Method of making a transformer core comprising strips of amorpho

Details Method of making a transformer core comprising strips of amorpho Method of making a transformer core comprising strips of amorpho

1992-10-28

1994-05-31

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

29738, 336213, 336234, H01F 4102

Patent

active

053157540

ABSTRACT:
Groups of amorphous steel strips, cut to appropriate length from a composite strip, are stacked in longitudinally-staggered relationship to form packets. The groups are made up by a process that comprises a pre-spooling operation that results in the strips and groups in each packet adhering together, even though dry. The individual packets are fed successively into a belt nester that includes a rotatable arbor and wrapping means that wraps the packets in superposed relationship about the arbor as the arbor rotates, thereby building up a hollow core form. The above-described adhesive effect precludes the strips and groups from shifting longitudinally while the packets are being wrapped about the arbor.

REFERENCES:
patent: 3049793 (1962-08-01), Cooper
patent: 3328737 (1967-06-01), Olsen
patent: 4467632 (1984-08-01), Klappert
patent: 4734975 (1988-04-01), Ballard et al.
patent: 4741096 (1988-05-01), Lee et al.

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