Patents Assigned to Hymo AB
  • Patent number: 4753419
    Abstract: The present invention relates to an arrangement for a hydraulic lifting table of the scissor type with at least two pairs of scissor arms (1, 2) pivotally attached to one another. These are attached at their ends to a lower frame section (3) and an upper table section (4) in such a way as to be capable of pivoting and rolling. The arrangement also comprises a centrally positioned power transmission arrangement pivotally attached to the frame section, being preferably a hydraulic cylinder, the piston rod (8) of which is so arranged as to engage via rollers (9) with guide curves (10, 11). One (10) of these is attached to the frame section (3), and the other (11) is operatively connected to a pair of scissor arms (1). The guide curves (10, 11) are moved towards and away from one another by the rollers (9) for the purpose of raising the lifting table and vice versa.
    Type: Grant
    Filed: November 24, 1986
    Date of Patent: June 28, 1988
    Assignee: Hymo AB
    Inventor: Lars Johansson