Patents by Inventor Richard E. Niggermann

Richard E. Niggermann 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: 4825899
    Abstract: A fluid monitoring and control system for use with such electromechanical apparatus as integrated drive generators, or the like, which include a casing and a rotatable shaft extending into the casing. A rotatable chamber is connected to the shaft for rotation thereby and for converting the volume of liquid in the chamber into a centrifugal liquid pressure head in response to rotation of the chamber. A pump scavenges liquid from the casing and delivers the scavenged liquid to the rotatable chamber. An accumulator is hydraulically coupled to the rotatable chamber for receiving liquid therefrom when the liquid level reaches a predetermined maximum level. the accumulator supplies liquid therefrom to the casing, through the rotatable chamber, when the liquid level reaches a predetermined minimum level.
    Type: Grant
    Filed: December 22, 1986
    Date of Patent: May 2, 1989
    Assignee: Sundstrand Corporation
    Inventor: Richard E. Niggermann