Patents by Inventor Jens Ennen

Jens Ennen 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).

  • Lateral boom locking and actuating unit
    Patent number: 6520359
    Abstract: A locking mechanism for telescoping sections, in particular for a mobile crane boom, includes a linearly shiftable locking bolt for connecting and releasing an inner telescoping section with respect to an outer telescoping section, said locking bolt being maintain ed biased in its extended position. The locking bolt is shifted by means of a rotary actuator from its extended position into its retracted position.
    Type: Grant
    Filed: May 8, 2001
    Date of Patent: February 18, 2003
    Assignee: Grove U.S. LLC
    Inventors: Frank Richter, Dieter Stuehrwoldt, Jens Ennen
  • Lateral boom locking and actuating unit
    Publication number: 20010052506
    Abstract: A locking mechanism for telescoping sections, in particular for a mobile crane boom, includes a linearly shiftable locking bolt for connecting and releasing an inner telescoping section with respect to an outer telescoping section, said locking bolt being maintained biased in its extended position. The locking bolt is shifted by means of a rotary actuator from its extended position into its retracted position.
    Type: Application
    Filed: May 8, 2001
    Publication date: December 20, 2001
    Inventors: Frank Richter, Dieter Stuehrwoldt, Jens Ennen