Patents by Inventor Kouji Umezawa

Kouji Umezawa 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).

  • Disc loading apparatus for use in a disc player
    Patent number: 4628498
    Abstract: A disc loading apparatus for use in a disc player comprises an arm device supported by a stationary structure to be movable for loading a disc carried to a predetermined position on a disc rotating device mounted on a chassis supported by a resilient supporting member engaging with the stationary structure and unloading the disc from the disc rotating device, first and second rollers for carrying the disc to the predetermined position, and a locking mechanism provided between the chassis and the stationary structure for locking the chassis to be substantially fixed to the stationary structure in response to the movement of the arm device for disc loading or disc unloading.
    Type: Grant
    Filed: April 30, 1985
    Date of Patent: December 9, 1986
    Assignee: Sony Corporation
    Inventors: Ryoji Takamatsu, Kouji Umezawa, Tsutomu Toyoguchi