Patents by Inventor Donald J. Acklam

Donald J. Acklam 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: 4568286
    Abstract: Flight Simulator feel apparatus suitable for use with an elevator control column and a rudder bar is provided by a variably tensioned cable subjected to transverse deflection by movement of the control column or rudder bar as the case may be, whereby a variable control stiffness (feel) is achieved in a simple and effective manner.
    Type: Grant
    Filed: October 3, 1984
    Date of Patent: February 4, 1986
    Assignee: British Aerospace Public Limited Company
    Inventor: Donald J. Acklam
  • Patent number: 4513235
    Abstract: Control apparatus of the kind disclosed in our U.K. patent application No. 2173887 wherein the `mover` or rotor of a linear or rotary electrical stepper motor is coupled to a manual operating member so that, not only can the motor drive the operating member to give an automatic mode of the apparatus, but can exert a controlled resistance to manual movement of the operating member thereby giving a degree of `feel` to the operator and/or one or more electrically generated discreet detent positions within the range of movement. Herein the apparatus incorporates an improvement whereby the movable operating member is pivotably mounted so that the manual movement is arcuate--flexible cables connected to the drive motor mover and/or control switches incorporated in the operating member can pass from the operating member to a fixed part of the apparatus at or near the pivotable mounting where the movement to be taken up is less.
    Type: Grant
    Filed: January 24, 1983
    Date of Patent: April 23, 1985
    Assignee: British Aerospace Public Limited Company
    Inventors: Donald J. Acklam, David Bird, Graham A. Hill