| 摘要 |
1,210,668. Printed circuits. MATSUSHITA ELECTRIC INDUSTRIAL CO. Ltd. 21 Nov., 1967 [8 Dec., 1966 (2)], No. 52993/67. Heading H1K. [Also in Division H2] A commutator motor printed winding rotor. has printed on one insulating surface of a discoidal base-plate 5 multi-layer finding conductors comprising a first layer 6, a first insulating film 7 formed on the layer 6 but leaving a portion thereof exposed, a second layer 8 printed on the film 7 and the first layer exposed portion thereby electrically connecting together the two layers, and a second insulating film 9 formed on the second layer 8 and so offset from the first film 7 as to provide an insulation between the layers yet leave a portion of the second layer 8 exposed. Further layers 10, 12 and films 11 are superposed in similar radially staggered relationship, and the portions 6 of the first layer form a commutator which may be silver or rhodium plated. Instead of the lag pattern shown the winding may be of wave or concentric pattern. The conductors may be printed by a metal powder method alone, or in combination with an electroplating method. |
