Patents by Inventor Raymond J. Brand

Raymond J. Brand 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).

  • Helicopter force feel actuator automatic static null compensation
    Patent number: 4382281
    Abstract: A bias voltage, which can be added to force commands applied to a helicopter control stick actuator, to compensate for static null offset errors, is generated as the average of the summation or integral of actuator pressure, or pressure differential, sensed while the force is moved from a first position which is halfway aft through null to a second position which is halfway forward and back through null to the first position, the pressure readings which are averaged being taken only through the central portion of the motion, the motion being controlled to be extremely slow compared to normal permissible stick motion.
    Type: Grant
    Filed: August 8, 1980
    Date of Patent: May 3, 1983
    Assignee: United Technologies Corporation
    Inventors: Donald W. Fowler, Raymond J. Brand, Douglas H. Clelford