Patents Represented by Attorney Robert F. Rywalski
  • 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
  • Patent number: 5860255
    Abstract: An anti-fracture, water-resistant, masonry-bondable membrane comprises a laminate having a core generally containing at least two plies of a flexible material bonded together by a flexible adhesive such as a plastisol, and a non-woven fiber layer physically bonded directly to at least one side of the core. The plastisol is a liquid composition which contains small sized resin particles such as polyvinyl chloride dispersed within a plasticizer. The core has good low as well as high temperature peel strength. The non-woven fiber layer is physically bonded to the flexible core by heat and pressure to produce a laminate wherein the non-woven fibers are partially embedded within the flexible material. The flexible membrane or laminate when utilized between and bonded to an exterior masonry article such as ceramic tile and to a substrate such as concrete, is very effective in preventing any cracks from propagating from the substrate to the article.
    Type: Grant
    Filed: May 9, 1996
    Date of Patent: January 19, 1999
    Assignee: GenCorp Inc.
    Inventors: David L. Fishel, Terry M. DiGiglia
  • Patent number: 5830390
    Abstract: A method and apparatus for a nonsynchronous system for continuously molding articles from a material cured by the control of temperature and pressure. The apparatus includes a multi-section self-clamping mold, a controller system, a material injector, a transfer system, a curing apparatus for curing the articles, and a mold separator-assembler. The method comprises pre-treating and then assembling the mold in a clamped condition. Under the control of the controller system, the mold is then injected with material from the injector, and moved by the transfer system through the curing apparatus to cure the material within the mold. Once cured, the controller system moves the mold to the mold separator-assembler via the transfer system. The mold is then disassembled into sections, the molded article is removed, and the sections are pre-treated and reassembled, for the next injection operation.
    Type: Grant
    Filed: April 30, 1992
    Date of Patent: November 3, 1998
    Assignee: Gencorp Inc.
    Inventors: Robert L. Brown, Michael K. Parrent, David E. Baxter
  • Patent number: 5824610
    Abstract: A nonwoven fabric of chemically bonded non-cellulose fibers having improved wet tensile properties. The fabric includes a random arrangement of non-cellulose fibers and an essentially formaldehyde free latex binder. The latex binder contains at least about 6.7 wt % vinyl cyanide monomer to bond the non-cellulose fibers and form a nonwoven fabric having at least a 10% improvement in wet tensile strength over a comparable nonwoven fabric having a latex binder essentially free of formaldehyde and free of vinyl cyanide monomer in the monomeric mixture.
    Type: Grant
    Filed: April 22, 1997
    Date of Patent: October 20, 1998
    Assignee: GenCorp Inc.
    Inventor: David F. Diehl
  • Patent number: 5779956
    Abstract: A molded glass run channel corner assembly formed by molding an extruded rigid division post and a flexible extruded header such that the corner assembly is capable of providing a continuous seal with contiguous corner edges of glass windows positioned on each side of the division post and a method of manufacture.
    Type: Grant
    Filed: August 16, 1996
    Date of Patent: July 14, 1998
    Assignee: GenCorp Inc.
    Inventors: Chris J. Hollingshead, Eric E. Gardner
  • Patent number: 5777053
    Abstract: An in-mold coating composition for a fiber reinforced plastic comprises an aliphatic resin such as a saturated aliphatic ester intermediate polyurethane having terminal acrylate end groups, a saturated (cyclo)aliphatic (meth)acrylate such as isobornyl acrylate, a hydroxyl alkyl (meth)acrylate, a polyacrylate ester of an alkylene polyol, and a vinyl substituted aromatic. The in-mold coating compositions have good end use weather-resistant properties so that there is no need for a subsequent paint coat thereon which heretofore has been required. The paint-free coating compositions can be either clear or pigmented and can contain various additives such as lubricants, adhesion aids, hardeners, and the like.
    Type: Grant
    Filed: January 17, 1997
    Date of Patent: July 7, 1998
    Assignee: GenCorp Inc.
    Inventors: Douglas S. McBain, David S. Cobbledick, Henry Shanoski, Brian J. Sullivan
  • Patent number: 5772816
    Abstract: A reinforced tape strip for securing a membrane roof to a roof deck or a parapet wall of a roof deck. The reinforced tape strip includes a layer of a single ply reinforcement material, at least one adhesive layer of a uniform thickness bonded to the single ply reinforcement material, and a protective layer covering the adhesive layer.
    Type: Grant
    Filed: May 24, 1995
    Date of Patent: June 30, 1998
    Assignee: GenCorp Inc.
    Inventor: Michael J. Hubbard
  • Patent number: 5772822
    Abstract: A method of manufacturing a glass panel and gasket assembly includes providing a glass panel and a mold defining a correspondingly shaped mold cavity to create a gasket for disposition about the periphery of the glass panel, filling the mold with a gasket material, allowing the gasket material to partially cure, removing the gasket from the mold and installing the gasket on the glass panel, allowing the gasket to continue to cool, shrink and cross-link so that the gasket is in tension and therefore intimately and tightly retained about the periphery of the glass. Metal shaping and reinforcing strips may also be molded into the gasket.
    Type: Grant
    Filed: March 14, 1996
    Date of Patent: June 30, 1998
    Assignee: GenCorp Inc.
    Inventor: Ronald E. Dupuy
  • Patent number: 5770303
    Abstract: A latex binder composition comprises occluded composite particles containing at least a vinyl ester homopolymer or a copolymer thereof polymerized from acrylate and/or ethylene monomers, and a polymer polymerized from conjugated diene and/or vinyl substituted aromatic monomers and desirably unsaturated carboxylic acid monomers. The occluded composite particles are produced in the absence of crosslinking agents by first polymerizing the vinyl esters and optional acrylate and/or ethylene monomers, and subsequently in situ polymerizing the conjugated diene and/or vinyl substituted aromatic, etc., monomers in the presence of the vinyl ester latex particles. The occluded composite-particle latex contains phase separated domains which are neither a core-shell nor an inverted core-shell particle and provide properties which are superior to physical blends of the two classes of polymers when utilized as binders in paper coating formulations.
    Type: Grant
    Filed: January 5, 1996
    Date of Patent: June 23, 1998
    Assignee: GenCorp Inc.
    Inventors: Raymond J. Weinert, Satish C. Sharma, John P. Kovalchin, David M. Lee, Nick G. Triantafillopoulos, Ira John Westerman
  • Patent number: 5746867
    Abstract: A process for forming a glass run channel composite having a thin film of ultra high molecular weight polyethylene as a sealing contact surface and an elastomeric rubber as a substrate by film transfer rubber molding and the product formed thereby
    Type: Grant
    Filed: September 30, 1996
    Date of Patent: May 5, 1998
    Assignee: GenCorp Inc.
    Inventors: Kohji Y. Chihara, James A. Roth, Gary A. Krotke
  • Patent number: 5741393
    Abstract: An adhesive composition using as the primary binder an emulsion of butadiene-vinylidene chloride copolymer is disclosed. The composition is particularly suited for binding rubber to metal in a variety of uses such as vibration damping devices. The adhesive composition has resistance to hot water and or water glycol solutions.
    Type: Grant
    Filed: September 28, 1995
    Date of Patent: April 21, 1998
    Assignee: GenCorp Inc.
    Inventors: I. Glen Hargis, Richard A. Miranda, John A. Wilson
  • Patent number: 5726259
    Abstract: A bimodal latex having high printing strength, reduced residue and a controlled polymer gel content which can be utilized for paper coating compositions and to a process for making the bimodal latex. The high strength bimodal latex, prepared by emulsion polymerization, includes in polymerized form open chain conjugated diene monomer, alkenyl aromatic monomer and at least one ethylenically unsaturated monomer selected from the group consisting of ethylenically unsaturated carboxylic acid and derivatives thereof.
    Type: Grant
    Filed: July 12, 1996
    Date of Patent: March 10, 1998
    Assignee: GenCorp Inc.
    Inventors: Peter C. Hayes, Nick Triantafillopoulos
  • Patent number: 5721309
    Abstract: A water based coating composition provides a stain resistant layer which adheres well to a substrate and is resistant to chemical attack by common household cleaning solvents such as isopropyl alcohol. The coating composition has a very low volatile organic compound content, thus providing an environmentally desirable alternative to organic solvent based coatings. The low volatile organic compound content of the composition substantially or completely eliminates the problems and expenses associated with solvent recovery for meeting chemical emission standards, and the potential for human exposure to solvent vapor is substantially eliminated or significantly reduced. The coating composition is aqueous based and incorporates a crosslinkable acrylic polymer latex, an amino resin crosslinking agent and a crosslinking catalyst. The polymer, crosslinking agent and catalyst are dispersed and/or solubilized in an aqueous medium.
    Type: Grant
    Filed: September 19, 1996
    Date of Patent: February 24, 1998
    Assignee: GenCorp Inc.
    Inventors: Satish C. Sharma, John P. Kovalchin, Raymond J. Weinert
  • Patent number: 5693732
    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: January 8, 1996
    Date of Patent: December 2, 1997
    Assignee: GenCorp. Inc.
    Inventors: Satish C. Sharma, Charles M. Kausch, Ronald D. Mohan, Raymond J. Weinert
  • Patent number: 5681408
    Abstract: A moisture-permeable acoustic lamina which is usable as a wall covering has a foraminous woven fabric layer adhered to a fabric backing by a discontinuous thermoplastic polymer layer. The woven fabric preferably has an embossed undulate outer surface to enhance the acoustic properties of the lamina and to impart an aesthetic textural appearance. The individual yarns of the woven fabric are preferably substantially uniformly coated with a polyvinyl chloride plastisol to impart stain and wear-resistance, inhibit the growth of molds, fungi, bacteria and the like, and to enhance the appearance of the exposed face of the lamina. The moisture-permeable lamina structure allows wall covering paste, used to adhere the lamina to a wall, to dry at an acceptable rate, yet does not allow paste to bleed through the foraminous woven fabric layer.
    Type: Grant
    Filed: June 26, 1996
    Date of Patent: October 28, 1997
    Assignee: GenCorp Inc.
    Inventors: Joseph L. Pate, David L. Fishel
  • Patent number: 5674567
    Abstract: A primerless, one-part, heat curable, low volatile organic compound, polyurethane composition comprises a blocked polyurethane prepolymer made from a liquid hydroxyl terminated intermediate and an excess of a polyisocyanate, a curing agent, silicone and/or low friction polymer and optional fillers. Upon cure of the polyurethane composition, the silicone oil and/or low friction polymer generally imparts low friction and high abrasive resistant properties. A desired use is as a glass run channel coating.
    Type: Grant
    Filed: November 2, 1995
    Date of Patent: October 7, 1997
    Assignee: GenCorp Inc.
    Inventors: Charles M. Kausch, Earl G. Melby, Satish C. Sharma