are integrally bonded together in a mold during a process of manufacturing the article.
    Type: Grant
    Filed: January 27, 1997
    Date of Patent: August 15, 2000
    Assignee: GenCorp Inc.
    Inventor: Walter J. Kelly
  • Patent number: 6070363
    Abstract: A mechanically interlocking belt weatherstrip for a motor vehicle. The weatherstrip is formed by three separate components: a cover, a body and a sealing lip. The weatherstrip may be made from separate, all-extruded components, or may be a made from a combination of molded and extruded components. The weatherstrip is formed by snapping the body and the cover snap together to hold the sealing lip securely in place. Because the cover can be easily interchanged with a different cover, the cover can be made to include properties, such as color and gloss, desired by a particular motor vehicle manufacturer while the remaining components remain unchanged. Thus, the weatherstrip allows versatility of the selection of the separate components to meet the individual style and functional needs of a particular motor vehicle design. An assembly jig and method which facilitates assembly of the cover, body and sealing lip are also disclosed.
    Type: Grant
    Filed: December 2, 1998
    Date of Patent: June 6, 2000
    Assignee: Gencorp Inc.
    Inventor: James Randall Vance
  • Patent number: 5950533
    Abstract: A web with an embossed surface with a plurality of lows separated by a plurality of highs is provided with a shadow effect by passing the web between a pair of counterrotating rollers, a backup roller for supporting the web on its reverse surface and an ink application roller for applying ink to selected portions of the embossed surface of the web. The ink application roller is formed of a hard elastomeric material and its outer surface is engraved to have a plurality of highs corresponding to and engaging the lows of the embossed surface of the web and a plurality of lows corresponding to and overlying the highs on the embossed surface of the web.
    Type: Grant
    Filed: November 10, 1997
    Date of Patent: September 14, 1999
    Assignee: GenCorp Inc.
    Inventors: Joseph S. Kildune, Hubert Perkins
  • Patent number: 5935357
    Abstract: A dual-weld heat welding apparatus capable of simultaneously welding a first membrane and an overlapping second membrane on opposite sides of a roof membrane fastening apparatus fastened through the first membrane and located under the overlapping second membrane The heat welding apparatus includes a movably supported chassis, a hot air welder attached to the chassis including a nozzle having an outlet including at least one opening for simultaneously applying a weld on opposite sides of the roof membrane fastener to weld the overlapping second membrane and the first membrane, and at least one weld wheel rotatably attached to the chassis and located rearward of the nozzle relative to the direction of movement of the apparatus and capable of simultaneously applying pressure to the weld on each side of the roof membrane fastener.
    Type: Grant
    Filed: February 20, 1997
    Date of Patent: August 10, 1999
    Assignee: GenCorp Inc.
    Inventors: Michael J. Hubbard, John Jordon
  • Patent number: 5914173
    Abstract: The invention relates to a flexible, waterproof shower pan liner comprised of a water-insoluble thermoplastic sheet. The shower pan liner includes on at least one surface selected indicia such as product information or plumbing codes at regular intervals. The indicia are embossed into the shower pan liner thereby eliminating the need for a protective top coat. In a process for making the invention, the thermoplastic is heated, calendered, and thereafter embossed with the selected indicia while in a heated condition.
    Type: Grant
    Filed: November 7, 1996
    Date of Patent: June 22, 1999
    Assignee: GenCorp Inc.
    Inventors: David L. Fishel, Peter F. Payne
  • Patent number: 5876551
    Abstract: A breathable, decorative wallcovering having a smooth, continuous, aesthetically appealing exposed surface which can be printed with a design or pattern having sharply defined edges, and having a relatively high moisture permeability, includes a porous polymeric ply fused to and supported by a nonwoven substrate ply which consists of an array of hydroentangled fibers. The porous polymeric ply is formed by thermally fusing a plastisol coating, which is applied to the nonwoven substrate ply, and which has a thickness sufficiently low to permit localized variations in fiber orientation and small variations in the thickness of the nonwoven substrate ply to cause the formation of a multiplicity of miniature discontinuities which are substantially invisible to the unaided eye and which are randomly distributed throughout the coating. The plastisol coating is, however, thick enough to allow the formation of a coating which upon thermal fusion provides a polymeric ply having a smooth continuous appearance.
    Type: Grant
    Filed: September 25, 1997
    Date of Patent: March 2, 1999
    Assignee: GenCorp Inc.
    Inventor: Dan L. Jackson
  • Patent number: 5872200
    Abstract: A paper coating formulation and a process for making a paper coating formulation having an improved strength and blister resistance including an aqueous medium having dispersed therein a functionally effective amount of a finely divided mineral filler and a latex binder containing copolymerized acid functional and amine functional monomers in each polymer molecule.
    Type: Grant
    Filed: July 31, 1997
    Date of Patent: February 16, 1999
    Assignee: GenCorp Inc.
    Inventors: Satish C. Sharma, Charles M. Kausch, Ronald D. Mohan, Raymond J. Weinert