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Electromagnetic machines

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专利名称:Electromagnetic machines发明人:POLGREEN GEOFFREY RICHARD申请号:US276763申请日:19630508公开号:US3293470A公开日:19661220

摘要:1,037,416. Homopolar dynamo-electric machines. G. R. POLGREEN. May 3, 1963[May 9, 1962], No. 177/62. Heading H2A. A homopolar dynamo-electric machine, e.g.motor or generator embodies ferrite permanent magnets. In the motor shown, the rotor10 comprises one or more pairs of conducting, e.g. nickel plated aluminium, radiallyslotted discs 12 either integral with or bolted to hubs 13 carried by a steel shaft 14,insulated therefrom by anodizing, and fixed thereto by insulating keys. Each disc issurrounded by an axially magnetized annular oriented, barium or other ferrite permanentmagnet 20 having clamped to its opposite polar faces two steel pole plates 21 definingpartly a space 21a accommodating a current collector or brush 22 such as a liquidconductor, e.g. mercury, sodium-potassium, or colloidal graphite maintained in the spaceby dynamic seals 23, or a plurality of leaf springs of, e.g. beryllium copper or phosphorbronze, or a brass backing ring faced with a high temperature grade of foam rubbertoroidally wound with a phosphor bronze strip. The individual collectors are connected inseries, and the outermost ones contact conducting terminal bolts 34 insulated fromaluminium end plates 30 clamped together by nuts 33 on aluminium rods 34. Aperforated housing 35 surrounds the stator 11. The machine may drive and

regeneratively brake a motor car, or generate low voltage D.C. when driven by a gas

turbine.

申请人:RICHARD POLGREEN GEOFFREY

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