Patents by Inventor MASATAKA AKATSUKA

MASATAKA AKATSUKA 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).

  • Speaker unit, electronic equipment and mobile object device
    Patent number: 10715897
    Abstract: A loudspeaker unit includes a frame, a diaphragm having an inner periphery and an outer periphery, and a magnetic circuit coupled to the frame. The frame includes a first support part, a second support part, a pedestal part, and a plurality of reinforcement parts. The first support part supports the outer periphery of the diaphragm, and the second support part supports the magnetic circuit. The pedestal part spreads outward from the outer periphery of the first support part. The plurality of reinforcement parts are disposed side by side along the periphery of the pedestal part and fixed to the outer periphery of the first support part and the pedestal part. Each of the plurality of reinforcement parts includes a first portion having a first height relative to the pedestal part, and a second portion having a second height lower than the first height.
    Type: Grant
    Filed: June 21, 2017
    Date of Patent: July 14, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Ryouichi Uemoto, Goro Tsuchiya, Masataka Akatsuka
  • SPEAKER UNIT, ELECTRONIC EQUIPMENT AND MOBILE OBJECT DEVICE
    Publication number: 20190335259
    Abstract: A loudspeaker unit includes a frame, a diaphragm having an inner periphery and an outer periphery, and a magnetic circuit coupled to the frame. The frame includes a first support part, a second support part, a pedestal part, and a plurality of reinforcement parts. The first support part supports the outer periphery of the diaphragm, and the second support part supports the magnetic circuit. The pedestal part spreads outward from the outer periphery of the first support part. The plurality of reinforcement parts are disposed side by side along the periphery of the pedestal part and fixed to the outer periphery of the first support part and the pedestal part. Each of the plurality of reinforcement parts includes a first portion having a first height relative to the pedestal part, and a second portion having a second height lower than the first height.
    Type: Application
    Filed: June 21, 2017
    Publication date: October 31, 2019
    Inventors: RYOUICHI UEMOTO, GORO TSUCHIYA, MASATAKA AKATSUKA