Method and apparatus for forming droplets from a magnetic liquid

Details Method and apparatus for forming droplets from a magnetic liquid Method and apparatus for forming droplets from a magnetic liquid

1973-12-28

1977-05-31

Hartary, Joseph W.

Recorders

Performance of multiple functions of steam and gas engines

Pressure responsive element

346 75, 346140R, G01D 1518

Patent

active

040273083

ABSTRACT:
One or more magnetic fields having non-uniform gradients is periodically applied to a magnetic liquid stream, which is preferably isotropic and virtually free of remanence, to create perturbations in the stream so as to form droplets therefrom with substantially uniform spacing and of substantially uniform size. If more than one of the magnetic fields is applied, the maximum strength of each field is spaced an integral multiple wave length from the maximum strength of the adjacent magnetic field with each magnetic field having substantially the same maximum strength. The wave length of the perturbation is preferably between 4d and 8d where d is the diameter of the stream.

REFERENCES:
patent: 3596275 (1971-07-01), Sweet
patent: 3698002 (1972-10-01), Appel
Toupin et al.; Magnetohydrodynamic Velocity Modulation of a Jet; IBM Tech. Disc. Bulletin, vol. 15, No. 4, Sept. 1972, pp. 1189-1190.
Pimbley, W. T.; Synchronization of Magnetic Ink Jet Printer, IBM Tech. Disc. Bulletin, vol. 16, No. 3, Aug. 1973, pp. 948-949.
Chang et al.; Drop Stream Formation in Ferromagnetic Fluids, IBM Tech. Disc. Bulletin, vol. 16, No. 5, Oct. 1973, pp. 1683-1684.

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