Patents by Inventor Alexandr Petrovich Krasnov

Alexandr Petrovich Krasnov has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Composition for antifriction material
    Patent number: 4076634
    Abstract: The proposed composition contains from 5 to 98 parts by weight of polyphenylquinoxaline, from 1 to 94 parts by weight of an antifriction filler, from 0 to 40 parts by weight of a reinforcing filler, and from 0.1 to 10 parts by weight of a modifying dopant such as terephthalaldehyde, tetranitrile of pyromellitic acid, metal polyphosphinates or carborane-containing compounds.The antifriction material on the basis of said composition features a low and stable coefficient of friction and provides for the operation of dry-friction assemblies constructed therefrom at temperatures of up to 350.degree. C.
    Type: Grant
    Filed: October 28, 1975
    Date of Patent: February 28, 1978
    Inventors: Vasily Vladimirovich Korshak, Irina Alexandrovna Gribova, Alexandr Petrovich Krasnov, Evgenia Semenovna Krongauz, Alla Markovna Berlin, Olga Vladimirovna Vinogradova, Georgy Viktorovich Mamatsashvili, Saga-Silviya Alexandrovna Pavlova, Pelageya Nikolaevna Gribkova, Nina Ivanovna Bekasova, Ljudmila Grigorievna Komarova, Vladimir Dmitrievich Vorobiev, Irina Vladimirovna Vlasova, Alexandr Vasilievich Vinogradov
  • Antifriction polymer material
    Patent number: 4064097
    Abstract: An antifriction polymer material which is a product of hardening of a composition consisting of a filler in amounts of 10-95 wt.% and a binder in amounts of 5-90 wt.%, a mixture of polyphenylenes being used as a binder containing ketal and/or acetyl groups of the general formula ##STR1## R.sub.3 and R.sub.4 being identical or different, the fraction with n =2-15 amounting to 4-20% of the binder weight.The proposed antifriction polymer material possesses high heat and thermal resistance of about 350.degree.C and 450.degree.C, respectively, which ensures a stable friction coefficient and a high wear resistance of the material at temperatures of up to 320.degree. C.
    Type: Grant
    Filed: February 25, 1976
    Date of Patent: December 20, 1977
    Inventors: Vasily Vladimirovich Korshak, Irina Alexandrovna Gribova, Alexandr Petrovich Krasnov, Mikhail Mikhailovich Teplyakov, Georgy Vasilievich Elerdashvili, Galina Ilinichna Gureeva, Valery Panteleimonovich Chebotarev, Raisa Alexeevna Dvorikova, Vladimir Alexandrovich Sergeev, Dali Mitrofanovna Kakauridze
  • Antifriction self-lubricating material
    Patent number: 4045400
    Abstract: An antifriction self-lubricating material comprising fusible polyimides or polyphenylquinoxalines taken in a quantity of from 5 to 95 percent by weight of the antifriction material, and a filler of molybdenum disulphide modified with phosphorus-containing acids or phosphorus-containing esters, the phosphorus content in the modified molybdenum disulphide being within the range from 0.01 to 2 percent by weight, and the modified molybdenum disulphide being taken in a quantity of from 5 to 95 percent by weight of the antifriction material.The modified molybdenum disulphide employed as the filler imparts improved antifriction properties to the material.
    Type: Grant
    Filed: May 14, 1975
    Date of Patent: August 30, 1977
    Inventors: Vasily Vladimirovich Korshak, Irina Alexandrovna Gribova, Martin Izrailevich Kabachnik, Alexandr Petrovich Krasnov, Alla Nikolaevna Chumaevskaya, Olga Vladimirovna Vinogradova, Svetlana Vasilievna Vinogradova, Evgenia Semenovna Krongauz, Alla Markovna Berlin, Alexandr Vasilievich Vinogradov, Galina Ilinichna Gureeva, Leonid Sergeevich Zakharov, Vladimir Dmitrievich Vorobiev, Irina Sergeevna Mazaeva, Georgy Viktorovich Mamatsashvili, Nikolai Sergeevich Zabelnikov, Natalia Monovna Kofman