Patents by Inventor Malcolm Tierney

Malcolm Tierney 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).

  • Electrical actuator incorporating a free play mechanism to eliminate force fighting
    Patent number: 9004401
    Abstract: An actuator which is operable in response to one of an electrical and an electro-mechanical input signal is provided. The actuator includes an outer casing defined about a central axis, an output shaft disposed within the casing, the output shaft being axially moveable over a stroke length. Further, the actuator also includes a drive mechanism co-operable with the output shaft to drive the output shaft along a part of the stroke length, wherein the actuator is configured such that the output shaft is drivable along all or part of the remainder of the stroke length by external loading while being unconstrained by the drive mechanism.
    Type: Grant
    Filed: January 4, 2013
    Date of Patent: April 14, 2015
    Assignee: Triumph Actuation Systems—UK, Ltd.
    Inventors: Royston Evans, Malcolm Tierney