Patents by Inventor Frans J. Tieman

Frans J. Tieman 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 adjusting a piezo-electric bending element
    Patent number: 5426837
    Abstract: The invention relates to a method of adjusting, in the course of applying predetermined voltages, an oblong piezo-electric bending element which at a first end has been supported by a part protruding in the longitudinal direction of the element, whereby this part is mechanically bent and consists of a material in which at least part of the bending deformation is permanent. In addition, the invention comprises a piezo-electric bending element as has been constructed by applying the method and tools for the application of the method.
    Type: Grant
    Filed: July 13, 1993
    Date of Patent: June 27, 1995
    Assignee: F. J. Tieman B.V.
    Inventor: Frans J. Tieman
  • Tactile relief display device and method for manufacture it
    Patent number: 4758165
    Abstract: A braille cell having piezoelectric reeds (8-11) attached at one end (28), supported in their middle region (at 29) and cooperating with tactile members (12-15) at their other end. The attachment of the reeds at their one end (28) being by soldering a protruding part of the reeds to a conducting web (32) parallel to the flexion plane of the reeds. The other ends of the reeds are then located in the desired position with respect to the tactile members.
    Type: Grant
    Filed: February 13, 1987
    Date of Patent: July 19, 1988
    Assignee: F. J. Tieman B.V.
    Inventors: Frans J. Tieman, Kees Zeehuisen