Patents by Inventor Hans Odsberg

Hans Odsberg 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).

  • Apparatus for prestressing casing bolts for steam and gas turbines
    Patent number: 5390569
    Abstract: A method for prestressing bolts arranged in places where lateral accessibility is reduced, particularly casing bolts for turbines, comprises the mounting of a bridge element (41) on the end faces of the threaded ends of support bolts (21, 23) positioned at either side of the bolt (22) selected for prestressing, and prestressing of the bolt (22) by means of hydraulic stressing means (42, 45) arranged at the bridge element (41). Also disclosed is an apparatus for carrying out the method according to the invention, the apparatus comprising a bridge element (41), a pulling sleeve (42) with hydraulic drive (45) arranged on the bridge element, and means for generation of hydraulic pressure. (FIG.
    Type: Grant
    Filed: January 27, 1994
    Date of Patent: February 21, 1995
    Assignee: Ovako Couplings AB
    Inventors: Hans Odsberg, Staffan Sundberg
  • Method for prestressing casingbolts
    Patent number: 5339512
    Abstract: A method for prestressing bolts arranged in places where lateral accessibility is reduced, particularly casing bolts for turbines, comprises the mounting of a bridge element (41) on the end faces of the threaded ends of support bolts (21, 23) positioned at either side of the bolt (22) selected for prestressing, and prestressing of the bolt (22) by means of hydraulic stressing means (42, 45) arranged at the bridge element (41). Also disclosed is an apparatus for carrying out the method according to the invention, the apparatus comprising a bridge element (41), a pulling sleeve (42) with hydraulic drive (45) arranged on the bridge element, and means for generation of hydraulic pressure.
    Type: Grant
    Filed: March 10, 1993
    Date of Patent: August 23, 1994
    Assignee: Ovako Couplings AB
    Inventors: Hans Odsberg, Staffan Sundberg