Method of making a self-supporting wire coil

Details Method of making a self-supporting wire coil Method of making a self-supporting wire coil

Filed on

1976-08-31

Date issued

1977-10-18

Examiner

Hall, Carl E.

Patent Class

Metal working

SubClass

Method of mechanical manufacture

SubSubClass

Electrical device making

Other Related Categories

29594, 29605, 1791155VC, 310 13, 310 27, 335222, 336205, H02K 1504, H01F 4106

Type

Patent

Status

active

Patent number

040539750

Description

ABSTRACT:
A wire is wound on a coil body form about a removable mandrel in a first layer in which the turns abut one another. A guide ring reverses the direction of lead of the wire to form a second, overlying layer in which the turns are spaced a short distance apart from one another. The final turns of the outer layer engage about the coil form. A casting agent applied to the coil penetrates the turns of the second and first layers and is hardened. The mandrel is removed and the coil is self-supporting, for use as in a moving-coil motor. A fiberglass sheet may optionally be applied about the first layer before the second layer is wound thereover to increase the strength of the coil.

REFERENCES:
patent: 3182384 (1965-05-01), Carlson et al.
patent: 3194992 (1965-07-01), Brown
patent: 3273226 (1966-09-01), Brous et al.

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