Patents by Inventor Takagi Takahiro

Takagi Takahiro has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Reciprocating vibration generator
    Patent number: 8519573
    Abstract: A reciprocating vibration generator making the magnetic circuit of a permanent magnet a closed loop so as to obtain a high vibration force, specifically a vibration linear actuator having a ring-shaped weight, a reciprocating vibrator having a ring-shaped permanent magnet in a center hole of the weight, a first plate spring and a second plate spring supporting this reciprocating vibrator with respect to a recessed case and an end plate to be able to elastically displace in a thickness direction between a first end face and a second end face, a tube-shaped toroidal coil running through a center hole of the ring-shaped permanent magnet and generating a reciprocating vibration magnetic field for driving the ring-shaped permanent magnet to reciprocate in the thickness direction, and a columnar core running through the inside of this toroidal coil, wherein the ring-shaped permanent magnet is magnetized in the thickness direction, and the toroidal coil has a lower stage toroidal coil and an upper stage toroidal coi
    Type: Grant
    Filed: February 7, 2011
    Date of Patent: August 27, 2013
    Assignee: Nidec Seimitsu Corporation
    Inventors: Furuich Keisuke, Takagi Takahiro
  • RECIROCATING VIBRATION GENERATOR
    Publication number: 20110198948
    Abstract: A reciprocating vibration generator making the magnetic circuit of a permanent magnet a closed loop so as to obtain a high vibration force, specifically a vibration linear actuator having a ring-shaped weight, a reciprocating vibrator having a ring-shaped permanent magnet in a center hole of the weight, a first plate spring and a second plate spring supporting this reciprocating vibrator with respect to a recessed case and an end plate to be able to elastically displace in a thickness direction between a first end face and a second end face, a tube-shaped toroidal coil running through a center hole of the ring-shaped permanent magnet and generating a reciprocating vibration magnetic field for driving the ring-shaped permanent magnet to reciprocate in the thickness direction, and a columnar core running through the inside of this toroidal coil, wherein the ring-shaped permanent magnet is magnetized in the thickness direction, and the toroidal coil has a lower stage toroidal coil and an upper stage toroidal coi
    Type: Application
    Filed: February 7, 2011
    Publication date: August 18, 2011
    Applicants: SANYO ELECTRIC CO., LTD., SANYO SEIMITSU CO., LTD.
    Inventors: Furuich Keisuke, Takagi Takahiro