Patents by Inventor Alfred Walter Weiler

Alfred Walter Weiler 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).

  • Draw roller for the transport of a material web, particularly a paper web in a web-fed printing machine
    Patent number: 5649890
    Abstract: The draw roller is designed as a suction roller with a rotatable roller casing having orifices, and the material web loops around the draw roller along a circumferential portion. The internal suction-air supply connectable to a negative-pressure source opens out on the inner circumference of the roller casing and is designed so that a stationary suction surface of wedge-shaped form is obtained on the casing circumference. The wedge tip is directed opposite to the direction of rotation of the roller casing and is located at the start of said circumference portion in the roller center. The suction surface widens obliquely outwards on both sides with an increasing looping angle and, at the end of the circumferential portion, has a width corresponding to the total width of the material web.
    Type: Grant
    Filed: May 2, 1995
    Date of Patent: July 22, 1997
    Assignee: De La Rue Giori, S.A.
    Inventors: Joachim Alfred Lapp, Alfred Walter Weiler