Method for manufacturing a tubular-shaped multilayer coil for el

Details Method for manufacturing a tubular-shaped multilayer coil for el Method for manufacturing a tubular-shaped multilayer coil for el

1975-05-30

1976-12-07

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

29605, 140 921, 310266, H02K 1502

Patent

active

039953645

ABSTRACT:
A method of winding a tubular-shaped multilayer coil usable as an ironless rotor for electrical motors. A cylindrical form having a rhomboidal cross-section is used as a core for making a cylindrical winding having a number of taps intended to be connected to a commutator of a slip ring device. The cylindrical winding is stripped off from the cylindrical form and flattened to a bandlike structure without deforming the configuration of the windings. The bandlike structure is bent and the ends thereof are joined to form a tubular-shaped coil usable as an ironless rotor. The wire is wound on the cylindrical core in a multilayer formation by alternating the direction of axial advancement or displacement of the windings so as to form a cylindrical winding having a thickness of at least three times that of the diameter of the insulated wire.

REFERENCES:
patent: 2759116 (1956-08-01), Glass
patent: 3441761 (1969-04-01), Painton et al.
patent: 3793548 (1974-02-01), Faulhaber

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