Patents Assigned to Russkraft, Inc.
  • Patent number: 4097084
    Abstract: A lifting grab is designed to enter restricted areas close to the circumferential diameter of a cylindrical object resting on its bottom such as a pipe or torpedo and to engage a position grasping the object on its circumferential outer surface below its horizontal diameter for lifting the object upwardly. The grab has pivoted hook and clamp members closely surrounding the outer circumference of the object about an arc greater than half the circumferential span, with the clamp member terminating in a lifting shackle. Provision is made for locking the clamp in grasping position and to lift the grab along its center of gravity in both opened mounting and closed grasp positions. The cylindrical object is grasped by pivoted swivel pad members mating with the cylindrical surface and mounted near the lower ends of the clamp and hook members.
    Type: Grant
    Filed: March 18, 1977
    Date of Patent: June 27, 1978
    Assignee: Russkraft, Inc.
    Inventor: John S. Russell