Manufacture of a miniature electric motor

Details Manufacture of a miniature electric motor Manufacture of a miniature electric motor

1986-04-23

1987-09-22

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

To produce composite, plural part or multilayered article

29596, 29598, 264263, 264269, 26427219, B29C 4514

Patent

active

046954198

ABSTRACT:
In a miniature electric motor employing therein pole teeth adapted to be energized by means of a coil accommodated in a bobbin, the improvement in which the pole teeth are fixedly unified with a non-magnetic material into a mass. In an electric motor having such a fixedly unified pole teeth mass structure incorporated therein, the high precision, mutual positional relationship of the constituent parts can be ensured. Moreover, since the pole teeth are formed in a unitary mass, machine workings such as cutting, grinding, and the like can be applied to the unitary mass without restriction, thereby to enable the spacing between the rotor and stator to be small and uniform, leading to increase in efficiency of the electric motor.

REFERENCES:
patent: 3502914 (1970-03-01), Cox
patent: 3549918 (1970-12-01), Croymans
patent: 3678311 (1972-07-01), Mattingly
patent: 3691414 (1972-09-01), Kappius
patent: 3904902 (1975-09-01), Inariba
patent: 3979822 (1976-09-01), Halm
patent: 4009406 (1977-02-01), Inariba
patent: 4015154 (1977-03-01), Tanaka et al.
patent: 4052630 (1977-10-01), Inariba
patent: 4056744 (1974-11-01), Blanchard
patent: 4185214 (1980-01-01), Gerber
patent: 4255681 (1981-03-01), Gerber
patent: 4540536 (1985-09-01), Altmann et al.

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