Patents Assigned to GenCorp Inc.
  • Patent number: 5635274
    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: June 21, 1994
    Date of Patent: June 3, 1997
    Assignee: GenCorp Inc.
    Inventors: Kohji Y. Chihara, James A. Roth, Gary A. Krotke
  • Patent number: 5632844
    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: May 27, 1994
    Date of Patent: May 27, 1997
    Assignee: GenCorp Inc.
    Inventors: Joseph L. Pate, David L. Fishel
  • Patent number: 5629047
    Abstract: A latex useful as a binder for paper, nonwovens, and textiles is prepared by copolymerizing in aqueous emulsion using a redox initiator at 5.degree. C. a mixture of 35 to 60% weight of a conjugated diene monomer and from about 30 to 65% by weight of a vinyl aryl monomer. Additional improvements can be obtained by incorporating in the mixture a small percentage by weight of copolymerizable monomers such as acrylic acid, methacrylic acid, itaconic acid and/or a functional type monomer having an activatable methyl, ethyl, propyl or butyl ester group and a vinyl group.
    Type: Grant
    Filed: August 6, 1990
    Date of Patent: May 13, 1997
    Assignee: GenCorp Inc.
    Inventors: Satish C. Sharma, Amiya K. Chatterjee, Ronald D. Mohan, Friedhold Schon
  • Patent number: 5626383
    Abstract: A weatherstrip seal comprises a carrier structure without embedded reinforcement that has an attached weather-sealing structure extending therefrom. The carrier structure has two spaced-apart legs connected by a base, the interior walls of the legs forming a channel therebetween. Finger-like members extending from the walls are adapted to frictionally engage and hold a mounting flange inserted into the channel. The legs decrease in thickness as they proceed outwardly from the base and their walls converge inwardly toward each other, minimizing the material required for fabrication of the carrier and enhancing its ability to withstand forces acting to dislodge the mounting flange from the channel, especially at corners thereof.
    Type: Grant
    Filed: December 28, 1994
    Date of Patent: May 6, 1997
    Assignee: GenCorp Inc.
    Inventors: Ching-Chih Lee, Richard A. Miranda, James F. Stevenson
  • Patent number: 5623015
    Abstract: A latex binder composition which is the reaction product of a conjugated diene monomer and a vinyl-substituted aromatic monomer along with minor amounts of other comonomers including acrylamide or a derivative thereof, methacrylic acid, N-methylolacrylamide, and optional unsaturated carboxylic acids, has an average particle size of less than 1,500 .ANG.. The latex binder which has good stability can be used on nonwoven cellulosic based substrates to impart high wet tensile strength thereto.
    Type: Grant
    Filed: April 4, 1996
    Date of Patent: April 22, 1997
    Assignee: GenCorp Inc.
    Inventors: David F. Diehl, Peter C. Hayes
  • Patent number: 5622736
    Abstract: An apparatus 10 for removing a mold section C from a molded part M. The apparatus 10 includes a base frame 11 supporting a driver 12 and a power supply, and a support member 16 for engagement with the molded part M. The driver 12 is engaged with and driven by the power supply M. The support member 16 has a clamping station for receiving and clamping the mold section C engaged with the molded part M. The clamping station 20 also has an open position for receiving the mold section C engaged with the molded part, and a closed position in which the mold section and molded part are clamped within the clamping station. The clamping station 20 further includes a heater 44, to assist with partial heating of the molded part M and mold section C prior to removal of the molded part.
    Type: Grant
    Filed: July 29, 1994
    Date of Patent: April 22, 1997
    Assignee: GenCorp Inc.
    Inventors: Robert L. Brown, Todd A. England, Daniel L. Goodell, David E. Baxter, deceased
  • Patent number: 5622008
    Abstract: An extruded weatherstrip of an elastomeric material formed by the polymerization of ethylene propylene and diene monomers capable of adapting to the surface contour of a retention flange. The weatherstrip includes a foot of pliable uncured elastomeric material and a seal member of cured elastomeric material formed integral with said uncured foot. The seal member has a retention member which forces the foot within imperfections and variations in the retention flange to provide a weather resistant seal with the retention flange.
    Type: Grant
    Filed: January 12, 1995
    Date of Patent: April 22, 1997
    Assignee: GenCorp Inc.
    Inventor: S. Brian King
  • Patent number: 5614581
    Abstract: A thermosetting in-mold coating for molded fiber-reinforced plastic parts is disclosed. The binder for the thermosetting coating is comprised of least one polymerizable epoxy-based oligomer having at least two acrylate groups and at least one copolymerizable ethylenically unsaturated monomer. The coating includes graphite and titanium dioxide which results in the gray color. The coating composition has good flow and coverage during molding, good adhesion, uniform color, good surface quality, and good paintability. The coating composition includes enough carbon black so that a 1.0 mil thick coating has a Ransburg conductivity meter reading of at least 165 units.
    Type: Grant
    Filed: October 18, 1995
    Date of Patent: March 25, 1997
    Assignee: GenCorp Inc.
    Inventors: David S. Cobbledick, Donald F. Reichenbach
  • Patent number: 5614052
    Abstract: The present invention relates to a method of splicing a hollow gasket such that the final welded joint remains highly flexible and does not impair the fluid flow between the two spliced sections. The two gasket sections having identical multiple-chambered cross-sections are held in a splice mold by precision tooling and air drawn through small holes in the splice mold by a vacuum pump. Heat is applied to each end of the gasket sections and the ends are brought into contact with one another. As the ends cool, a welded joint is formed. The integrity of each individual chamber is maintained so that, when spliced, the two gaskets sections become one, with the chambers forming continuous channels. The continuous channels create a higher insulating quality than if the channels were blocked at the welded joints. Further, corners spliced in this manner remain as flexible as the adjoining gasket sections.
    Type: Grant
    Filed: December 21, 1994
    Date of Patent: March 25, 1997
    Assignee: GenCorp Inc.
    Inventor: Michael J. Fisher
  • Patent number: 5609275
    Abstract: A metering apparatus 10 for continuously supplying a specified amount of fluid material F to a desired surface. The apparatus 10 includes a reservoir 14 for maintaining a supply of fluid material, a housing 16 having a central bore 22 therethrough, a receiving opening 24 for receiving fluid material from the reservoir 14 to central bore 22, and an exit opening 26 through which fluid material exits the housing 16. A rotatable screw member 28 is provided engaged through the housing 16 within said central bore 22, and a driver 37 engaged with the screw member for rotating the screw member within the bore at between approximately 1 rpm to 2,700 rpm, and preferably approximately 1,750 rpm, in order to continuously supply fluid to the exit opening 26. At this operating level, fluid material is provided from the exit opening 26 at a flow rate of between approximately 1 to 23 grams/min, and in a thickness of approximately 0.001 to 8 mils.
    Type: Grant
    Filed: April 14, 1995
    Date of Patent: March 11, 1997
    Assignee: GenCorp Inc.
    Inventors: Robert L. Brown, William H. Miller, David E. Baxter
  • Patent number: 5606828
    Abstract: A magnetic door gasket (10) having a central web (18) and three enclosed chambers (12, 14, 16) projecting from a first side of the web, and a U-shaped recess (20) formed by the web and a leg (22) spaced from the opposed side of the web and joined thereto by a bight (26). The leg has a U-shaped projection (24) projecting therefrom partly to the web, the projection being spaced from the bight. The projection has a nib (28) projecting obliquely from a closed end (30) toward the web and the bight. The gasket is formed from a resilient material, such as PVC, by extrusion.
    Type: Grant
    Filed: March 14, 1995
    Date of Patent: March 4, 1997
    Assignee: GenCorp Inc.
    Inventors: Glenn Hall, Merl E. Brown
  • Patent number: 5606003
    Abstract: A two-component urethane adhesive is disclosed which requires no primer or pretreatment of the substrate. The adhesive in cured form has superior paint adhesion and can withstand high temperature bake cycles without substantial losses in adhesion to the substrate. The adhesive differs from prior adhesives in that essentially all of the high molecular weight polyols in the prepolymer component are the reaction product grafting reactions of acrylonitrile onto polypropylene polyols.
    Type: Grant
    Filed: September 1, 1994
    Date of Patent: February 25, 1997
    Assignee: GenCorp Inc.
    Inventors: Chia L. Wang, Arden E. Schmucker, Fred V. Sandels, Richard H. Harshbarger, Robert L. Spencer
  • Patent number: 5595625
    Abstract: An anti-fracture, water-resistant, masonry-bondable membrane comprises a lamina having a central layer generally containing at least one ply of a flexible material, e.g., an organic polymer such as polyvinyl chloride, generally in the form of a sheet, and a nonwoven fiber layer physically bonded to each side thereof. The formation of the lamina is generally accomplished by laminating a single, nonwoven layer to a layer or sheet of a flexible material in the presence of heat and pressure to produce a construction wherein the nonwoven fibers are partially embedded in the flexible material. Subsequently, two such constructions are bonded together under heat and pressure to produce essentially a four-ply lamina wherein the layers of flexible material such as a polymer are fused to one another.
    Type: Grant
    Filed: August 22, 1995
    Date of Patent: January 21, 1997
    Assignee: GenCorp Inc.
    Inventors: David L. Fishel, Terry M. Digiglia
  • Patent number: 5593748
    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: December 12, 1994
    Date of Patent: January 14, 1997
    Assignee: GenCorp Inc.
    Inventor: Michael J. Hubbard
  • Patent number: 5593157
    Abstract: Low air permeable, pressurized articles such as play balls, e.g., a tennis ball, have a thin barrier layer formed on the vulcanized rubber core. The barrier layer is chemically bonded to the internal and/or external surface of the core, e.g., by the reaction of a Lewis acid, e.g., sulfur trioxide, with the core rubber. The thin barrier layer permits the tennis ball to be flexible and have good rebound life and yet extends the play life thereof before ball rebound or softness changes to undesired levels.
    Type: Grant
    Filed: May 10, 1995
    Date of Patent: January 14, 1997
    Assignee: GenCorp Inc.
    Inventors: William J. Koros, I. G. Hargis, Richard A. Olson, Jason S. Harris
  • Patent number: 5594061
    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: March 11, 1994
    Date of Patent: January 14, 1997
    Assignee: GenCorp Inc.
    Inventors: Satish C. Sharma, John P. Kovalchin, Raymond J. Weinert
  • Patent number: 5589532
    Abstract: Disclosed is a water-based adhesive with enhanced effectiveness for bonding metal and rubber substrates for uses such as vibration damping devices. The adhesive is formulated from a latex which includes at least one conjugated diene and a macromonomer containing at least two ethylene oxide repeat units.
    Type: Grant
    Filed: May 15, 1995
    Date of Patent: December 31, 1996
    Assignee: GenCorp Inc.
    Inventors: I. Glen Hargis, John P. Kovalchin, Satish C. Sharma, Raymond J. Weinert, John A. Wilson
  • Patent number: 5582895
    Abstract: A combined glassrun, greenhouse trim (10) for the window opening of an automotive vehicle comprising an extruded or co-extruded, polymeric glassrun (12) and a greenhouse trim (14). The greenhouse trim (14) is injection molded from a polymeric material against a surface of a flange portion (22) of the glassrun (12). The organic materials selected for the glassrun (12) and the greenhouse trim (14) are such that the greenhouse trim (14) is adhesively joined to the glassrun (12) during the injection molding of the greenhouse trim (14).
    Type: Grant
    Filed: July 19, 1995
    Date of Patent: December 10, 1996
    Assignee: GenCorp Inc.
    Inventors: Ronald E. Dupuy, Keith E. Wilson, Walter D. Hunnicut, Wayne A. Smith
  • Patent number: 5566510
    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: October 26, 1994
    Date of Patent: October 22, 1996
    Assignee: GenCorp Inc.
    Inventors: Chris J. Hollingshead, Eric E. Gardner
  • Patent number: 5562875
    Abstract: An assembly and method for processing extrudate material containing curves or angles into a predetermined overall configuration, including having a die assembly for an extruder which assembly controls the cross-sectional shape or profile of the extrudate and selectively varies the path of the extrudate as it leaves the die assembly. A support member is provided which has a predetermined overall configuration and profile to receive the extrudate and maintain its configuration. A driving apparatus is also provided for continuously driving either the support member or the die assembly relative to the other while the extrudate is being received in the support member, and until the entire predetermined overall configuration has been completed. The path of the extrudate is variably directed by the die assembly as it leaves the extruder in coordination with the relative speeds involved to conform the extrudate configuration to the predetermined overall configuration of the support member.
    Type: Grant
    Filed: June 13, 1991
    Date of Patent: October 8, 1996
    Assignee: GenCorp Inc.
    Inventors: William H. Miller, James F. Stevenson