Patents by Inventor Seth Leroy Everett, Jr.

Seth Leroy Everett, Jr. 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).

  • Keyboard switch assembly with tactile feedback having illuminated laminated layers including opaque or transparent conductive layer
    Patent number: 4060703
    Abstract: A sandwich type computer keyboard with keys characterized by a tactility to provide a positive degree of tactile feedback to an operator and having an electroluminescent panel for illuminating the keyboard panel.
    Type: Grant
    Filed: November 10, 1976
    Date of Patent: November 29, 1977
    Inventor: Seth Leroy Everett, Jr.
  • Sealed cassette for optical sound projection
    Patent number: 4005931
    Abstract: A film projector system including a sealed film cassette removably mounted ithin an aperture in the projector and driving means in said projector mechanically engaging coupling means extending through said cassette for driving the sealed film between hubs sealed in said cassette intermittently past a film projection location gate in said cassette and continuously past a sound detection location therein, with the projection plane of the film at said projector locations being disposed normal to the projector optical projection optical sound beams and twisted ninety degrees with respect to the plane of that portion of the film wound on said hubs so that the projector beams do not pass between the film hubs.
    Type: Grant
    Filed: January 15, 1974
    Date of Patent: February 1, 1977
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Seth Leroy Everett, Jr.