Motor Stator Or Core For Winding Patents (Class 427/104)
  • Method of manufacturing an electrically insulated coil
    Patent number: 3991232
    Abstract: A method of manufacturing an electrically insulated coil having excellent insulation characteristics and high reliability using a vacuum-pressure impregnation process comprises the step of selectively effectively combining epoxy resins, curing agents and curing accelerators employed as a mica bonding agent and an impregnant.
    Type: Grant
    Filed: March 11, 1975
    Date of Patent: November 9, 1976
    Assignee: Tokyo Shibaura Electric Co., Ltd.
    Inventors: Junichi Kamiuchi, Taichi Takechi, Hisayasu Mitsui, Ryozi Kumazawa, Kimikazu Umemoto, Toshimitsu Yamada
  • Polyester fiber-vacuum impregnated epoxy resin insulation system for high voltage transformers
    Patent number: 3979530
    Abstract: A new insulation system, useful for the fabrication of high voltage transformers, capacitors and power supply encapsulation and insulation for high voltage leads, has been developed which substantially eliminates corona and improves reliability of these devices.
    Type: Grant
    Filed: April 15, 1974
    Date of Patent: September 7, 1976
    Assignee: Hughes Aircraft Company
    Inventors: Alfred W. Schwider, John Burnham, Robert S. Buritz
  • Production of carbon lining for reduction cells
    Patent number: 3932244
    Abstract: In making carbon bodies for lining aluminum reduction cells, an aggregate including carbon recovered from used linings of such cells is mixed with binder material incorporating an alkaline-catalyzable furan binder. Residual contaminant material in the recovered carbon acts as a catalyst for the furan binder, so that the binder-aggregate mixture constitutes a self-hardening carbon lining body.
    Type: Grant
    Filed: December 19, 1973
    Date of Patent: January 13, 1976
    Assignee: Alcan Research and Development Limited
    Inventor: Anfinnur Mikkelsen