Document Type and Number:
Japanese Patent JPH01503350
Kind Code:
A
Abstract:
PCT No. PCT/NO88/00034 Sec. 371 Date Feb. 2, 1989 Sec. 102(e) Date Feb. 2, 1989 PCT Filed May 3, 1988 PCT Pub. No. WO88/09083 PCT Pub. Date Nov. 17, 1988.A pump or a control valve for molten metal with a pipe (11) made of refractory or sufficiently resistant materials which are absolutely or almost non-conductive to electricity. An induction coil (12) for alternating current is concentrically-situated in a certain position surrounding the pump pipe. A cylindrical displacement unit (13) which has a smaller diameter than the bore of the pump pipe ends in the area of the pipe where the coil is located. A cylindrical annulus is formed, which in the vicinity of the coil extends to the full cross section of the pipe.
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Application Number:
JP50371088A
Publication Date:
November 09, 1989
Filing Date:
May 03, 1988
Export Citation:
International Classes:
H02K44/06; H02K44/02; (IPC1-7): H02K44/06