Patents by Inventor Leonard Meyerhoff

Leonard Meyerhoff 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).

  • Cavitation suppressing ducted propeller system
    Patent number: 5597245
    Abstract: This invention relates to a device for use with a ducted propeller system r suppressing gap cavitation between a moving rotor tip and duct wall and more particularly to means for supplying fluid to a ducted propeller whereby cavitation or the noise resulting therefrom may be eliminated.
    Type: Grant
    Filed: August 13, 1962
    Date of Patent: January 28, 1997
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Leonard Meyerhoff
  • Fixed geometry water jet inlet for a surface effect ship
    Patent number: 4176613
    Abstract: A water jet inlet as used in a surface effect ship, cavitation free environment is provided of a fixed round or rectangular inlet geometry, within the confines of inlet velocity ratios pertaining to the ship velocity immersion design profile. An additional embodiment is disclosed that enables the instant invention to operate at a range of drop fractions, including negative drop fractions, and allows for a truly flush inlet, resulting in minimizing the drag of the ship and potential ingestion of large floating debris.
    Type: Grant
    Filed: November 25, 1977
    Date of Patent: December 4, 1979
    Assignee: Rohr Industries, Inc.
    Inventors: Michael A. Rickards, Richard K. Ruhe, Leonard Meyerhoff, James M. Hook
  • Ship propeller duct
    Patent number: D242616
    Type: Grant
    Filed: August 31, 1973
    Date of Patent: December 7, 1976
    Inventors: Leonard Meyerhoff, Stanley A. Meyerhoff