Patents by Inventor Ralf Hak

Ralf Hak 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).

  • Industrial truck with a jaw coupling, a system including an industrial truck and a trailer, and a method for coupling a trailer to an industrial truck
    Patent number: 12391079
    Abstract: An industrial truck (21) with a jaw coupling (1) that includes a coupling body (22) and a coupling pin (4), a system including such an industrial truck and a trailer (40), and a method for coupling the trailer to the industrial truck. The industrial truck includes a control unit (28), at least one locking sensor (17) and a locking actuator (8). The locking sensor is configured to recognize whether a coupling eye (26) of a drawbar (18) of a trailer is located in a locking position within the coupling body. The control unit is configured to receive and evaluate signals from the locking sensor and, when the locking sensor recognizes that the coupling eye is located in or near the locking position, the control unit is configured to control the locking actuator so that it actuates the coupling pin such that the coupling pin is shoved through the coupling eye.
    Type: Grant
    Filed: June 29, 2021
    Date of Patent: August 19, 2025
    Assignee: Jungheinrich AG
    Inventors: Ralf Hak, Jan Rieckmann, Hinrich Meyer, Gunnar Jahn, Konstantin Zizer, Joscha Bassanello
  • INDUSTRIAL TRUCK WITH A JAW COUPLING, A SYSTEM INCLUDING AN INDUSTRIAL TRUCK AND A TRAILER, AND A METHOD FOR COUPLING A TRAILER TO AN INDUSTRIAL TRUCK
    Publication number: 20220001708
    Abstract: An industrial truck (21) with a jaw coupling (1) that includes a coupling body (22) and a coupling pin (4), a system including such an industrial truck and a trailer (40), and a method for coupling the trailer to the industrial truck. The industrial truck includes a control unit (28), at least one locking sensor (17) and a locking actuator (8). The locking sensor is configured to recognize whether a coupling eye (26) of a drawbar (18) of a trailer is located in a locking position within the coupling body. The control unit is configured to receive and evaluate signals from the locking sensor and, when the locking sensor recognizes that the coupling eye is located in or near the locking position, the control unit is configured to control the locking actuator so that it actuates the coupling pin such that the coupling pin is shoved through the coupling eye.
    Type: Application
    Filed: June 29, 2021
    Publication date: January 6, 2022
    Inventors: Ralf HAK, Jan RIECKMANN, Hinrich MEYER, Gunnar JAHN, Konstantin ZIZER, Joscha BASSANELLO
  • Transport trailer with a chassis and at least one floor platform
    Patent number: 10683042
    Abstract: A transport trailer having a chassis and at least one floor platform mounting to the chassis and configured to transport a load. The at least one floor platform comprises at least one main plate and a metal sheet mounting to the main plate. The at least one main plate is fabricated from a porous metal material.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: June 16, 2020
    Assignee: Jungheinrich Aktiengesellschaft
    Inventors: Hauke Stockrahm, Ralf Hak, Jan-Christian Mensing
  • TRANSPORT TRAILER WITH A CHASSIS AND AT LEAST ONE FLOOR PLATFORM
    Publication number: 20180154949
    Abstract: A transport trailer having a chassis and at least one floor platform mounting to the chassis and configured to transport a load. The at least one floor platform comprises at least one main plate and a metal sheet mounting to the main plate. The at least one main plate is fabricated from a porous metal material.
    Type: Application
    Filed: November 22, 2017
    Publication date: June 7, 2018
    Applicant: Jungheinrich Aktiengesellschaft
    Inventors: Hauke Stockrahm, Ralf Hak, Jan-Christian Mensing