Patents by Inventor Nils Ehrentraut

Nils Ehrentraut 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).

  • Bolting device
    Patent number: 10717632
    Abstract: The invention relates to a bolting device having two bolts which are held rotationally secure and coupled to each other via a spindle element, wherein: a first bolt is connected via a threaded engagement to a corresponding thread of the spindle element; rotating the spindle element about its central longitudinal axis causes the first bolt to move along the longitudinal axis; and a second bolt is rotationally mounted on the spindle element in a fixed axial position. The invention also relates to a crane jib head comprising such a bolting device, for bolting a lattice masthead to a head adaptor.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: July 21, 2020
    Assignee: Manitowoc Crane Group France SAS
    Inventors: Nils Ehrentraut, Arthur Haag
  • Bolting Device
    Publication number: 20180244506
    Abstract: The invention relates to a bolting device having two bolts which are held rotationally secure and coupled to each other via a spindle element, wherein: a first bolt is connected via a threaded engagement to a corresponding thread of the spindle element; rotating the spindle element about its central longitudinal axis causes the first bolt to move along the longitudinal axis; and a second bolt is rotationally mounted on the spindle element in a fixed axial position. The invention also relates to a crane jib head comprising such a bolting device, for bolting a lattice masthead to a head adaptor.
    Type: Application
    Filed: January 24, 2018
    Publication date: August 30, 2018
    Inventors: Nils Ehrentraut, Arthur Haag