Patents Assigned to General Tire
  • In-mold coating of sheet molding compound moldings
    Patent number: 4367192
    Abstract: Liquid compositions suitable for hot post-mold coating of cured sheet molding compound (SMC) parts comprise a reaction product of an epoxide and an unsaturated carboxylic acid mixed with a low shrink additive and a filler having a sheet-like structure. These liquid compositions are used to smooth surfaces, fill porosity and other voids and to eliminate or reduce sink marks. Coatings typically are cured in less than two minutes and appear able to provide many features of normal painting without paint facilities except possibly those needed for touch-up.The application method used to date has been to compression mold an SMC part in the usual way, separate the mold halves, inject the liquid composition and reclose the mold for a second cure cycle. A unique feature of the liquid composition is its ability to adhere to an uncleaned SMC molding.
    Type: Grant
    Filed: May 4, 1981
    Date of Patent: January 4, 1983
    Assignee: The General Tire & Rubber Company
    Inventor: Sigurdur I. Arnason
  • Dimensionally stable PVC roof membrane
    Patent number: 4358499
    Abstract: A PVC roofing membrane cast from a plastisol has less than 1.5% shrinkage when held at 176.degree. F. (80.degree. C.) for six hours and remains flexible at -60.degree. F. (-51.degree. C.). The low shrinkage reduces tensions in the roofing membrane, simplifying the application of the membrane to a roof, and reducing stresses caused by dimensional changes at high service temperatures.
    Type: Grant
    Filed: December 18, 1980
    Date of Patent: November 9, 1982
    Assignee: The General Tire & Rubber Company
    Inventor: Lawrence I. Hill
  • Method for treating polypropylene ether and poly-1,2-butylene ether polyols
    Patent number: 4355188
    Abstract: Polyetherpolyols containing residues of catalysts of the double metal cyanide complex class are treated with a strong base and ion exchanged or neutralized and filtered to provide a stable polyol with reduced tendency to form allophanates with diisocyanates. Further, the addition of ethylene oxide to the polyol while in contact with the strong base serves to end cap the polyol to provide it with primary hydroxyl groups.
    Type: Grant
    Filed: September 25, 1981
    Date of Patent: October 19, 1982
    Assignee: The General Tire & Rubber Company
    Inventors: Robert J. Herold, Robert E. Bingham
  • Solution polymerization
    Patent number: 4355156
    Abstract: A composition useful as a catalyst in solution polymerization comprises (1) a barium, calcium and/or strontium alcoholate, (2) an organoaluminum compound and (3) an organomagnesium compound. (2) and (3) may be used as a complex with (1). The compositions can be used to polymerize ethylenically unsaturated monomers like butadiene, butadiene and styrene, and isoprene and heterocyclic monomers like oxiranes, thiiranes, siloxanes, thiatanes and lactams. The catalyst composition can produce polybutadienes and butadiene-styrene copolymers having a trans-1,4 content as high as 90%. The non-terminating features of the polymerization of this invention permit the preparation of functionally terminated butadiene based polymers and block polymers containing sufficient amounts of trans-1,4 butadiene units to crystallize.
    Type: Grant
    Filed: September 14, 1981
    Date of Patent: October 19, 1982
    Assignee: The General Tire & Rubber Company
    Inventors: Robert E. Bingham, Richard R. Durst, Hubert J. Fabris, Ivan G. Hargis, Russell A. Livigni, Sundar L. Aggarwal
  • Adhesion of rubber to glass fibers
    Patent number: 4355131
    Abstract: An aqueous alkaline dispersion of a rubbery graft or over polymerized copolymer of a diene and a vinyl pyridine on a polyacrylate seed (core or substrate), said acrylate polymer having a Tg of not above about -20.degree. C., desirably also containing a polybutadiene, and a water soluble, heat reactable phenolic resin, in certain amounts is useful in forming an adhesive for bonding glass fiber reinforcing elements or cords to rubber compounds or stocks. After dipping the glass fiber cord in the one-step adhesive dip, the coated cord is heated to dry it and heat cure or heat set the adhesive on the cord. Thereafter, the adhesive containing glass fiber cord is combined or laminated (calendered) with a curable rubber compound and the resulting assembly is cured to form a composite in which the glass fiber cord is bonded to the rubber by means of said adhesive.
    Type: Grant
    Filed: December 17, 1981
    Date of Patent: October 19, 1982
    Assignee: The General Tire & Rubber Company
    Inventor: Richard M. Wise
  • Rubber slab dip
    Patent number: 4354001
    Abstract: A composition of a blend of a carboxylated copolymer latex and an acrylate copolymer latex containing a minor amount by weight of a heat sensitizer sufficient to gel the composition and which also can contain fillers, wetting agents and stabilizers, and so forth can be used to provide a water resistant film on the surface of a hot rubber compound or composition which subsequently can be cooled rapidly with water and dried. The resulting latex coated rubber can then be stacked or assembled without sticking.
    Type: Grant
    Filed: December 21, 1981
    Date of Patent: October 12, 1982
    Assignee: The General Tire & Rubber Company
    Inventor: Tiong H. Kuan
  • Resilient strip and metal carrier therefor
    Patent number: 4348443
    Abstract: A resilient strip with a channel-shaped section that attaches to a flange on an automobile frame has improved metal carrier fixed to its channel-shaped section. The metal carrier has a continuous longitudinal web with sheet metal elements extending from either side that are triangular in shape. The triangular-shaped elements require only half the metal as the conventional rectangular elements, yet they have the same holding power for maintaining the resilient strip on the flange of the automobile body.
    Type: Grant
    Filed: December 18, 1980
    Date of Patent: September 7, 1982
    Assignee: The General Tire & Rubber Company
    Inventor: Richard D. Hein
  • Deflated tire lubricant
    Patent number: 4340104
    Abstract: To facilitate relative movement between the internal surfaces of a pneumatic tire which come into contact when the tire is run in a deflated condition, the interior of the tire is coated with a lubricant which does not flow at normal tire operating temperatures. The matrix of the lubricant is a polyester, polyurea or polyurethane which does not begin to flow until the tire reaches a temperature of from 65.degree. C. to 150.degree. C. If the lubricant were allowed to flow at operating temperatures, it would adversely effect the balance and performance of the tire. The high tire temperature indicates that the tire is flat and reduces the viscosity of (liquifies) the lubricant causing it to flow. The lubricant then reduces rubbing friction and temperature rise which would otherwise occur by rubber-to-rubber contact. The lubricated tire can be run flat to a service station.
    Type: Grant
    Filed: March 28, 1980
    Date of Patent: July 20, 1982
    Assignee: The General Tire & Rubber Company
    Inventor: Tiong H. Kuan
  • Tire cord adhesives
    Patent number: 4338263
    Abstract: Vulcanizable rubber compositions providing excellent bonding of textile or metal reinforcing fibers thereto which comprises a rubber, a filler material, and an N-(substituted oxymethyl) melamine, 4,4'-isopropylidenediphenol reaction product or solution.
    Type: Grant
    Filed: August 18, 1980
    Date of Patent: July 6, 1982
    Assignee: The General Tire & Rubber Company
    Inventor: Otto C. Elmer
  • Adhesion of brass to rubber
    Patent number: 4333785
    Abstract: At least a substantial amount of the corrosion products on the surface(s) of brass plated steel cord are removed by treatment in an aqueous solution containing a minor amount of an NH.sub.4, Na, K, Li, Ca, Mg, Sr, Ba and Zn salt of a saturated aliphatic carboxylic acid of from 1 to 5 carbon atoms.
    Type: Grant
    Filed: April 15, 1981
    Date of Patent: June 8, 1982
    Assignee: The General Tire & Rubber Company
    Inventor: David E. Erickson
  • Adhesion of rubber to brass
    Patent number: 4333787
    Abstract: The adhesion of brass plated steel cord to rubber is improved by treating the cord in a dilute acidic alcohol dip followed by treatment with H.sub.2 S gas or by treating the cord in a dilute aqueous ammonia dip, preferably followed by treatment with H.sub.2 S gas, before combining the cord with a vulcanizable rubber compound and vulcanizing the same.
    Type: Grant
    Filed: May 22, 1980
    Date of Patent: June 8, 1982
    Assignee: The General Tire & Rubber Company
    Inventor: David E. Erickson
  • Blend of a carboxylated copolymer latex and of an acrylate copolymer latex for coating rubber and product
    Patent number: 4331738
    Abstract: A composition of a blend of a carboxylated copolymer latex having a Tg of not less than about -30.degree. C. such as a copolymer of styrene, itaconic and methacrylic acids and butadiene-1,3 and an acrylate copolymer latex having a Tg of not less than about +30.degree. C. such as a copolymer of ethylacrylate, methyl methacrylate and acrylamide containing a minor amount by weight of a heat sensitizer sufficient to gel the composition and which also can contain fillers, wetting agents and stabilizers, and so forth can be used to provide a water resistant film on the surface of a hot rubber compound or composition which subsequently can be cooled rapidly with water and dried. The resulting latex coated rubber can then be stacked or assembled without sticking.
    Type: Grant
    Filed: December 4, 1980
    Date of Patent: May 25, 1982
    Assignee: The General Tire & Rubber Company
    Inventor: Tiong H. Kuan
  • One component in-mold coating
    Patent number: 4331735
    Abstract: An FRP molding can be in-mold coated using a one-component peroxide initiated composition of (a) a liquid crosslinkable composition having an average molecular weight of up to about 5,000, having a plurality of polymerizable ethylenic double bonds, being essentially free of active hydrogen atoms or being essentially free of isocyanate groups and (b) a material selected from the group consisting of (I) a polyisocyanate and (II) the reaction product of an excess of equivalents of a polyisocyanate and an ethylenically unsaturated compound having --NH.sub.2, --NH-- and/or OH groups, said reaction product being free of active hydrogen atoms.
    Type: Grant
    Filed: May 20, 1981
    Date of Patent: May 25, 1982
    Assignee: The General Tire & Rubber Company
    Inventor: Henry Shanoski
  • In-the-mold coating apparatus and method
    Patent number: 4329134
    Abstract: A method and apparatus for forming a thermoset in-the-mold coating on a hot, cured glass fiber reinforced thermoset resin substrate by (1) separating the mold halves slightly while maintaining a seal with the shear edge, (2) injecting an in-the-mold coating resin in a stream which flows parallel from the injector onto a surface of the substrate, and (3) closing the mold and curing the coating under pressure. The separation and of the mold halves is performed by the conventional mold ram. Preferably the mold surface forming the coated surface of the substrate is roughened.
    Type: Grant
    Filed: September 19, 1980
    Date of Patent: May 11, 1982
    Assignee: The General Tire & Rubber Company
    Inventors: Sigurdur I. Arnason, Edward J. Kleese
  • Bead setting apparatus with retractable flange
    Patent number: 4324604
    Abstract: An apparatus and method of setting a bead ring against the plies of a tire carcass on the shoulder of a building drum includes a carrier member with a retractable bead support flange. As the carrier member pushes the bead firmly against the carcass plies, the bead support flange is also pushed against the carcass plies, and the flange partly retracts under the pressure. Then, a fluid operated piston drives the support flange further away from the carcass plies, leaving the bead ring almost unsupported, but pressed firmly against the carcass plies on the building drum. The carrier member then retracts away from the building drum, leaving the bead ring in place on the building drum shoulder and ready to have the carcass ply end portions wrapped around it.
    Type: Grant
    Filed: December 22, 1978
    Date of Patent: April 13, 1982
    Assignee: The General Tire & Rubber Co.
    Inventors: Joseph H. Alexander, Frank R. Jellison
  • Apparatus and method for forming dielectrically sealed laminar sheet materials
    Patent number: 4323409
    Abstract: An apparatus and method are disclosed for forming laminar sheet materials comprising a base material having overlay strap material dielectrically sealed thereto at spaced locations along the length of the base material. In accordance with the method, the strap material is positioned under tension adjacent an electrode bar for dielectric sealing to the base material and the lateral edges of the strap material are confined between retractable guides extending along the sides of the electrode bar. The strap material is tensioned and laterally confined until it is fixed to the base material by dielectric sealing. A dielectric sealing press including a strap feeder for tensioning and confining the strap material is also disclosed.
    Type: Grant
    Filed: February 28, 1980
    Date of Patent: April 6, 1982
    Assignee: The General Tire & Rubber Company
    Inventor: Rudolph Alt
  • Vehicle suspension bushing
    Patent number: 4316643
    Abstract: A vehicle suspension bushing that is constructed of an inner metal member, an outer metal member, and an elastomeric member inserted between the metal members has an improved construction that increases the bushing's axial rate, or resistance to axial deflection, and decreases its radial rate, or resistance to radial deflection. The main features of the improvement are circumferentially extending slots in the outer surface of the elastomeric member, located adjacent each end of the member, and inwardly extending flanges on the ends of the outer member that fit into the slots in the elastomeric member.
    Type: Grant
    Filed: March 25, 1980
    Date of Patent: February 23, 1982
    Assignee: The General Tire & Rubber Co.
    Inventors: Michael D. Burk, Gary L. Hipsher, Gregory M. Nicoles
  • Solution polymerization
    Patent number: 4307218
    Abstract: A composition useful as a catalyst in solution polymerization comprises (1) a barium, calcium and/or strontium alcoholate, (2) an organoaluminum compound and (3) an organomagnesium compound. (2) and (3) may be used as a complex with (1). The compositions can be used to polymerize ethylenically unsaturated monomers like butadiene, butadiene and styrene, and isoprene and heterocyclic monomers like oxiranes, thiiranes, siloxanes, thiatanes and lactams. The catalyst composition can produce polybutadienes and butadiene-styrene copolymers having a trans-1,4 content as high as 90%. The non-terminating features of the polymerization of this invention permit the preparation of functionally terminated butadiene based polymers and block polymers containing sufficient amounts of trans-1,4 butadiene units to crystallize.
    Type: Grant
    Filed: August 15, 1980
    Date of Patent: December 22, 1981
    Assignee: The General Tire & Rubber Company
    Inventors: Robert E. Bingham, Richard R. Durst, Hubert J. Fabris, Ivan G. Hargis, Russell A. Livigni, Sundar L. Aggarwal
  • Solution polymerization
    Patent number: 4302568
    Abstract: A composition useful as a catalyst in solution polymerization comprises (1) a barium, calcium and/or strontium alcoholate, (2) an organoaluminum compound and (3) an organomagnesium compound. (2) and (3) may be used as a complex with (1). The compositions can be used to polymerize ethylenically unsaturated monomers like butadiene, butadiene and styrene, and isoprene and heterocyclic monomers like oxiranes, thiiranes, siloxanes, thiatanes and lactams. The catalyst composition can produce polybutadienes and butadiene-styrene copolymers having a trans-1,4 content as high as 90%. The non-terminating features of the polymerization of this invention permit the preparation of functionally terminated butadiene based polymers and block polymers containing sufficient amounts of trans-1,4 butadiene units to crystallize.
    Type: Grant
    Filed: February 25, 1980
    Date of Patent: November 24, 1981
    Assignee: The General Tire & Rubber Co.
    Inventors: Robert E. Bingham, Richard R. Durst, Hubert J. Fabris, Ivan G. Hargis, Russell A. Livigni, Sundar L. Aggarwal
  • Method for pretreating glass cords which minimizes cord blows
    Patent number: 4302264
    Abstract: An improvement in the method of preparing a glass-reinforced elastomeric product whereby cord blows may be eliminated. The method includes treating the glass fabric with a dip which improves adhesion to the rubber, and calendering the glass fabric and the rubber compound. The improvement comprises the step, prior to the calendering, of applying to the glass fabric an overdip composition including an effective amount of a material which is a cure accelerator for the rubber, whereby the amount of time required for full cure, and compaction of the rubber compound is reduced.
    Type: Grant
    Filed: May 15, 1980
    Date of Patent: November 24, 1981
    Assignee: The General Tire & Rubber Company
    Inventor: James J. Devitt