Patents by Inventor Karl B. Isaksson

Karl B. Isaksson 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).

  • Drill for generating of holes in a work piece
    Patent number: 4712952
    Abstract: The invention relates to a drill for generating of holes in a work piece, preferably in a composite material. The drill comprises a cylindrical shank portion, two cutting portions projecting in the axial and radial direction of the drill and two chip gullets. The cutting portions are arranged symmetrically about the center axis of the drill and each comprising a cutting tip, a minor cutting edge and a free-cutting edge. The cutting portions are shaped such that they require a small feed force in order to drill in the work piece.
    Type: Grant
    Filed: March 4, 1986
    Date of Patent: December 15, 1987
    Assignee: Santrade Limited
    Inventors: Karl B. Isaksson, Bror G. K. Svahn
  • Drill for generating a hole in a work piece
    Patent number: 4669931
    Abstract: A drill for drilling of work pieces, preferably of composite materials, comprising a cylindrical shank portion (11), a first cutting edge (13) in form of an arc of a circle arranged in the cutting end of the drill and a second cutting edge (16) perpendicularly connected thereto. The edges (13,16) are preceded in the rotational direction by a third cutting edge (14) which during the drilling cuts away the material radially inside a circular groove which is cut by the first and the second cutting edges (13,16).
    Type: Grant
    Filed: April 3, 1985
    Date of Patent: June 2, 1987
    Assignee: Santrade Limited
    Inventor: Karl B. Isaksson