Patents Assigned to Firma Botek Praezisions-Bohrtechnik Schur & Co.
  • Boring device
    Patent number: 4100983
    Abstract: A boring device adapted for deep well drilling wherein a cutting plate is fixed in operative position in a recess of a boring head by means of a clamping bolt. The cutting plate is reversible and its position in the boring head is adapted to be adjusted in a substantially radial direction. The cutting plate has a serrated surface and the bottom of the recess has a matingly serrated surface which when contacting each other enhance the clamping action of the clamping bolt.
    Type: Grant
    Filed: May 10, 1976
    Date of Patent: July 18, 1978
    Assignee: Firma Botek Praezisions-Bohrtechnik Schur & Co.
    Inventors: Lothar Herrmann, Gotthold Schur