Patents by Inventor Eiji Yamazoe

Eiji Yamazoe 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 a surface-mountable switch having an opening completely sealed by a tape seal
    Patent number: 5996215
    Abstract: An opening which leads inside a surface-moutable switch is sealed by a tape seal, a good seal being maintained even when heat is applied to the switch. A switch body has a top surface and an inner space in which an electrical contact is provided. A switch knob operating the electrical contact provided inside the switch is accessed through the opening. The tape seal seals the opening with an adhesive applied between the tape seal and a top surface of a switch body. A portion of the tape seal directly above the opening is drawn into the opening by a negative pressure in the opening. The surface-mountable switch is manufactured by placing the switch body applied with the tape seal in a vacuum chamber so as to evacuate air surrounding the switch body. The seal for the opening is temporarily broken by an air pressure inside the opening, and the pressure inside the opening becomes a negative pressure with respect to the atmospheric pressure.
    Type: Grant
    Filed: October 1, 1997
    Date of Patent: December 7, 1999
    Assignee: Fujitsu Limited
    Inventors: Eiji Yamazoe, Hajime Okada