Patents by Inventor Danilo P. Buan

Danilo P. Buan 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).

  • Pushbutton keyboard assembly with over center diaphragm contact
    Patent number: 3996428
    Abstract: A switch assembly having a plurality of movable elements for connection with underlying fixed contact elements carried by a base member, the movable insulative support sheet mounted on the base member. Each movable element is spaced by an electrically insulative sheet carried by the support sheet, and has a pair of opposed tines extending through the support sheet received in base member apertures. The movable elements may be dome shaped, partially cylindrical in shape, and span a plurality of the fixed contact elements.
    Type: Grant
    Filed: March 17, 1975
    Date of Patent: December 7, 1976
    Assignee: Litronix, Inc.
    Inventors: Danilo P. Buan, Richard F. Kingsbury