Core assembly for coil units and method for producing the same

Details Core assembly for coil units and method for producing the same Core assembly for coil units and method for producing the same

1998-02-25

1999-10-26

Gellner, Michael L.

Inductor devices

Relatively movable core and coil

Plural coils with plural cores

336 59, 336 60, 336212, 320108, H01F 2702, H01F 2724

Patent

active

059735830

ABSTRACT:
A core assembly for coil units and a method for producing the same which can suppress a raise of temperature are provided. A secondary core (21) made of a ferrite includes a pair of core members (25, 25) which are symmetrical with respect to each other and are adapted to be coupled to each other. Each core member (25) is provided in its coupling surface (44) with a groove or apertune (43). When the core members (25, 25) are coupled to each other, the integrated grooves (43, 43) define a flow path (40) adapted to flow a cooling medium in the secondary core (21). Thus, it is possible to form a flow path in a core made of a sintered material which is too hard to be worked.

REFERENCES:
patent: 3675108 (1972-07-01), Nicholl
patent: 5408209 (1995-04-01), Tanzer et al.
patent: 5412304 (1995-05-01), Abbott
patent: 5680028 (1997-10-01), McEachern
patent: 5719483 (1998-02-01), Abbott et al.
Copy of WO 94 09544 A (Electrical Power Res Inst) Apr. 1994 Patent Abst. Japan, vol. 095, No. 010, Nov. 30, 1995 (1 pg).

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