Patents Examined by I. Vaughn
  • Patent number: 4164473
    Abstract: Hydrocarbon-soluble organo molybdenum complexes obtained as the reaction product of a hydrocarbyl substituted hydroxy alkylated amine e.g. N,N',N'-tris(2-hydroxy ethyl)-n-tallow-1,3-diaminopropane, with about one molar equivalent of a molybdenum compound, e.g. ammonium molybdate, are useful hydrocarbon additives particularly in combination with an oil-soluble sulfur donor, e.g. a metal dialkyl dithiophosphate to provide an additive combination for lubricating oils since the lubricating compositions comprising these co-additives exhibit improved anti-friction and anti-wear properties.
    Type: Grant
    Filed: July 28, 1978
    Date of Patent: August 14, 1979
    Assignee: Exxon Research & Engineering Co.
    Inventors: Keith Coupland, Clinton R. Smith
  • Patent number: 4025452
    Abstract: As a new class of multifunctional additives, for imparting dispersancy and viscosity improving properties to lubricant compositions, ether-linked polymers having the structure: ##STR1## in which: A and B may be the same, i.e.
    Type: Grant
    Filed: May 12, 1975
    Date of Patent: May 24, 1977
    Assignee: Mobil Oil Corporation
    Inventors: John C. Nnadi, Israel Joel Heilweil
  • Patent number: 4022700
    Abstract: Azourethane and urea compounds corresponding to the formula ##STR1## WHEREIN R is an aliphatic hydrocarbyl radical, B is oxygen or nitrogen and Ar is an arylene radical, are highly efficacious grease thickening agents.
    Type: Grant
    Filed: March 3, 1976
    Date of Patent: May 10, 1977
    Assignee: Shell Oil Company
    Inventor: Howard A. Harris
  • Patent number: 4014802
    Abstract: An oil-impregnated sintered product having a resin-impregnated layer on the surface thereof for preventing oil contained therein from scattering therefrom when it moves at high speed. A method of producing the same comprising the steps of forming a seal layer on a sintered product, impregnating the sintered product with thermosetting resin, removing the seal layer, and impregnating the sintered product with oil.
    Type: Grant
    Filed: July 18, 1973
    Date of Patent: March 29, 1977
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Hiroshi Seino, Norio Yamada, Shigeo Kimura, Hideaki Kosugi, Koreyuki Yamamoto
  • Patent number: 4013570
    Abstract: An improved colloidal graphite hot forming lubricant and hot forming process for high density ferrous powdered metal articles using this lubricant. Extremely fine powdered copper is included in an otherwise conventional colloidal graphite hot forming lubricant. High quality, including high density, ferrous metal articles are produced by coating a ferrous powdered metal preform with this lubricant, presintering the coated preform at a higher temperature of 2100.degree. - 2500.degree. F. for a short time by induction heating, allowing the presintered preform to cool to a desired hot forming temperature below 2000.degree. F., and then hot forming the preform in the usual manner. Lubricant-preform interaction at the higher temperature is precluded, making long presintering times and special presintering equipment necessary.
    Type: Grant
    Filed: April 7, 1975
    Date of Patent: March 22, 1977
    Assignee: General Motors Corporation
    Inventor: Harold G. Lemmer
  • Patent number: 4002568
    Abstract: New compounds are derived from intra-molecular and inter-molecular, in the case of a polymer, sulphur bridged hydrocarbon rings of 12 carbon atoms. The hydrocarbon ring is preferably 1,5,9-cyclododecatriene. The compound also contains the residue of a dithiophosphoric acid containing two organic moieties. The new compounds are useful in major or minor amounts in lubricating oil compositions. The lubricating oil may be a hydraulic oil. The composition may also contain other conventional lubricant additives.
    Type: Grant
    Filed: October 3, 1974
    Date of Patent: January 11, 1977
    Assignee: Edwin Cooper & Company Limited
    Inventors: Gerald John Joseph Jayne, Herbert Frank Askew
  • Patent number: 4001124
    Abstract: An improved plastic bearing composition for use in sliding contact with metals is disclosed in which one component is selected for its facility to coat the metal bearing surface, a second component is selected for its chemical inertness, and a third component is selected as a carrier material for the second chemically inert component.
    Type: Grant
    Filed: March 17, 1975
    Date of Patent: January 4, 1977
    Assignee: The Polymer Corporation
    Inventor: Eugene H. Hussey
  • Patent number: 3998745
    Abstract: A method for manufacturing a semi-fluid lubricant resistant to shear thickening to a controlled apparent viscosity is provided wherein a soap base containing about 14% soap is shear thickened and then diluted with oil to a desired soap content. The use of a soap base containing about 14% soap as opposed to the usual method of using a soap base containing about 5% soap surprisingly results in a finished semi-fluid lubricant which will not appreciably increase in viscosity during the handling and packaging process.
    Type: Grant
    Filed: February 12, 1975
    Date of Patent: December 21, 1976
    Assignee: Texaco Inc.
    Inventors: Norman R. Odell, Melvin R. Hefty, Clarence Vaughn, Arthur W. Wammel
  • Patent number: 3997454
    Abstract: An extreme-pressure lubricating composition is disclosed comprising an oil of lubricating viscosity having dispersed therein 1 to 60 weight percent of hydrated potassium borate microparticles having a boron-to-potassium ratio of about 2.5 to 4.5 and, optionally, from 0.01 to 5.0 weight percent of an antiwear agent selected from: (a) a zinc dihydrocarbyl dithiophosphate having from 4 to 20 carbons in each hydrocarbyl group; (b) a C.sub.1 to C.sub.20 ester, C.sub.1 to C.sub.20 amide, or C.sub.1 to C.sub.20 amine salt of a dihydrocarbyl dithiophosphoric acid having from 4 to 20 carbons in each hydrocarbyl group; or (c) mixtures thereof.
    Type: Grant
    Filed: June 4, 1975
    Date of Patent: December 14, 1976
    Assignee: Chevron Research Company
    Inventor: John Howard Adams
  • Patent number: 3996143
    Abstract: A bearing member comprises a bearing surface consisting essentially of a cured mixture of an acrylate composition, a particulate solid lubricant and organic or inorganic fillers.
    Type: Grant
    Filed: October 3, 1975
    Date of Patent: December 7, 1976
    Assignee: Kamatics Corporation
    Inventors: Stanley S. Orkin, Edward J. Nagy
  • Patent number: 3996024
    Abstract: Monocarboxylic acid salts of hydrocarbyl amines are provided, which function as rust inhibitory and dispersant hydrocarbon fuel additives, wherein the hydrocarbyl substituent contains from 30 to about 300 carbon atoms.
    Type: Grant
    Filed: June 22, 1973
    Date of Patent: December 7, 1976
    Assignee: Chevron Research Company
    Inventors: Marvin D. Coon, deceased, Phyllis B. Coon, administratrix
  • Patent number: 3994815
    Abstract: Additive concentrates comprising hydrogenated alkenyl-arene-conjugated diene interpolymers and a non-ester type synthetic lubricating oil diluent are disclosed. Lubricating compositions prepared from these concentrates are also disclosed.
    Type: Grant
    Filed: October 6, 1975
    Date of Patent: November 30, 1976
    Assignee: The Lubrizol Corporation
    Inventor: Lester Earl Coleman
  • Patent number: 3992309
    Abstract: There are disclosed triaryl phosphate ester functional fluids, such as lubricants and hydraulic fluids, which contain as the oxidatively stable component, a mixed tertiary-butylphenyl/phenyl phosphate containing about 15 to 60% by weight t-butylphenyl radicals.
    Type: Grant
    Filed: April 3, 1975
    Date of Patent: November 16, 1976
    Assignee: FMC Corporation
    Inventor: Harry Dounchis
  • Patent number: 3990979
    Abstract: Half lithium salts of aliphatic hydrocarbon substituted succinic anhydrides and acids are reacted with polyhydric alcohols to provide an effective rust and corrosion inhibiting additive preferably having dispersant properties for lubricating oil compositions.
    Type: Grant
    Filed: October 23, 1974
    Date of Patent: November 9, 1976
    Assignee: Exxon Research and Engineering Company
    Inventor: Philip W. Brewster
  • Patent number: 3988248
    Abstract: A grease which has improved stability at high temperature is provided by incorporating in an otherwise conventional grease a lithium soap of a hydroxy-stearic acid and an alkali borate. The grease is made by adding lithium tetraborate directly to a mixture comprising a lithium soap of a hydroxy-fatty acid and lubricating oil wherein the resulting mixture has from about 5 to 20 percent by weight of the lithium soap and from about 0.1 to 3 percent by weight of lithium tetraborate.
    Type: Grant
    Filed: March 17, 1975
    Date of Patent: October 26, 1976
    Assignee: Deutsche Texaco Aktiengesellschaft
    Inventor: Hans Dieter Grasshoff
  • Patent number: 3986966
    Abstract: A cosulfurized product of a mixture of (a) a triglyceride having an iodine value greater than 80, preferably rapeseed oil, and (b) nonwax ester comprising the methyl ester of a fatty acid having from 18 to 22 carbon atoms or a mixture thereof, said fatty acid being predominantly monoethylenically unsaturated, has excellent extreme pressure and low temperature properties and is an effective substitute for sulfurized sperm oil.
    Type: Grant
    Filed: March 17, 1975
    Date of Patent: October 19, 1976
    Assignee: Shell Oil Company
    Inventor: Jamil M. Wakim
  • Patent number: 3986965
    Abstract: The oxidation resistance of synthetic ester base functional fluids is enhanced by incorporating in the fluid small amounts of triphenylphosphine or triphenylphosphine oxide together with a complex alkali metal organophosphorus compound.
    Type: Grant
    Filed: October 31, 1975
    Date of Patent: October 19, 1976
    Assignee: Monsanto Company
    Inventors: Frank S. Clark, Stanley L. Reid
  • Patent number: 3985662
    Abstract: Grease compositions comprising (1) a lithium soap derived from a fatty acid containing an epoxy group and/or ethylenic unsaturation, and (2) a dilithium soap derived from a straight chain dicarboxylic acid. In a preferred embodiment, the grease composition will also comprise a lithium salt derived from a hydroxy-substituted carboxylic acid. Greases comprising lithium salts derived from an epoxy substituted fatty acid in combination with other lithium salts and derived from an ethylenically unsaturated fatty acid, a dicarboxylic acid and a hydroxy-substituted aromatic acid are particularly effective.
    Type: Grant
    Filed: February 28, 1975
    Date of Patent: October 12, 1976
    Assignee: Exxon Research and Engineering Company
    Inventors: Ian D. Campbell, Terrance O. Brown, Donald W. Murray
  • Patent number: 3985661
    Abstract: A lubricant-containing synthetic resin composition, prepared by pre-mixing 2 to 40% by volume of a lubricant consisting of at least one lubricant oil and/or at least one oilinessincreasing agent, with at least one carrier which is an organic or inorganic powder having a melting point higher than the molding temperature of a base synthetic resin, a specific surface area of at least 0.3 m.sup.2 /g and a limited amount of oil absorbed of at least 0.2 cc/carrier cc, and then mixing the mixture with the base synthetic resin, or mixing the lubricant, carrier and base synthetic resin simultaneously, and then molding the resulting mixture, the amount of the lubricant being not more than 10.0 times the limit amount of oil absorbed by the carrier.
    Type: Grant
    Filed: June 27, 1974
    Date of Patent: October 12, 1976
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Hirosaka Ikeda, Masaki Ishikawa
  • Patent number: RE29092
    Abstract: Self-lubricating bearings and other machine elements are prepared by admixing perfluoroalkylene polymers such as polytetrafluoroethylene with defined inorganic solid lubricants and epoxy resins followed by a cold molding technique and heating cycle which allows the economical production of large numbers of self-lubricating parts with excellent precision and low dimensional change.
    Type: Grant
    Filed: March 26, 1975
    Date of Patent: December 28, 1976
    Assignee: Dow Corning Corporation
    Inventors: Harry M. Schiefer, Raymund W. Laux, Dietmar W. Grosse