Patents by Inventor Harry I. Dunstan

Harry I. Dunstan 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: 5100352
    Abstract: A front-facing rowing arrangement for a boat includes a pair of oars of which includes a handle 1 and a blade 3 mounted for pivotal movement about spaced parallel axes on a supporting member 5 which is itself hingedly mounted for movement about a horizontal axis extending parallel to the direction of travel of the boat. The handle 1 and blade 3 of each oar are connected by a lever/linkage system which is such that the angular velocity of the blade relative to the angular velocity of the handle increases steadily throughout a typical power stroke.
    Type: Grant
    Filed: October 29, 1990
    Date of Patent: March 31, 1992
    Inventor: Harry I. Dunstan