Patents by Inventor Roy E. P. Andersson

Roy E. P. Andersson 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: 4210290
    Abstract: In the operation of a grinding plant, including a motor-driven rod mill and an arrangement for controllably supplying material to be ground to the rod mill, the supply of material to the mill is adjusted in a manner such that the power consumption of the mill motor is maintained substantially constant at a value which exceeds the power consumption of the mill motor at the occurrence of a rod-jam by approximately 0.5-2%.
    Type: Grant
    Filed: September 7, 1978
    Date of Patent: July 1, 1980
    Assignee: Boliden Aktiebolag
    Inventors: Roy E. P. Andersson, Jan A. Bohm