Patents by Inventor Naotaka Hamada

Naotaka Hamada 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: 4950845
    Abstract: A switching device is disclosed in which a depression switch and a rotation/depression switch are interconnected by means of a coupling mechanism. When one of the knobs is turned ON, the remaining knob is automatically turned OFF. The switching device includes a depression knob projecting from a plate and disposed depressingly manipulatable; the depression switch for performing a predetermined switching operation in response to depressing operation of the depression knob; a rotation/depression knob provided on the plate and disposed rotatable and depressingly operable; the rotation/depression switch for performing a predetermined switching operation in cooperation with rotation or depressing movement of the rotation/depression knob; and, a coupling mechanism provided between the depression switch and the rotation/depression switch. The coupling mechanism releases a contact of one of the switches in response to ON operation of remaining one of the switch.
    Type: Grant
    Filed: January 4, 1989
    Date of Patent: August 21, 1990
    Assignee: Kojima Press Industry Co., Ltd.
    Inventors: Katsuya Kuroyanagi, Kazuhiro Kimura, Yoshitaka Itakura, Naotaka Hamada, Hiroyuki Mori