Patents by Inventor Jens Hamberg

Jens Hamberg 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).

  • Helix drill having coolant channels and helical chip flutes
    Patent number: 5947653
    Abstract: A helix drill for metal chip removing machining includes a shank which defines a longitudinal rotary axis and has front and rear ends. The front end carries two cutting edges. Two chip flutes are formed in an outer periphery of the shank and extend helically rearwardly from respective cutting edges for conducting chips. Two coolant channels extend within the shank for conducting cooling fluid. A major part of the length of each cooling channel is straight and oriented parallel to the axis. A total helical twist of each of the chip flutes along the length of the shank is about 30.degree..
    Type: Grant
    Filed: April 27, 1998
    Date of Patent: September 7, 1999
    Assignee: Seco Tools AB
    Inventor: Jens Hamberg