Patents by Inventor Robert Perper

Robert Perper 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).

  • Hydroelectric plant
    Patent number: 4941771
    Abstract: A hydroelectric system is disclosed which is designed to run intermittently to compensate for a low flow source. A float system is employed to control the operating points of the turbine by opening an inlet valve at one predetermined pond level and closing the inlet valve at a lower predetermined level. A novel entrance to the turbine inlet pipe is also disclosed which eliminates problem turbulence when the pond level is near the lower predetermined limit.
    Type: Grant
    Filed: September 6, 1989
    Date of Patent: July 17, 1990
    Inventor: Robert Perper