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Title: US3890548: Pulsed capacitor discharge electric engine
[ Derwent Title ]

Country: US United States of America

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18 pages

Inventor: Gray, Edwin V.; Northridge, CA

Assignee: Evgray Enterprises, Inc., Van Nuys, CA
other patents from EVGRAY ENTERPRISES, INC. (184985) (approx. 1)
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Published / Filed: 1975-06-17 / 1973-11-02

Application Number: US1973000412415

IPC Code: Advanced: H02K 19/02; H02K 25/00; H02K 41/02; H02P 5/00;
Core: more...
IPC-7: H02P 5/00;

U.S. Class: Current: 318/139; 310/046; 318/400.08;
Original: 318/139; 318/254; 318/439; 310/046;

Field of Search: 310/046,5,6 318/194,439,254,139 320/001 307/110

Priority Number:
1973-11-02  US1973000412415

Abstract: There is disclosed herein an electric machine or engine in which a rotor cage having an array of electromagnets is rotatable in an array of electromagnets, or fixed electromagnets are juxtaposed against movable ones. The coils of the electromagnets are connected in the discharge path of capacitors charged to relatively high voltage and discharged through the electromagnetic coils when selected rotor and stator elements are in alignment, or when the fixed electromagnets and movable electromagnets are juxtaposed. The discharge occurs across spark gaps disclosed in alignment with respect to the desired juxtaposition of the selected movable and stationary electromagnets. The capacitor discharges occur simultaneously through juxtaposed stationary movable electromagnets wound so that their respective cores are in magnetic repulsion polarity, thus resulting in the forced motion of movable electromagnetic elements away from the juxtaposed stationary electromagnetic elements at the discharge, thereby achieving motion. In an engine, the discharges occur successively across selected ones of the gaps to maintain continuous rotation. Capacitors are recharged between successive alignment positions of particular rotor and stator electromagnets of the engine.

Attorney, Agent or Firm: Price, Gerald L. ;

Primary / Asst. Examiners: Schaefer, Robert K.; Feldhaus, John J.

INPADOC Legal Status: None          Buy Now: Family Legal Status Report

Family: Show 3 known family members

First Claim:
Show all 18 claims
    1. An electric engine comprings:
  • a housing;
  • an array of electromagnets uniformly spaced in said housing to form a stator;
  • a rotor cage on a shaft journaled in and rotatable within said housing and within said stator, said rotor cage having thereon a spaced array of electromagnets similar to said stator electromagnets and in number comprising an integral fraction of the number of electromagnets in said stator array;
  • each of the electromagnets of said stator and of said rotor having a magnetizable core of particular configuration and each being wound with a coil such that a pulse of unidirectional electric current through said coil magnetizes the respective core thereof to a particular magnetic polarity, and the faces of rotor cores juxtaposing selected stator cores are magnetized to the same polarity, the juxtaposed cores thereby tending to repel one another, one lead of each of the stator and rotor coils being connected to a common terminal, the other lead of each of said coils being connected to a gap terminal, the gap terminals of said rotor coils being on the rotor and equal in number to the number of coils thereon and matching the positions of said rotor electromagnets thereon, the gap terminals of said stator being equal in number to the number of coils on the stator and disposed uniformly about said stator to match the positions of said stator electromagnets within said housing;
  • a first array of capacitors each having a terminal in common with the common coil terminal of said stator electromagnets, and each capacitor having its other terminal connected to a gap terminal arrayed adjacent the gap terminal of an electromagnet associated therewith;
  • a second array of capacitors, each having a terminal in common with said common terminal of said rotor electromagnet coils but equal in number to the number of capacitors in said stator array, the other terminals of said capacitors in said second array being connected to gap terminals arrayed about said housing so as to be in axial alignment with said stator gap terminal positions and being alignable with said rotor gap terminals as said rotor is rotated in said housing and respective gap terminals of said rotor coils pass each second array capacitor gap terminals at a predetermined gap distance;
  • gap coupling terminals on said rotor equal in number to the number of rotor electromagnet coils and positioned to match the rotor electromagnet positions on said rotor, the gap coupling terminals being rotatable with said rotor so as to pass said adjacent stator coil and associated stator capacitor gap terminal at a predetermined distance therefrom;
  • a plurality of capacitor charging circuits connected respectively across each of said capacitors in both said first and said second arrays of capacitors for charging each of said capacitors to a predetermined high d-c potential;
  • a first source of unidirectional electric potential connected to each of said capacitor charging circuits for energizing said charging circuits; and
  • a second unidirectional electric potential source connected to said electromagnets of said rotor and said stator of such polarity as to receive a charge from the inverse inductive discharge of the electromagnet coils as their fields collapse following the discharge of each capacitor through a rotor or stator electromagnet coil,
  • whereby whenever a rotor electromagnet is aligned opposite a stator electromagnet, the rotor coil gap terminal of that electromagnet is opposite an associated second capacitor array gap terminal, and a gap coupling terminal of said rotor is aligned opposite the stator electromagnet coil gap terminal and associated first capacitor gap terminal, the capacitors discharge the charge thereon across the gaps through their associated electromagnet coils to magnetize their respective juxtaposed electromagnet cores to cause them to repel one another, thus aligning a succeeding pair of rotor and stator electromagnets for capacitor discharge across their respective gaps, to cause them to repel one another, alignments rotor rotation within the housing continuously bringing successive rotor-stator electromagnets into alignment for discharge of the capacitors therethrough to produce rotary motion of the rotor on said rotor shaft continuously so long as energy from said first source of unidirectional electric potential is applied to said charging

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Description: Show description

Forward References: Show 10 U.S. patent(s) that reference this one

U.S. References: Go to Result Set: All U.S. references   |  Forward references (10)   |   Backward references (4)   |   Citation Link

Patent  Pub.Date  Inventor Assignee   Title
Get PDF - 5pp US2085708* 1937-06 Spencer    
Get PDF - 7pp US2800619* 1957-07 Brunt    
Get PDF - 12pp US3579074  1971-05 Roberts  Roberts; Ray R. ELECTRONIC POWERED PULSE AMPLIFIER
Get PDF - 5pp US3619638  1971-11 Phinney  The Bendix Corporation PULSE GENERATING APPARATUS
  * some details unavailable
Foreign References: None

Other References:
  • Frungel, High Speed Pulse Technology, Academic Press Inc., 1965, pp. 140-148.

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