Patents by Inventor Per Bejerstål

Per Bejerstål 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: 6540449
    Abstract: A rotatable tool for chip removing machining includes a shaft and a cutting body connected detachably to the shaft by a drawbar. At its front end the drawbar has a locking device for effecting mechanical engagement with the cutting body. The drawbar is axially movable by an actuating element located at a distance from the locking device. Inside the cutting body there is a cavity, which communicates with an opening in a rear part of the cutting body. The opening has a smaller width than the cavity, and the locking device has a larger width than the opening in order to be able to be pressed against an interior rear surface of the cavity of the cutting body after the locking device is inserted into in the cavity.
    Type: Grant
    Filed: October 26, 2000
    Date of Patent: April 1, 2003
    Assignee: Sandvik Aktiebolag
    Inventors: Per Bejerstål, Sven-Erik Carlsson