Patents Represented by Attorney Jr. August E. Roehrig

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  • Hatch cover crane
    Patent number: 4238036
    Abstract: A hatch cover crane having a hydraulically actuated jack assembly for realigning a hatch cover carried by the hatch cover crane with a ship's cargo hold opening. The jack is extended downward onto one of a pair of support rails, over which the hatch cover crane is moved, to raise one end of the hatch cover crane off the rails. While one end of the crane is raised off the rails, an opposite end is freely driven to facilitate alignment of the hatch cover carried by the hatch cover crane with the cargo hold opening.
    Type: Grant
    Filed: October 23, 1978
    Date of Patent: December 9, 1980
    Assignee: Marine Travelift, Inc.
    Inventors: Gerald P. Lamer, Arnold Petersen, Norbert W. Lenius