Carbon brush for electric machine
AssigneeTotankako Co., Ltd.
InventorsKazuhiro Takahashi, Masayuki Takuma, Koji Kuroda
Life of this patent
Estimating the term…
Abstract
A metal of good electric conductor is coated over the whole surface of the carbon brush material comprising molybdenum disulfide, tungsten disulfide or the like as a solid lubricant and any of alumina, silica, silicon carbide or the like, except a part of the carbon brush material to be contacted with a commutator. At least a part of at least either of side surfaces of the carbon brush orthogonal to a rotation direction of the commutator is formed as an area in which a metal coating of good electric conductor is not formed and from which the carbon brush material is exposed.
Claims8
A carbon brush for electric machinery wherein a metal coating of good electric conductor is formed on carbon brush material comprising a solid lubricant and an abrasive.
A carbon brush (1) for electric machinery which is to be abutted with a conductive rotary member (2), wherein a metal coating of good electric conductor is formed on a carbon brush material of the carbon brush (1), and at least a part of at least either of side surfaces (1a, 1c) of the carbon brush orthogonal to a rotation direction of the conductive rotary member (2) is an area in which the metal coating of good electric conductor is not formed and from which the carbon brush material is exposed.
Dependencies are inferred from the claim text.