EP 0461829 B1 19950222 - Method of making a transformer core.
Title (en)
Method of making a transformer core.
Title (de)
Verfahren zur Herstellung eines Transformatorkerns.
Title (fr)
Procédé de fabrication d'un noyau de transformateur.
Publication
Application
Priority
US 53553890 A 19900611
Abstract (en)
[origin: EP0461829A1] 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. <IMAGE>
IPC 1-7
IPC 8 full level
H01F 27/24 (2006.01); H01F 41/02 (2006.01)
CPC (source: EP)
H01F 41/0226 (2013.01); H01F 41/024 (2013.01)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0461829 A1 19911218; EP 0461829 B1 19950222; CA 2042253 A1 19911212; CA 2042253 C 20000815; DE 69107518 D1 19950330; DE 69107518 T2 19951109; JP H04241408 A 19920828; JP H069180 B2 19940202
DOCDB simple family (application)
EP 91305192 A 19910610; CA 2042253 A 19910509; DE 69107518 T 19910610; JP 16343691 A 19910610