Patents by Inventor Takeziro Koguchi

Takeziro Koguchi 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).

  • Patent number: 4620249
    Abstract: An apparatus for driving a floppy disc includes a first sensor responsive to a magnetic disc encased in a jacket of the floppy disc. Before the magnetic disc is gripper in a predetermined position, a d.c. motor included in a disc rotating mechanism is started in order to prevent rush current therethrough. After the start of the d.c. motor, a second sensor senses a return of the magnetic disc to a predetermined regular position whereupon a cone load drive source is activated to automatically move a cone toward a drive hub. Thus, the magnetic disc can be gripped and set in the regular position merely by inserting it into the apparatus. The apparatus also includes ejection apparatus for ejecting the floppy disc.
    Type: Grant
    Filed: April 19, 1982
    Date of Patent: October 28, 1986
    Assignee: Ricoh Company, Ltd.
    Inventors: Masayuki Suzaki, Tetsuro Hirota, Tetsuo Kanno, Takeziro Koguchi