The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 10, 1978
Filed:
Feb. 22, 1977
Georgy Nikolaevich Fridman, Moscow, SU;
Jury Nikolaevich Vasiliev, Moscow, SU;
Abram Samoilovich Fialkov, Moscow, SU;
Vladimir Petrovich Sosedov, Moscow, SU;
Alexandr Andreevich Tarasov, Moscow, SU;
Yakov Gilievich Davidovich, Moscow, SU;
Nikolai Sergeevich Voronin, Moscow, SU;
Alexei Gavrilovich Shirokov, Moscow, SU;
Alexandr Iudovich Sokolovsky, Moscow, SU;
Anatoly Alexandrovich Kozyrev, Elektrogorsk Moskovskoi oblasti, SU;
Roza Petrovna Berlizova, Moscow, SU;
Evgeny Mikhailovich Kozlov, Moscow, SU;
Anatoly Alexeevich Boiko, Elektrougli Moskovskoi oblasti, SU;
Andrei Nikolaevich Gusev, Moscow, SU;
Olga Borisovna Kazakova, Elektrougli Moskovskoi oblasti, SU;
Valery Alexeevich Fugol, Moscow, SU;
Nadezhda Vasilievna Kalinina, Moscow, SU;
Valentina Mikhailovna Emelyanova, Moscow, SU;
Abram Yakovlevich Gluskin, deceased, LATE OF Moscow, SU;
by Boris Gluskin, administrator, Moscow, SU;
Other;
Abstract
A carbon graphite material for brushes of electric machines contains ultraphosphates of metals which are sealed by film-forming polymers. The material is impregnated in a mixture of a metal chloride with an aqueous solution of orthophosphoric acid and heat treated to form ultraphosphates of metals evenly distributed throughout the entire volume of the material. The material is then impregnated in a film-forming polymer resin solution, which enhances the contact characteristics of the material, and again heat treated till the resin is fully polymerized. As a result, the ultraphosphates which have formed earlier in the material, are sealed, thus becoming hydrolytically stable; at the same time, the contact characteristics of the material improve generally, the material becoming highly wear resistant, capable of operating within a wide range of temperatures, pressures and humidity.