Patents by Inventor Henry Marschewski

Henry Marschewski 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).

  • Ring segment ship hull
    Patent number: 4638753
    Abstract: A ship hull design has circular arc frame lines of equal radius at stations 11-16 symmetrical fore and aft from a similar frame line at a central station 10, and a circular arc keel line 17 of larger radius. The submerged hull configuration is thus similar to a segment of a toroid having a circular cross-section, to minimize rolling and pitching movements in a seaway and reduce hull resistance.
    Type: Grant
    Filed: January 8, 1985
    Date of Patent: January 27, 1987
    Inventor: Henry Marschewski