Patents by Inventor Douglas E. Roskelley

Douglas E. Roskelley 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: 5170742
    Abstract: The davit 10 has an arm structure 16 with an indentation 44 therein within which it "hugs" the object 14 suspended from the same so as to reduce the objects's dynamicism on the mother vessel 2 when the vessel is underway and reacting to the water. This follows from the fact that in the relatively retracted position of the arm structure (FIGS. 1 and 2), wherein the object is stored until there is a need for it, the recess 48 of the indentation is disposed substantially entirely on the relatively inboard side of the vertical plane of the horizontal axis 40 about which the arm structure is pivotally mounted, and the object is suspended from the arm structure so that the relatively inboard side 24 of the object crosses the vertical plane of the axis and advances within the recess to locate the center of gravity of the object in more of a dead center relationship with that of the davit.
    Type: Grant
    Filed: April 1, 1992
    Date of Patent: December 15, 1992
    Assignee: Samuel F. Olsson
    Inventor: Douglas E. Roskelley