Method of manufacturing coreless armature

Details Method of manufacturing coreless armature Method of manufacturing coreless armature

1979-10-01

1981-09-01

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

29516, 29598, 310 42, 310234, H02K 1502

Patent

active

042863759

ABSTRACT:
An improved method of manufacturing coreless armatures typically for coreless motors, according to which a coreless cylindrical coil and an insulative disk member carrying commutator segments and rotary shaft are mechanically strongly coupled together without any adhesive agent, is provided. A radially inward compressive force is applied to the outer periphery of the coil within which the disk member is inserted at position for the coupling until coil windings partly bulge inwardly to clamp the peripheral edge of the disk member whereas a substantial part of the windings is compressed dense and into a smooth cylindrical shape.

REFERENCES:
patent: 4110901 (1978-09-01), Nakamura et al.
patent: 4200971 (1980-05-01), Shimizu et al.

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