EP 0012739 B1 19811014 - CHOKE
Title (en)
CHOKE
Publication
Application
Priority
AT 882778 A 19781212
Abstract (en)
[origin: US4301437A] An impedance coil core which includes a plurality of core legs and yokes which interconnect the core legs in an assembled condition of the core is provided with aligned recesses in the yokes and in the core legs for accommodating tensioning bolts which extend into the recesses and press the yokes against the core legs in the assembled condition. Each of the core legs includes a plurality of laminated assemblies including sheet metal elements. Those portions of the yokes and at least of the laminated assemblies adjoining the latter are provided with non-magnetic intermediate layers in the central region which is provided with the recesses. The intermediate layers in the core legs are wedge-shaped and diverge toward the adjacent yokes, and the intermediate layers in the yokes are cross-sectionally rectangular.
IPC 1-7
IPC 8 full level
H01F 27/24 (2006.01); H01F 3/02 (2006.01); H01F 27/245 (2006.01); H01F 37/00 (2006.01)
CPC (source: EP US)
H01F 3/02 (2013.01 - EP US); H01F 27/245 (2013.01 - EP US); H01F 37/00 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE NL SE
DOCDB simple family (publication)
EP 0012739 A1 19800625; EP 0012739 B1 19811014; AT 357236 B 19800625; AT A882778 A 19791115; DE 2961033 D1 19811224; JP S5582422 A 19800621; JP S6030088 B2 19850715; US 4301437 A 19811117
DOCDB simple family (application)
EP 79890057 A 19791211; AT 882778 A 19781212; DE 2961033 T 19791211; JP 16041579 A 19791212; US 10232979 A 19791211