Patents by Inventor Hjalmar Paulsson

Hjalmar Paulsson 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).

  • Patent number: 4475758
    Abstract: A lifting fork intended to be suspended from a lifting member, e.g. a lifting hook (4) of a hoisting crane, and which includes forks (2), a lifting shank (3) to which a movable attachment (7,11,14) for the lifting hook (4) is attached, and a connecting bar (5) extending between the forks and the lifting shank. In order to facilitate the withdrawal of the forks (2) from the load the point of action of the lifting force at the lifting fork by moving the attachment (7,11,14) is movable from the position at the lifting shank (3) to a position close to the rear end of the forks (2). This can be achieved in many ways, i.e. by means of the attachment (7,11,14) being displaceable from the lifting shank (3) down along the connecting bar (5) or by the connecting bar (5) or a part thereof possibly together with the lifting shank being pivotable backwards - downwards.
    Type: Grant
    Filed: April 27, 1982
    Date of Patent: October 9, 1984
    Inventor: Hjalmar Paulsson