Patents by Inventor Uwe Leitloff

Uwe Leitloff 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).

  • Patent number: 10988220
    Abstract: A cover device for at least partially closing an underwater opening in a hull of a watercraft includes a variable-volume hollow-chamber lip assembly including at least two hollow-chamber lips and one buoyancy body. The at least one hollow-chamber lip is volume-variable by supplying a fluid to or removing a fluid from an interior thereof, and the at least one hollow-chamber lip assembly is shiftable between an expanded state and a contracted state by supplying or removing the fluid.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: April 27, 2021
    Assignee: SKF MARINE GMBH
    Inventors: Holger Spardel, Frank Albrecht, Ulrich Albrecht, Kai Danneberg, Uwe Leitloff
  • Publication number: 20200130796
    Abstract: A cover device for at least partially closing an underwater opening in a hull of a watercraft includes a variable-volume hollow-chamber lip assembly including at least two hollow-chamber lips and one buoyancy body. The at least one hollow-chamber lip is volume-variable by supplying a fluid to or removing a fluid from an interior thereof, and the at least one hollow-chamber lip assembly is shiftable between an expanded state and a contracted state by supplying or removing the fluid.
    Type: Application
    Filed: April 27, 2018
    Publication date: April 30, 2020
    Inventors: Holger SPARDEL, Frank ALBRECHT, Ulrich ALBRECHT, Kai DANNEBERG, Uwe LEITLOFF
  • Patent number: 10421522
    Abstract: The invention relates to a cover device for at least sectional closing of an underwater opening in a hull of a watercraft, in particular an opening of a transverse channel of a thruster. According to the invention the cover device includes at least one variable-volume hollow chamber lip including at least one buoyancy body, and the at least one hollow chamber lip is shiftable into an expansion state or into a shrinkage state by supplying or removing a fluid, in particular air. As a result of the variable-volume or inflatable cover device a more reliable and simultaneously lower-maintenance operation of the cover device is given. In addition, the invention has a thruster, in particular a bow or stern-thruster, as subject matter.
    Type: Grant
    Filed: October 18, 2016
    Date of Patent: September 24, 2019
    Assignee: SKF Marine GmbH
    Inventors: Michael Zollenkopf, Frank Albrecht, Ulrich Albrecht, Kai Danneberg, Uwe Leitloff, Thomas Siebrecht, Holger Spardel
  • Patent number: 10220923
    Abstract: A fin stabilizer for stabilizing watercraft includes a pivotable stabilizer fin and a receiving space for receiving the stabilizer fin. The stabilizer fin is shiftable from a retracted state in which the stabilizer fin is received in the receiving space to an extended state in which the stabilizer fin extends from the receiving space. Also at least one flexible cover element for at least partially covering an opening of the receiving space, through which opening the stabilizer fin enters and exits the receiving space during retracting and extending, respectively. The stabilizer fin does not contact the at least one cover element when shifting from the retracted state to the extended state.
    Type: Grant
    Filed: October 22, 2015
    Date of Patent: March 5, 2019
    Assignee: SKF Marine GmbH
    Inventors: Kai Danneberg, Michael Zollenkopf, Frank Albrecht, Ulrich Albrecht, Uwe Leitloff, Thomas Siebrecht, Holger Spardel
  • Publication number: 20180312223
    Abstract: The invention relates to a cover device for at least sectional closing of an underwater opening in a hull of a watercraft, in particular an opening of a transverse channel of a thruster. According to the invention the cover device includes at least one variable-volume hollow chamber lip including at least one buoyancy body, and the at least one hollow chamber lip is shiftable into an expansion state or into a shrinkage state by supplying or removing a fluid, in particular air. As a result of the variable-volume or inflatable cover device a more reliable and simultaneously lower-maintenance operation of the cover device is given. In addition, the invention has a thruster, in particular a bow or stern-thruster, as subject matter.
    Type: Application
    Filed: October 18, 2016
    Publication date: November 1, 2018
    Inventors: Michael Zollenkopf, Frank Albrecht, Ulrich Albrecht, Kai Danneberg, Uwe Leitloff, Thomas Siebrecht, Holger Spardel
  • Publication number: 20170247090
    Abstract: A fin stabilizer for stabilizing watercraft includes a pivotable stabilizer fin and a receiving space for receiving the stabilizer fin. The stabilizer fin is shiftable from a retracted state in which the stabilizer fin is received in the receiving space to an extended state in which the stabilizer fin extends from the receiving space. Also at least one flexible cover element for at least partially covering an opening of the receiving space, through which opening the stabilizer fin enters and exits the receiving space during retracting and extending, respectively. The stabilizer fin does not contact the at least one over element when shifting from the retracted state to the extended state.
    Type: Application
    Filed: October 22, 2015
    Publication date: August 31, 2017
    Inventors: Kai Danneberg, Michael Zollenkopf, Frank Albrecht, Ulrich Albrecht, Uwe Leitloff, Thomas Siebrecht, Holger Spardel
  • Patent number: 5105691
    Abstract: An under-the-floor lathe for re-machining the wheels in railroad-vehicle wheel sets. It has two assemblies for each wheel in the set. Each assembly comprises an upright, a swiveling head, an axle-bearing support, a hold-down, two friction rollers that can be positioned against one of the wheels, and a friction-roller holder. At least one of the friction rollers in each holder is powered. Each holder rotates around an axis that travels along the mid-plane of the lathe. The object is to accelerate the machining action without using brakes that engage the friction-roller holders. Two pressure-application devices that generate opposite torques in relation to their associated pivoting axis are attached to each friction-roller holder.
    Type: Grant
    Filed: February 27, 1991
    Date of Patent: April 21, 1992
    Assignee: Hoesch Maschinenfabrik Deutschland AG
    Inventors: Dirk Brinkmann, Uwe Leitloff