Patents by Inventor Johan Gullander

Johan Gullander 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 device for controlling a crusher, and a pointer instrument for indication of load on a crusher
    Patent number: 7591437
    Abstract: A crusher has first and second crushing elements spaced apart to form a crushing gap therebetween. A measuring device is arranged to measure the instantaneous load on the crusher during at least one period to obtain a number of measured values. A calculation device is arranged to calculate a representative load value that is representative of the highest, measured instantaneous load during each such period of time. A control device is arranged to compare the representative load value with a desired value and to control the load on the crusher depending on the comparison.
    Type: Grant
    Filed: February 9, 2004
    Date of Patent: September 22, 2009
    Assignee: Sandvik Intellectual Property AB
    Inventors: Anders Nilsson, Johan Gullander, Kjell-Åke Svensson, Kent Nilsson, Mattias Nilsson