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:
Dec. 07, 1976
Filed:
Feb. 28, 1975
Georgy Nikolaevich Fridman, Moscow, SU;
Jury Nikolaevich Vasiliev, Moscow, SU;
Abram Samoilovich Fialkov, Moscow, SU;
Yakov Gilievich Davidovich, Moscow, SU;
Abram Yakovlevich Gluskin, Moscow, SU;
Anatoly Alexandrovich Kozyrev, Elektrogorsk Moskovskoi oblasti, SU;
Roza Petrovna Batyreva, Moscow, SU;
Evgeny Mikhailovich Kozlov, Moscow, SU;
Anatoly Alexeevich Boiko, Elektrougli Moskovskoi oblasti, SU;
Olga Borisovna Kazakova, Elektrougli Moskovskoi oblasti, SU;
Nadezhda Vasilievna Kalinina, Moscow, SU;
Valentina Mikhailovna Emelyanova, Moscow, SU;
Igor Vyacheslavovich Yartsev, Moscow, SU;
Other;
Abstract
The present invention relates to heavy-current electrical engineering, and more particularly to carbon-graphite brushes characterized by high wear resistance and low adhesive capacity of the brush dust, said brushes being intended for operation in commutator machines under moderate or heavy commutation conditions at an operating temperature of the sliding contact from 200.degree. to 250.degree. C, and to a method for manufacturing same. Carbon-graphite brushes for electric machines are made of a material which, after impregnation and heat treatment of the organic impregnation compound contains a dry residue evenly distributed through out the entire bulk volume thereof, the dry residue being a mixture of melamine-glyptal resin with a metal linoleate, in a polymerized state. A method for manufacturing carbon-graphite brushes, wherein said brushes are impregnated with a compound based on melamine-glyptal resin and a metal linoleate dissolved in toluene or turpentine oil or any other solvent then heat treated at temperature ranging from 120.degree. to 180.degree. C till the impregnant is fully polymerized, the rated content of the dry residue in the brushes being to 0.5-10% by weight with respect to the initial weight of the brush material.