Patents by Inventor Robert E. Stack

Robert E. Stack 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).

  • Tension measurement system and method
    Patent number: 7373837
    Abstract: Tension within a power transfer system is measured by tension evaluator that includes an actuator, a first sensor, and a second sensor. The actuator applies a first load and a second load to a chain. The chain is moved a first amount of deflection in response to the first load and the chain is moved a second amount of deflection in response to the second load. The first sensor senses an event. A third amount of deflection is associated with the event. The second sensor senses an amount of travel of the chain between the second amount of deflection and the third amount of deflection.
    Type: Grant
    Filed: March 16, 2004
    Date of Patent: May 20, 2008
    Assignee: The Boeing Company
    Inventors: David G. Ellsworth, Robert E. Stack, Scot D. Fisher