Patents by Inventor Friedrich Wotzka

Friedrich Wotzka 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: 5452081
    Abstract: Visual inspection device for inspecting the finish on manufactured goods. A plurality of samples are joined together in a substantially flat, substantially disk-like shape for easy viewing. The device includes a viewing hole in the center so that the surface being inspected can be viewed both through the hole and on the outside of the device, thus making comparisons by eye more accurate. The device optionally includes radial slots so that multiple devices can be fastened together or a device can be fastened to another object.
    Type: Grant
    Filed: October 12, 1994
    Date of Patent: September 19, 1995
    Assignee: International Business Machines Corporation
    Inventors: Friedrich Wotzka, Richard C. Bartell
  • Patent number: 5026975
    Abstract: The invention provides an arrangement for scanning bar codes applied to articles, such as UPC or EAN codes of goods in a supermarket cashier stand. A laser scanner is provided with a window through which the scanning rays exit before they impinge on a scanning area (11). The laser scanner (4) is arranged at the side of the transport flow and with its window (5) tilted to the rear and being above the transport plane (6). The different rays (20-23, 25-25c, 26-26c, 30a-30f, 31a-31f) of the cluster of scanning rays of scanner (4) are oriented such that they are concentrated and focused mainly on the scanning area (11) in front of the window (5), that they do not leave the transport plane (6) immediately opposite the window, and that generally a ray-free area is formed there where at least head and chest of an operating cashier (1) that sits opposite to the scanner (4) with its window ( 5), is situated.
    Type: Grant
    Filed: February 17, 1989
    Date of Patent: June 25, 1991
    Assignee: International Business Machines Corporation
    Inventors: Wolfgang Guber, Juergen Scheffel, Friedrich Wotzka
  • Patent number: D345549
    Type: Grant
    Filed: October 9, 1991
    Date of Patent: March 29, 1994
    Assignee: International Business Machines Corporation
    Inventors: Wolfgang Guber, Friedrich Wotzka