Patents by Inventor Constantine Tsoucalas

Constantine Tsoucalas 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: 4780977
    Abstract: Apparatus is disclosed which is operable for turning a page of a book, or other like reading material, and for retaining said page in a turned position. The page is turned via a vacuum arrangement which draws a single page away from the rest of the pages and an arm which is disposed in back of the single page and is displaced to turn said page from right to left. The page is retained in the turned position by means synchronously operataed with the page turning arrangement and including an arm which rests on the turned page to prevent said page from returning to the unturned page position.
    Type: Grant
    Filed: September 8, 1987
    Date of Patent: November 1, 1988
    Assignee: Maddak, Inc.
    Inventors: James M. Howard, Constantine Tsoucalas