Patents by Inventor Isadore Rudnick

Isadore Rudnick 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).

  • Acoustic driving of rotor
    Patent number: 4139806
    Abstract: Sound waves are utilized to apply torque to a body in an enclosure of square cross section, by driving two transducers located on perpendicular walls of an enclosure, at the same frequency but at a predetermined phase difference such as 90.degree.. The torque is a first order effect, so that large and controlled rotational speeds can be obtained.
    Type: Grant
    Filed: July 5, 1977
    Date of Patent: February 13, 1979
    Assignee: The United States of America as represented by the Administrator National Aeronautics & Space Administration
    Inventors: Hilda Kanber, Isadore Rudnick, Taylor G. Wang