Patents Assigned to SPC Electronics Corp.
  • Patent number: 5690851
    Abstract: A drink can induction heating apparatus includes a ferrite core having a plurality of projected portions and recesses formed between the adjacent projected portions. When a drink can is set in a position to be heated, each of the projected portions is oriented toward a longitudinal axis of the drink can and a particular portion of a circumferential wall of the drink can. The apparatus further includes a saddle-shaped heating coil which is partly received in the recesses of the ferrite core and covers a region around the foregoing particular portions of the drink can in a non-contact manner, and an inverter for feeding the AC power to the heating coil. The inverter is arranged to produce the AC power at a resonance frequency which corresponds to one of 5 kHz to 15 kHz where equivalent resistance values of an aluminum can and a steel can approximate to each other.
    Type: Grant
    Filed: October 4, 1995
    Date of Patent: November 25, 1997
    Assignees: SPC Electronics Corp., Daiwa Can Co.
    Inventors: Tsuyoshi Yoshioka, Masami Matsunaga, Tetsuya Takatomi, Hideo Kanai, Tsutomu Ishima