Patents by Inventor Erik T. Brask

Erik T. Brask 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).

  • Rotary drill bit
    Patent number: 4427307
    Abstract: A rotary drill bit comprising a roller cutter (12) which is rotatably carried over a bearing system. The bearing system comprises at least one roller bearing (16). Fluid is supplied to the bearing system for flushing and lubricating and when needed cooling thereof. For purposes of ensuring suitable fluid flow through the roller bearing (16) and thus ensuring satisfactory lubrication thereof the rollers in the roller bearing (16) are provided with an axial bore (25).
    Type: Grant
    Filed: October 5, 1981
    Date of Patent: January 24, 1984
    Assignees: Sandvik Aktiebolag, Aktiebolaget SKF
    Inventors: Lars G. Norlander, Erik T. Brask, Rolf R. Moren