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US 4,993,325 AGranted
Magnetic field generator
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsJames C. Slone, Jr., John A. Hudson, Bernard Deleman
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Abstract
This invention discloses a magnetic field generator employing a direct cunt electromagnetic coil which is swept through a predetermined area by a drive motor and transmission means. Circuit means are disclosed to periodically reverse the polarity of the generated magnetic field either in synchronism with the sweeping of the electromagnetic coil or at a time related frequency.
Claims9
A magnetic field generating means comprising in combination:
- coil assembly means for generation of a magnetic field in response to electrical current flowing therein;
- axle means attached to said coil assembly means and passing through the center thereof for rotatable support thereof;
- bearing means on opposite sides of said coil assembly means and journaled about said axle means for rotatably supporting said axle means therein;
- support means attached to said bearing means for support thereof, along with said axle means and said coil assembly means carried therewith;
- drive means effectively attached to said axle means for selective rotation thereof within said bearing means, said drive means including an electric motor and a speed reduction means effectively interconnecting the output of said electric motor and the aforesaid axle means for the transmission of rotational driving energy thereto;
- generator means electrically connected to said coil assembly means for supplying electrical current thereto;
- and
- control means electrically connected to said generator means for reversing the direction of the current output thereof to thereby reverse the polarity of the magnetic field produced by said coil assembly means.
5 more elements
Dependencies are inferred from the claim text.