Patents by Inventor Bohyun Yim

Bohyun Yim 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).

  • Transcavitating propeller
    Patent number: 4293280
    Abstract: A propeller blade for a multi-bladed propeller comprises a radial inner pion, a radially outer portion and a transition portion extending therebetween. Generally, the leading edge of the blade portions are colinear and the trailing edges of the inner and outer blade portions are offset from each other so that shoulders are defined on the transition portion and the outer blade portion has a higher blade angle of attack than the inner blade portion. The shoulders extend from the leading edge to the trailing edge of the transition for providing flow stability and blade reinforcement.
    Type: Grant
    Filed: August 27, 1980
    Date of Patent: October 6, 1981
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Bohyun Yim