Patents by Inventor Hideji Tugui

Hideji Tugui 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).

  • Method of manufacturing fluid pressure sensor
    Patent number: 4947544
    Abstract: A pressure receiving member which has a diaphragm held in a pressure receiving case is manufactured independently of a main sensor body member, which has a switch accommodated in a switch case. The pressure receiving member and the main sensor body member are then assembled to provide a pressure sensor. According to the present invention, since the pressure receiving portion and the main sensor body are manufactured individually, a diaphragm movement test can be carried out individually of the testing of switch turning on and off, and hence only a satisfactory pressure receiving portion and a main sensor body which passed the respective tests will be utilized in the operation of assembling pressure sensors.
    Type: Grant
    Filed: March 22, 1989
    Date of Patent: August 14, 1990
    Assignee: Ormon Tateisi Electronics Co.
    Inventors: Norio Iwakiri, Hideyuki Bingo, Hideji Tugui