Patents by Inventor Carl J. Lindegren, III

Carl J. Lindegren, III 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).

  • Position-controlled actuator
    Patent number: 5271313
    Abstract: A position-controlled actuator including a double acting pneumatic actuator, a selector valve which causes function of the actuator, a comparator which controls the action of the selector valve in response to a comparison between an input signal and a signal indicative of the position of the actuator, and a feedback link which provides the comparator with a signal indicative of the position of the actuator. The actuator would have oscillation damping seals such as seals of VITON brand fluorocarbon rubber.
    Type: Grant
    Filed: November 12, 1991
    Date of Patent: December 21, 1993
    Inventor: Carl J. Lindegren, III