Method of making a voice coil with rectangular coil wire and foi

Details Method of making a voice coil with rectangular coil wire and foi Method of making a voice coil with rectangular coil wire and foi

1986-10-10

1989-05-02

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

228110, 336192, H01F 4106

Patent

active

048255335

ABSTRACT:
A coil for a speaker in which a rectangular coil wire is formed by being cut from a sheet and then wound on the bobbin with its long direction disposed radially. Electrical connection is made to at least one end of the coil wire by ultrasonic welding to a conductive foil laid between the coil wire and the bobbin.

REFERENCES:
patent: 2714173 (1955-07-01), Wieseman
patent: 3153213 (1964-10-01), Stanwyck
patent: 3196523 (1965-07-01), Bell
patent: 3277417 (1966-10-01), Rechel
patent: 3300851 (1967-01-01), Lodder
patent: 3378801 (1968-04-01), Smith, II
patent: 4109375 (1978-08-01), Lin et al.
patent: 4258467 (1981-03-01), Witte
patent: 4617725 (1986-10-01), Holter et al.

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