Patents Assigned to GenCorp
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Patent number: 5746867Abstract: 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 therebyType: GrantFiled: September 30, 1996Date of Patent: May 5, 1998Assignee: GenCorp Inc.Inventors: Kohji Y. Chihara, James A. Roth, Gary A. Krotke
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Patent number: 5741393Abstract: 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: GrantFiled: September 28, 1995Date of Patent: April 21, 1998Assignee: GenCorp Inc.Inventors: I. Glen Hargis, Richard A. Miranda, John A. Wilson
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Patent number: 5726259Abstract: 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: GrantFiled: July 12, 1996Date of Patent: March 10, 1998Assignee: GenCorp Inc.Inventors: Peter C. Hayes, Nick Triantafillopoulos
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Patent number: 5721309Abstract: 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: GrantFiled: September 19, 1996Date of Patent: February 24, 1998Assignee: GenCorp Inc.Inventors: Satish C. Sharma, John P. Kovalchin, Raymond J. Weinert
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Patent number: 5693732Abstract: 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: GrantFiled: January 8, 1996Date of Patent: December 2, 1997Assignee: GenCorp. Inc.Inventors: Satish C. Sharma, Charles M. Kausch, Ronald D. Mohan, Raymond J. Weinert
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Patent number: 5681408Abstract: 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: GrantFiled: June 26, 1996Date of Patent: October 28, 1997Assignee: GenCorp Inc.Inventors: Joseph L. Pate, David L. Fishel
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Patent number: 5674951Abstract: Coating compositions are disclosed which use a polyoxetane polymer having CH.sub.2 --O---CH.sub.2 --R.sub.f side chains where R.sub.f is a highly fluorinated alkyl or polyether. The coating compositions use polyisocyanates to create isocyanate terminated polymers from the poly(oxetanes) and from various polyols from alkylene oxides or polyester polyols. These can be reacted together to form block copolymer structures or can be linked together when the coating is crosslinked. A preferred method is to use blocked isocyanate groups. Another preferred embodiment is to use the composition as a abrasion resistant coating for glass run channels.Type: GrantFiled: August 3, 1995Date of Patent: October 7, 1997Assignee: GenCorp Inc.Inventors: I. Glen Hargis, Charles M. Kausch, Russell A. Livigni, Aslam A. Malik, Earl G. Melby, Francis Jerome Vitus
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Patent number: 5674567Abstract: 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: GrantFiled: November 2, 1995Date of Patent: October 7, 1997Assignee: GenCorp Inc.Inventors: Charles M. Kausch, Earl G. Melby, Satish C. Sharma
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Patent number: 5674628Abstract: 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: GrantFiled: May 15, 1996Date of Patent: October 7, 1997Assignee: GenCorp Inc.Inventors: I. Glen Hargis, John P. Kovalchin, Satish C. Sharma, Raymond J. Weinert, John A. Wilson
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Patent number: 5671967Abstract: A sill cover article for automobiles and other vehicles which has a first, relatively rigid sill cover portion and a second, relatively flexible lower door sealing portion that is manufactured as a single component and can be attached to a vehicle in a single mounting operation. The sill cover article is preferably manufactured of two materials of different durometer which are coextruded to form a single component. The sill cover article or a portion thereof may be provided with various coatings and/or additives to provide the article with desired properties. For example, the lower door sealing portion may be provided with an ice-release agent to prevent ice from forming on a surface thereof. The sill cover article of the present invention provides a reduction in assembly time, inventory requirements and overall manufacturing costs of a vehicle.Type: GrantFiled: April 28, 1995Date of Patent: September 30, 1997Assignee: GenCorp Inc.Inventors: Cecil R. Gurganus, Roy C. Sanford, Jerry W. Atkinson, Scott E. Baker, Michael C. Sander, John J. Vincini
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Patent number: 5658672Abstract: A one-part, solvent free in-mold coating composition exhibiting good hardness, good crack resistance, and good adhesion to fiber reinforced plastic substrates includes a blend of a urethane polyacrylate compound having three or more (meth)acrylate groups, a urethane diacrylate or urethane divinyl compound, one or more adhesion promoters, and one or more ethylenically unsaturated copolymerizable monomers.Type: GrantFiled: May 8, 1995Date of Patent: August 19, 1997Assignee: GenCorp Inc.Inventors: Gerd M. Lenke, Earl G. Melby, H. William Cocain
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Patent number: 5640756Abstract: An automated continuous manufacturing system which includes a rotatable work table having a plurality of work piece supports for maintaining work pieces during operation of said system, and a plurality of work stations for performing cleaning, pretreatment, treatment or assembly tasks on work pieces secured to said work piece supports. Each of the tasks performed at the work table is performed at a respective work station. Certain of the work stations comprise a removable station subassembly for performing a specific task. The removable station subassemblies are removably engagable with the rotatable work table and may be replaced with an alternate removable station subassembly for performing a desired alternate task. One of the work stations is an assembly station engaged with the rotatable work table for receiving work pieces from their individual work piece supports. The assembly station further includes a removing subassembly for removing the work pieces from the work piece supports for further assembly.Type: GrantFiled: February 8, 1995Date of Patent: June 24, 1997Assignee: GenCorp Inc.Inventors: Robert L. Brown, James J. McDonald, Max J. Miller, Jr., David E. Baxter, deceased
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Patent number: 5635274Abstract: 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: GrantFiled: June 21, 1994Date of Patent: June 3, 1997Assignee: GenCorp Inc.Inventors: Kohji Y. Chihara, James A. Roth, Gary A. Krotke
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Patent number: 5632844Abstract: 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: GrantFiled: May 27, 1994Date of Patent: May 27, 1997Assignee: GenCorp Inc.Inventors: Joseph L. Pate, David L. Fishel
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Patent number: 5629047Abstract: 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: GrantFiled: August 6, 1990Date of Patent: May 13, 1997Assignee: GenCorp Inc.Inventors: Satish C. Sharma, Amiya K. Chatterjee, Ronald D. Mohan, Friedhold Schon
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Patent number: 5626383Abstract: 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: GrantFiled: December 28, 1994Date of Patent: May 6, 1997Assignee: GenCorp Inc.Inventors: Ching-Chih Lee, Richard A. Miranda, James F. Stevenson
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Patent number: 5622736Abstract: 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: GrantFiled: July 29, 1994Date of Patent: April 22, 1997Assignee: GenCorp Inc.Inventors: Robert L. Brown, Todd A. England, Daniel L. Goodell, David E. Baxter, deceased
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Patent number: 5622008Abstract: 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: GrantFiled: January 12, 1995Date of Patent: April 22, 1997Assignee: GenCorp Inc.Inventor: S. Brian King
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Patent number: 5623015Abstract: 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: GrantFiled: April 4, 1996Date of Patent: April 22, 1997Assignee: GenCorp Inc.Inventors: David F. Diehl, Peter C. Hayes
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Patent number: 5614052Abstract: 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: GrantFiled: December 21, 1994Date of Patent: March 25, 1997Assignee: GenCorp Inc.Inventor: Michael J. Fisher