Method for manufacturing commutator

Details Method for manufacturing commutator Method for manufacturing commutator

1980-06-23

1982-11-09

McCarthy, Helen M.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

29597, 75201, 75214, 75224, 75225, 75226, 310233, 310236, B22F 500

Patent

active

043583199

ABSTRACT:
A method for manufacturing commutator for use in rotary electric machines, in which a shaping material prepared from electrically conductive metal powder material or a mixture of the metal powder material and additive powder material such as carbon, molybdenum disulfide, etc. is placed in a shaping mold and subjected to compression-molding into annular or cylindrical shaped electrically conductive body, then an electrically insulative synthetic resin material is coated around, or filled in, the hollow cavity of the annular or hollow cylindrical body, and thereafter this annular or cylindrical body is machined to be divided into a plurality of segments for constituting the commutator.

REFERENCES:
patent: 2053662 (1936-09-01), Hardy
patent: 3248215 (1966-04-01), Bonis et al.
patent: 3568309 (1971-03-01), Preece
patent: 3812576 (1974-05-01), Yamaguchi
patent: 3837819 (1974-09-01), Hibbs
patent: 4188713 (1980-02-01), Kawano et al.
Chem Abstracts * 92 p. 309, item 151694e, May 5 '80, "Wear Resistant Sintered Alloy Composites for Sliding Use".

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