Patents by Inventor Wilfried Sackmann

Wilfried Sackmann 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 and a device for drilling with several tools in simultaneous operation
    Patent number: 4079795
    Abstract: A method for drilling boreholes utilizing a plurality of simultaneously operated boring tools. During a drilling operation the loading forces on the tools are measured and constantly compared with a predetermined limiting value representative of a limiting loading value and the variation of a limiting loading value with respect to time. If these limiting values are exceeded at least one working parameter of the tools is adjusted such as feed force, feed speed or track speed of the tools. Apparatus for carrying out the method is also disclosed.
    Type: Grant
    Filed: January 26, 1976
    Date of Patent: March 21, 1978
    Assignee: Maschinen-und Bohrgerate-Fabrik Alfred Wirth & Co., K.G.
    Inventors: Wilfried Sackmann, Georg Hurtz, Fritz Tibussek