Patents Assigned to Toroku Pioneer Corporation
  • Patent number: 7331420
    Abstract: A frame for a speaker device includes a magnetic circuit housing unit which houses a magnetic circuit, a substantially annular outer peripheral portion which is arranged on an outer side of the magnetic circuit housing unit, and plural arm portions which connect the magnetic circuit housing unit and the outer peripheral portion. Each of the plural arm portions has a sectional shape of a one-open-end shape having a connected end and an open end, and the plural arm portions include an arm portion having the open end oriented to one direction and an arm portion having the open end oriented to a direction opposite to the one direction.
    Type: Grant
    Filed: February 16, 2006
    Date of Patent: February 19, 2008
    Assignees: Pioneer Corporation, Toroku Pioneer Corporation, Honda Motor Co., Ltd.
    Inventors: Hiromitsu Sasaki, Yutaka Moriyama, Eiji Sakaguchi, Hidehito Oki