Patents by Inventor Fredik Persson

Fredik Persson 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).

  • Manipulator
    Patent number: 6577093
    Abstract: A manipulator for an environment with hygienic requirements, comprising a stationary element (1) with a plurality of drive means (2), and arms (3) attached to the drive means, which arms, via a respective linkage (4), support a movable element (5). The drive means (2) are enclosed in an enclosure (6) which encloses a gaseous coolant which, by a forced flow, takes up heat from the motors of the drive means.
    Type: Grant
    Filed: June 25, 2001
    Date of Patent: June 10, 2003
    Assignee: ABB AB
    Inventors: Hakan Hvittfeldt, Jan Larsson, Pierre Mikaelsson, Fredik Persson
  • Manipulator and method for manufacturing the manipulator
    Patent number: 6419211
    Abstract: A manipulator comprising a linkage with at least two links (1, 4) which have ball joints (3, 6) at their ends, and a spring device (10) which exerts a tensile force between the links. The spring device (10) comprises a first drawing device (11) with a first angle device (18), a second drawing device (12) with a second angle device (19), which are arranged, displaceable in parallel, side-by-side, and a spring member (13) arranged between the angle devices. The tensile force arises by the spring member exerting a compressive force against the angle devices.
    Type: Grant
    Filed: June 20, 2001
    Date of Patent: July 16, 2002
    Assignee: ABB AB
    Inventors: Hakan Hvittfeldt, Jan Larsson, Pierre Mikaelsson, Fredik Persson