Patents by Inventor Robert L. Hartung

Robert L. Hartung 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: 4821216
    Abstract: An indicator monitor which performs a plurality of functions. Both engine exhaust gas temperature and engine rpm are monitored. Based on the engine rpm, it is determined whether the engine is in starting or operating condition. Different parameters and different values are used based on this indication. A plurality of different functions including parameters indicative of temperature in rpm can be monitored by this one meter with a single display and which has electronics that can be housed in an area smaller than the display face.
    Type: Grant
    Filed: April 10, 1987
    Date of Patent: April 11, 1989
    Assignee: Howell Instruments, Inc.
    Inventors: John S. Howell, Robert L. Hartung
  • Patent number: 4031366
    Abstract: An electrical input signal representative of the existing operating state of a rotating bladed disk or other rotating member is classified into one of a plurality of predetermined operating states and a sequence detector is employed for detecting the occurrence of one of a plurality of possible predetermined sequences of such operating states. Predetermined fixed damage coefficients are then correlated with respectively corresponding detected predetermined sequences of operating states and accumulated with other similarly selected damage coefficients so as to provide a cumulative indication of low cycle fatigue damage done to the rotating member over its past history of experienced operating state sequences.
    Type: Grant
    Filed: October 30, 1975
    Date of Patent: June 21, 1977
    Assignee: Howell Instruments, Inc.
    Inventor: Robert L. Hartung